Abstract:
A tool for inserting and fastening a replacement injector sleeve in the cylinder head of a diesel engine. The tool is part of an injector sleeve tool kit which also includes an injector sleeve removal tool. The installation tool includes an expandable mandril which is inserted into the injector sleeve and expands a portion of the sleeve causing a press fit of the sleeve within the cylinder head. The sleeve removal tool includes a tap having a longitudinal body and a threaded cutting head at one end and a bolt having a head at the other end. An extraction nut is threaded onto the threaded shaft of the drive member followed by a bearing surface member such as a spacer. A hollow cylinder or support sleeve having an internal diameter greater than the injector sleeve to be removed and an external diameter less than the diameter of the sleeve bore includes a shoulder member.

Description:
RELATED APPLICATIONS 
       [0001]    This application claims priority from and is a continuation in part of U.S. application Ser. No. 13/987,420 filed on Jul. 23, 2013 and U.S. Provisional Patent application Ser. No. 61/854,847 filed on May 2, 2013 both of which are incorporated by reference herein in their entirety. 
     
    
     TECHNICAL FIELD 
       [0002]    The present invention relates to the field tools used to install and remove a typically brass or bronze injector sleeve from a cylinder head in a diesel engine. These sleeves are press fit into a bore in the head. After years of use the sleeves will loosen or begin to leak and need to be replaced. 
       BACKGROUND OF THE INVENTION 
       [0003]    An injector sleeve removal tool is described in Applicant&#39;s U.S. Pat. No. 8,490,263 which issued on Jul. 23, 2013. 
         [0004]    Tools for the removal of injector sleeves have been described and patented in recent years. U.S. Pat. No. 5,784,783 by Carpenter for METHOD OF REMOVING AN INJECTOR SLEEVE issued on Jul. 28, 1998 claims a tool wherein one inserts rounded head into the sleeve. A cylinder with a reverse tapered edge is forced down onto the top edge of the sleeve. This flairs the top edge inward, thus capturing the rounded head within the sleeve. The rounded head is pulled up and the intent is that the flair will hold tight to the rounded head and the sleeve will be pulled out with the tool. This design has some inherent flaws. First, the flaring process forces the sleeve into the head even tighter than it would initially be. Second, if the sleeve is tight, as one would expect, the flair is likely to weaken and pull apart, whereupon, the rounded head comes out but the sleeve has been seated even tighter. 
         [0005]    U.S. Pat. No. 5,090,102 by Lovell for DIESEL INJECTOR SLEEVE REMOVER issued on Feb. 25, 1992 claims a hollow, externally threaded tube which has been slit down one side. A rod is inserted in the tube which is conical at the bottom end. The rod sticks out of the slitted threaded end of the tube and the large end of the rod is a little larger than the threaded tube. The top end of the rod is connected to a slide hammer. The threaded sleeve is inserted into the sleeve. One tap of the hammer seats the threads of the tube into the bore of the sleeve because tapping the hammer down against the top of the sleeve forces the sleeve down onto the conical end of the rod and this causes the threaded tube to expand, thus forcing the threads to grab into the bore of the sleeve. Now the slide hammer is pulled up to drive the assembly out along with the sleeve. The primary weakness of this design presents itself in the case where the sleeve is very tightly held within the cylinder head. The threads won&#39;t have a strong enough hold and will simply chew and pull material out of the sleeve but leave the sleeve in place in the head. 
       SUMMARY OF THE INVENTION 
       [0006]    An injector sleeve is used to seal each of the cavities in the top of a cylinder head or heads of a diesel. The sleeve maintains a clean environment within the cylinder head cavity by keeping external debris outside. The sleeve is generally made of brass or bronze and is sized to be pressed into the cavity. If the sleeve fails, leaks can occur and the sleeve must be replaced. This can require removal of the cylinder head, which is costly in terms of time and money. A huge savings is realized if the sleeve or sleeves can be removed without the removal of the cylinder head. The present invention is a tool which makes sleeve removal possible without removing the cylinder head. 
         [0007]    A sleeve installation tool is disclosed herein which is used to fasten an injector sleeve within a diesel cylinder head. Further, a sleeve removal tool is disclosed herein used for removing an injector sleeve from the cylinder head of a diesel engine without the extra labor and cost of removing the entire head from the diesel engine. 
         [0008]    One common type of injector sleeve is configured to be press fit into a diesel cylinder head. This type of sleeve is sized a few thousandths of an inch larger than the holes into which they are to be pressed. A simple punch shaped to fit the inside of the sleeve shell is used to force the sleeve into the cylinder head. The sleeve is set at the entrance of the cylinder head with the punch inserted therein. A hammer is then used to drive the sleeve home in the cylinder head. 
         [0009]    However, a second type of injector sleeve is configured so that the sleeve freely goes into the hole in the cylinder head. Once there, a sleeve expanding tool is used to expand a portion of the sleeve to tightly fix the sleeve within the cylinder. This sleeve expanding tool is the part of the injector sleeve kit of this application. 
       The Injector Sleeve Removal Tool 
       [0010]    A injector sleeve removal tool is disclosed herein and is used for removing an injector sleeve from the cylinder head of a diesel engine between the rocker arms while the head remains mounted to the engine block within the vehicle. The devices includes a tap having a longitudinal body having a threaded cutting head at one end and an axial threaded bore at the opposing end. A drive member comprises a bolt having a head at one distal end and a threaded shaft body portion. An extraction nut is threaded onto the threaded shaft of the drive member followed by a bearing surface member such as a spacer. A washer bearing surface member having an axial hole sized for movable engagement on the threaded shaft is disposed on the threaded shaft after the spacer. A hollow cylinder or support sleeve having an internal diameter greater than the injector sleeve to be removed and an external diameter less than the diameter of the sleeve bore includes a shoulder member projecting outwardly from the exterior of the support sleeve at a selected point. Moreover, a washer bearing surface member having a center hole is disposed onto the threaded end of a bolt having a holding nut threaded thereon spaced apart a selected distance from the threaded distal end. The threaded distal end of the bolt is inserted into and threadably engages threads of the tap nut so that the bolt is fastened to the tap. The end of the injector sleeve removal tool defining the tap assembly is passed through a hollow cylinder of a selected diameter sized so that the end edges of the tube rest on the surface of the cylinder head surrounding the injector sleeve to be removed. The washer bearing surface member is selected having an outer diameter large enough to provide a bottom surface for resting on the top edge of the hollow cylinder. The holding nut rests upon the top surface of the washer bearing surface member above the hollow cylinder. The head of the bolt opposite the tap assembly is rotated with a tool, whereby the distal end having the tap assembly turns to cut threads into the interior surface of the injector sleeve securing same. The head of the bolt is held in a stationary position and the holding nut is then turned and moved downwardly biasing the bottom surface of the washer bearing surface member against the top edges of the hollow cylinder pulling the injector sleeve upward and out of the cylinder head in order that a replacement injector sleeve can be pressed into place in the cylinder head. 
         [0011]    The injector sleeve removal tool is described and can be fabricated by the following method. A thread cutting device commonly known as a tap is modified by attaching a threaded nut to the non-threaded end. This allows a bolt to be threaded into the nut and therefore fastened to the tap. A loose nut and a flat washer bearing surface member are put onto the bolt (in that order) before threading the bolt into the nut which was welded onto the end of the tap. This assembly is passed through a hollow cylinder sized to sit on the edge of the cylinder head just surrounding the injector sleeve to be removed. The flat washer bearing surface member is large enough so that the washer won&#39;t pass through but rests on the top edge of the hollow cylinder. The bolt (with the tap) is now used to cut 2 or three turns of threads into the injector sleeve. Now, the loose nut is tightened to gently and evenly withdraw the bolt assembly and the injector sleeve. 
         [0012]    Alternative embodiments may have the bolt welded directly to the tap, or even simultaneously cast as one piece or any other stable method of attachment. Also, the flat washer bearing surface member and cylinder may be welded together or otherwise attached or fabricated together as one would make a can or pan. 
         [0013]    Experience has shown that two or three turns of thread into the sleeve are sufficient to pull the sleeve. One superior aspect of this design is that one can turn in more threads if required. Also, the pulling method is the even, central and straight thrust provided when the loose nut is tightened against the flat washer bearing surface member. This is believed to be more stable and powerful than that of tools that use the uneven strikes of a slide hammer. 
         [0014]    A major feature of the sleeve removal tool is that the sleeves are removed without having to remove the engine from the vehicle, saving time, labor, expense, and increasing safety. 
       The Injector Sleeve Installation Tool 
       [0015]    As discussed above, one type of injector sleeve is configured to easily slip into place within the cylinder head and must then be fastened tightly in place. A sleeve installation tool is used to expand a portion of the sleeve to tightly fix the sleeve within the cylinder. The injector sleeve is a hollow brass or bronze shell which is roughly cylindrical with two open ends. The cylinder is roughly tapered in steps with the opening at the large end being larger than the opening at the small end. The installation tool is a two part roughly cylindrical mandrel which is longer than the injector sleeve. The first part of the mandrel is an outer shell. The distal end of the outer shell of the mandrel is divided into axially parallel sections that can spread apart and thus expand the diameter of the shell. The second part of the mandrel is a rod with external threads and a bolt head at one end and which is tapered in selected positions down the length of the rod. When the rod is forced down into the outer shell, the sections of the outer shell expand radially outward. The end of the outer shell which is opposite of the end with the expanding sections has internal threads. The tapered end of the rod is inserted into the interior threaded end. The rod further pushed into the outer shell until the external threads of the rod can be threaded into the internal threads of the outer shell. Thus, as the rod is pulled into the outer shell by twisting the bolt head, the tapered sections of the rod cause the expandable section of the outer shell to extend and expand radially outward. With the expandable sections of the outer shell inserted into the injector sleeve, the sleeve is also expanded, thus resulting in a press fit of the sleeve within the cylinder head. 
       The Injector Sleeve Kit 
       [0016]    An injector sleeve kit includes the two tools described above: an injector sleeve removal tool and an injector sleeve installation kit. 
         [0017]    Other objects, features, and advantages of the invention will be apparent with the following detailed description taken in conjunction with the accompanying drawings showing a preferred embodiment of the invention and appended claims. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0018]    A better understanding of the present invention will be had upon reference to the following description in conjunction with the accompanying drawings in which like numerals refer to like parts throughout the views wherein: 
           [0019]      FIG. 1  is an oblique view of the injector sleeve removal tool assembly inserted into an injector sleeve which is press fitted into a cylinder head; 
           [0020]      FIG. 2  is another embodiment of the injector sleeve removal tool. 
           [0021]      FIG. 3  is yet another embodiment of the injector sleeve removal tool. 
           [0022]      FIG. 4  is still another embodiment of the injector sleeve removal tool. 
           [0023]      FIG. 5  is a perspective view showing an embodiment of the sleeve removal tool assembly; 
           [0024]      FIG. 6  is a perspective view showing an embodiment of the sleeve removal tool assembly; 
           [0025]      FIG. 7  is a perspective view showing an embodiment of the sleeve removal tool assembly; 
           [0026]      FIG. 8  is a perspective view showing an embodiment of the sleeve removal tool assembly; 
           [0027]      FIG. 9  is a perspective view of one type of simple injector insertion tool; 
           [0028]      FIG. 10  is an exploded view of an injector sleeve removal tool showing the tap and threaded cutting head, the drive member for engaging the tap, the extraction nut, the bearing surface member, and cylindrical alignment member; 
           [0029]      FIG. 11  is a perspective view of the injector sleeve removal tool of  FIG. 10 ; 
           [0030]      FIG. 12  is a perspective view of the injector sleeve of  FIGS. 10 and 11  including a positioning cylinder; 
           [0031]      FIG. 13  is another perspective view of the injector sleeve of  FIGS. 10 and 11  including a positioning cylinder; 
           [0032]      FIG. 14  is another perspective view of the injector sleeve of  FIGS. 10 and 11  including a positioning cylinder drawn in phantom lines; 
           [0033]      FIG. 15  is a perspective cutaway view of the sleeve removal tool being used; 
           [0034]      FIG. 16  is a perspective side view of an injector sleeve; 
           [0035]      FIG. 17  is a perspective view of the top opening of the injector sleeve; 
           [0036]      FIG. 18  is a perspective side view of the shell portion of the injector sleeve installation tool; 
           [0037]      FIG. 19  is a perspective side view of the expander rod portion of the injector sleeve installation tool; 
           [0038]      FIG. 20  is a perspective side view of the shell portion of the injector sleeve installation tool showing the top opening; 
           [0039]      FIG. 21  is a perspective end view of the shell portion of the injector sleeve installation tool; 
           [0040]      FIG. 22  is another perspective side view of the shell portion of the injector sleeve installation tool; and 
           [0041]      FIG. 23  is a perspective inside view of the shell portion of the injector sleeve installation tool through the top opening. 
           [0042]      FIG. 24  is a cross sectional view of the installation tool. 
           [0043]      FIG. 25  is a sectional view showing the expander rod disposed within the shell which is inserted into the opening of an injector sleeve or cup; 
           [0044]      FIG. 26  is a perspective view of the expander rod and shell. 
       
    
    
     DESCRIPTION OF THE PREFERRED EMBODIMENTS 
       [0045]    In accordance with the present invention, a tool is disclosed herein used for removing an injector sleeve from the cylinder head of a diesel engine without the extra labor and cost of removing the entire head from the diesel engine. 
         [0046]      FIGS. 1-4  show the assembled tool  8  for removing an injector sleeve along with a potion of a cylinder head and described as follows. An axially movable threaded rotating extraction nut  15  is threaded onto a bolt  10  having a head  12  defining a holding means extending from a shaft having threads  16  at least along the distal end opposite the head  12 . In the embodiment of  FIG. 1 , about one and one half inches of the threads  16  of bolt  10  extend through rotating non-ratcheting. 
         [0047]    As seen in  FIG. 11 , tap  51  is rigidly attached to the bolt  10 . The opposing distal end  52  of the tap  51  comprises a generally cylindrical threaded cutting head end portion  54  including threads which extend coaxially in a horizontal plane rather than an inclined plane such as typical of a screw. Moreover, the threads extend circumferentially around the end portion  54  in a discontinuous manner forming a plurality of smooth parabolic axial grooves  57  disposed between axial threaded sections  58 . In at least one preferred embodiment, the six grooves are disposed between six threaded sections defining a cross sectional hexagon shape. Of course it is contemplated that the threads could be arranged in an inclined plane to bite into the inner wall of the sleeve  80 . 
         [0048]    A washer load bearing surface member  20 , is disposed between the rotating nut  15  and a hollow sleeve or cylinder  30  which has a large enough inner diameter for tap  51  to rotatably move therein and for the injector sleeve  80  to easily slide up and the cylinder  30 . The length of cylinder  30  must be longer than the tap  51  and the available threads left on the bolt  10  after the tool  8  is assembled with the rotating extraction nut  15 , washer bearing surface member  20  and stationary nut  40 . Enough threads  57  must be exposed to reach into and cut at least three threads into the interior side wall of an injector sleeve  80 . The washer bearing surface member  20  can be of a selected thickness but must include a center hole (not shown) large enough to allow axial movement along the bolt  10 . The diameter of the washer bearing surface member  20  must be at least large enough to engage the top end edge of the cylinder  60 . 
         [0049]    As shown in  FIG. 1 , the end  152  of the cylinder  130  rests in the cylinder head  60  and more particularly within a conical depression or seat  34  formed around the injector bore of the cylinder head  60 . 
         [0050]    As shown in  FIG. 2 , an annular or circumferential taper stop means  154  is formed by the cylinder  30  whereby the taper  154  contacts the cylinder head  60  of the engine limiting penetration of the cylinder  30  therein. 
         [0051]      FIG. 3  shows an optional stop mean  154  comprising a washer  20  used to limit penetration of the nut  15  into the cylinder head  60 . 
         [0052]      FIGS. 5-8  and  10 - 12  show an alternate embodiment of the assembled tool  150  for removing an injector sleeve described as follows. An axially movable threaded drive member including external holding means comprises a rotating extraction nut  15  is threaded onto a bolt  10  having a head  12  defining a holding means extending from a shaft  14  having threads  16  at least along the distal end thereof opposite the head  12 . In the embodiment of  FIG. 1 , about one and one half inches of the threads  16  of bolt  10  extend through rotating extraction nut  15 . 
         [0053]    A tap  150  threadably engages threads  16  of the bolt  10  and is immovably held in a selected position by a set screw  51  threadably engaging a threaded hole  53  formed in the non-threaded upper portion  155  of the tap  150 . The set screw provides a removable an adjustable means for threadably engaging the bolt  10 . Of course, as described heretofore and shown in  FIGS. 1-4 , a stationary nut  40  could be used as an alternate means for adjustably and removably attaching the tap  150  to the bolt  10  wherein the stationary nut  40  or other means could be attached by welding or casting onto a non-threaded distal end (not shown) of the tap  150 . The opposing distal threaded end  52  of the tap  150  comprises a generally cylindrical threaded cutting head end portion  54  including threads  56  which extend coaxially in a horizontal plane rather than an inclined plane such as typical of a screw. Moreover, the threads  56  extend circumferentially around the end portion  54  in a discontinuous manner forming a plurality of smooth parabolic axial grooves  57  disposed between axial threaded sections  58 . In at least one preferred embodiment, the six grooves are disposed between six threaded sections defining a cross sectional hexagon shape. 
         [0054]    A washer bearing surface member  120  as shown in  FIGS. 5-8  and  10 - 12  is disposed between the rotating extraction nut  15  and a hollow sleeve or cylinder  130  which has a large enough inner diameter for the tap  150  to rotatably move therein and for the injector sleeve  80  to easily slide up and into. The length of cylinder  130  must be longer than the tap  150  and stationary holding means and the available threads left on the bolt after the tool  8  is assembled with the rotating extraction nut  15 , washer bearing surface member  120  and means for holding  155 . Enough threads  57  must be exposed to reach into and cut at least three threads into the interior side wall of an injector sleeve  80 . The washer bearing surface member  120  can be of a selected thickness but must include a center hole  121  large enough to allow axial movement along the bolt shaft  14 . The diameter of the washer bearing surface member  120  must be at least large enough to engage the top end edge of the cylinder  30 . As shown in  FIG. 10 , the washer bearing surface member  120  comprises a single thick washer which bears against the cylinder head  60  of the engine or as shown in  FIG. 11  against the sleeve or cylinder  130  in order to remove the injector sleeve  80 . 
         [0055]      FIG. 10  is an exploded view of an injector sleeve removal tool  149  showing the tap  150  having a longitudinal body, a threaded cutting head  54  at one end and an axial threaded bore  59  at the opposing end. The drive member  7  comprises a bolt having a head  12  at one distal end and a threaded shaft body portion  16  cooperatively engaging the axial threaded bore of the tap  40 . An extraction nut  15  threadably engages the threaded shaft  16  of the drive member  7 . A washer bearing member  120  sized for movable engagement on the threaded shaft  16  is disposed between the extraction nut  15  and cutting head  54 . A cylindrical alignment means defining a coaxial bushing  132  is affixed to the tap  40  between the bearing surface member  120  and the cutting head  54 .  FIG. 11  shows the assembled injector sleeve removal tool assembly  149 .  FIG. 12  shows the assembly of  FIG. 11  including a cylinder or sleeve  130  for engaging the bearing member  120  and providing means for positioning and/or aligning and/or limiting penetration of the tap  40  and cutting head  54  in the cylinder head  60 . 
       Method of use of Injector Sleeve Removal Tool 
       [0056]    To use the tool, cylinder  30  is placed into the injector cavity against the cylinder head  60  so that the cylinder  30  straddles the injector sleeve  80 . Now the bolt-tap-washer assembly is passed through the cylinder  30  and is urged and turned clockwise into the upper portion of the inner sleeve wall  70  of the sleeve  80  cutting threads into the inner wall of the sleeve  80 . After at least one turn and preferably at two or three turns, threads are cut into the inner sleeve wall  70  sleeve, one holds the bolt head with one wrench while turning the extraction nut  15  clockwise with another wrench until the sleeve is withdrawn from the cylinder head and is loose. The area surrounding the injector sleeve  80  comprises a hollow portion  90  of the cylinder. 
         [0057]    More particularly, the tool shown in  FIGS. 1-8  and  13  is used for removing an injector sleeve  80  from the cylinder head  60  of a diesel engine while the head remains mounted to the engine block. A thread cutting device defining a tap  51 , is modified by attaching a threaded tap nut  15  to the threaded distal end. A washer bearing surface member  20 , having a center hole is disposed onto the threaded end of a bolt having a holding nut threaded thereon spaced apart a selected distance from the threaded distal end. The threaded distal end of the bolt is inserted into and threadably engages threads of the tap  51 , so that the bolt is fastened to the tap. 
         [0058]    As shown in  FIG. 1 , the end  31  of the cylinder  30  rests on the cylinder head  60  and more particularly within a conical depression or seat  34  formed around the injector bore  36  of the cylinder head  60  which serves as an alignment, positioning, and support means of the cutting head and tap for pulling the injector sleeve  80 . 
         [0059]    As shown in  FIG. 2 , a circumferential ring  35  formed around the cylinder  30  rests on the surface of the cylinder head  60  and supports the end  31  of the cylinder  30  within a conical depression above the surface of the seat  34  formed around the injector bore  36  of the cylinder head  60  wherein the cylinder  30  provides means of aligning, positioning, and supporting the cutting head  54  of the tap  51 . 
         [0060]    As shown in  FIG. 3 , bolts  33  extending from around the cylinder  30  rests on the surface of the cylinder head and supports the end  31  of the cylinder  30  within a conical depression above the surface of the seat  34  formed around the injector bore  36  of the cylinder head  60  wherein the cylinder  30  provides means of aligning, positioning, and supporting the cutting head  54  of the tap  51 . 
         [0061]    As shown in  FIG. 4 , pins  37  extending circumferentially around the cylinder  30  rests on the surface of the cylinder head  60  and supports the end  31  of the cylinder  30  within a conical depression above the surface of the seat  34  formed around the injector bore  36  of the cylinder head  60  wherein the cylinder  30  provides means of aligning, positioning, and supporting the cutting head  54  of the tap  51 . 
         [0062]    As shown in  FIGS. 5-8 , the end  131  of the cylinder  130  can rest on the surface of the cylinder head  60  or within a conical depression or seat  34  formed around the injector bore  36  of the cylinder head  60  and serve as an alignment, positioning, and support means for the cutting head and tap for pulling the injector sleeve  80 . Furthermore, the cylinder  30  is formed having a bottom portion  41  having a smaller diameter than a top portion  43  with the intersection forming a circumferential lip  42  which may rest upon the cylinder head  60  and be used to provide a support means to pull the injector sleeve  80 . 
         [0063]    The injector sleeve removal tool shown in  FIGS. 11-13 , shows the bearing surface member  120  providing a support means which can rest upon the cylinder head  60  and a tap  150  including an optional coaxial bushing  132  for alignment disposed between the cutting head  54  and the bearing surface member  120 . The bushing  132  is not needed to exert pressure on the cylinder head, but merely acts as a guide member. 
         [0064]    The end of the injector sleeve removal tool defining the tap assembly is passed through a hollow cylinder  30 ,  130  of a selected diameter. The washer bearing surface member  120  is selected having an outer diameter large enough to provide a bottom surface for resting on the top edge of the hollow cylinder  30 ,  130 . The extraction nut  15  rests upon the top surface of the washer bearing surface member above the hollow cylinder  30 ,  130 . The drive member  7  head  12  of the bolt opposite the tap  51 ,  150  assembly is rotated with a tool, whereby the distal end having the tap assembly turns to cut threads into the interior surface of the injector sleeve  80  securing same. The drive member  7  head of the bolt is held in a stationary position and the holding extraction nut  15  is then turned and moved downwardly biasing the bottom surface of the washer bearing surface member  120  against the top edges of the hollow cylinder  30 ,  130  pulling the injector sleeve  80  upward and out of the cylinder head  60  in order that a replacement injector sleeve can be pressed into place in the cylinder head. 
         [0065]    The sequential steps are as follows:
   1. Remove the valve cover. (est. 30 minutes)   2. Disconnect the fuel injector electrical connector.   3. Remove the internal oil, drain plugs in the cylinder head.   4. Remove the outboard fuel injector retaining bold which holds the injector.   5. Remove the fuel injector with a little light pressure.   6. Place the injector sleeve remover (THE WRENCH) in the injector bore.   7. Manually turn the injector tool (WRENCH) CLOCKWISE 5-6 turns (until the tap is tight into the injector sleeve.   8. Tighten shoulder bolt on the wrench CLOCKWISE downward until the sleeve is removed.   9. Then put the wrench into a vice and turn the wrench COUNTERCLOCKWISE until the sleeve is released from the wrench.   10. Put the new sleeve into the injector bore.   11. Insert the Driver Tool into the new sleeve that is residing in the injector bore then tap the DRIVER TOOL with a normal hammer until the sleeve fits tightly into injector bore.   12. Reconnect the outboard fuel injector retaining bold which holds the injector.   13. Reconnect the internal oil rail, drain plugs in the cylinder head.   14. Reconnect the fuel injector electrical connector.   15. Restore the Valve cover. One side is finished.   
 
       The Injector Sleeve Installation Tool 
       [0081]    Shown in  FIGS. 18-24 , the injector sleeve installation tool  230  comprises two parts, an outer shell  220  and an shell expander rod  240 . The outer shell  220  has a tapered end  232  which includes five parallel fingers  224  running down half of the length of the outer shell  220  and forming the circumference of the tapered end  232 . The five fingers  224  are separated by five parallel slots  222 . The slots  222  first terminate at the tapered end  232 . At the second end of the slots  222 , a hole is drilled to prevent cracking and breaking of the fingers  224 . 
         [0082]    At the open end of the outer shell  220  is an aperture through which the tapered end  252  of the expander rod is inserted. The outer shell includes an interior cavity which is approximately the same size and shape as the expander rod  240 . The rod  240  includes a hexagonally shaped head  242  at the end opposite of the tapered end  252 . Just below the hex head  242 , the rod has external threads  244  which engage internal threads  243  within the outer shell  220 . As the expander rod  240  is threaded into the outer shell  220 , the five fingers  224  are urged radially outward. 
         [0083]    An injector sleeve  202  shown, in  FIGS. 16 and 17  includes an open conical tip  208 , cylindrical middle body portion  204 , and open larger diameter cylindrical upper body portion  210  sized to easily slide into a bore within the diesel cylinder head. Because the sleeve slides easily in and out of the cylinder head, once the sleeve  202  is in the head, the sleeve must be expanded to fixedly hold the sleeve in place. To accomplish this expanding of the sleeve, the tapered end  232  of the outer shell  220  of the sleeve installation tool  230  is fully inserted into the larger end  210  of the sleeve  202 . With the outer shell  220  fully inserted into the sleeve  202 , the hex head of the expander rod  240  is turned clockwise while holding the hex head  225  of the outer shell  220  stationary, thus causing the fingers  224  to spread radially outward and causing expansion of the sleeve  202 . Because the outer shell  220  is fully inserted into the injector sleeve  202 , the external annular ribs  231  and  228  are positioned within the sleeve  202  so that the sleeve is expanded at desired positions which will lock the sleeve  202  in the cylinder head. After expanding the sleeve  202 , the hex head  242  is turned counter clockwise with respect to the hex head  225  to retract the fingers  224  to a relaxed and un-expanded state. Now the tool  230  is withdrawn from the sleeve. 
         [0084]    It is anticipated that other sleeves of different lengths and configurations require expansion tools of different configurations wherein annular rib portions such as  228  and  231  are located in key positions to cause expansion of other sleeves in areas which cause the sleeve to be locked in place in cylinder heads suited to these sleeves. 
         [0085]    Whereas the installation tool described herein has five expansion fingers  224 , it is anticipated that a other embodiment have three to eight or more expansion fingers. 
       The Injector Sleeve Kit 
       [0086]    The injector sleeve kit includes the sleeve removal tool  8  and the sleeve installation tool  230 . 
         [0087]    The foregoing detailed description is given primarily for clearness of understanding and no unnecessary limitations are to be understood therefrom, for modification will become obvious to those skilled in the art upon reading this disclosure and may be made upon departing from the spirit of the invention and scope of the appended claims. Accordingly, this invention is not intended to be limited by the specific exemplification presented herein above. Rather, what is intended to be covered is within the spirit and scope of the appended claims.