Evening star., 1919-04-20
THE EXPERTS SAY.

It frequently happens that a screw
is SO located that lock nut, cotter
pin or the usual devices cannot be
used to hold it. BY cutting short
length of iron wire. bending it lit
tie and then. after the screw has been
sunk under the surface. driving the
wire in so that it lies in the slot, the
screw will be firmly held in place.
In inspecting the springs attention
should be given to the spring hanE-
ers and other subsidiary parts. LOST
motion, usually side play. often de.
i shackles. Not infreQuently the bolts
which pass through the spring eye
will be worn nearly through in the
course of a seasons active running.
Many cars have no lubricating equip
ment for these small parts and tney
wear out rapidly under the stresses
| of travel
| A socket wrench may be made for
! any special job by taking a piece OF
| pipe about the same size as the nut
: to be operated on. heating 1t ana
hammering the end to At the nut.
After this improvised tool has oesn
cooled in water. it makes wholly
! tion with a pipe wrench. or holes
| may be drilled for rod to be used
i as a handle.
! In preparing a drill to be used on
ITO: an even red heat. the scale. re-
moved and the tip of the drill be
touched to a drop of quicksilver and
then be quenched in water. A1ter
this treatment the driH viii go
trouble. A simple method of tenn.
pering small tools quickly is to heat
! them red hot and then thrust them
/ into a potato. after which they should
! be drawn to the correct temper to re-
move brittleness.
The modern car when properly ad-
! justed is a remarkably quiet running
piece Of mechanism. Unusual noise is
| certain indication Of trouble-em-
! trouble. The wise owner will not
/ disregar this certain indication of
| something wrong. but will al once
| trace the noise and remedy the basic
! cause of which 1t is merely symp~
tom. There is no need of giving this
advice to the veteran driver, because
he has learned It by experience, but
at this time. when there are many
new hands at new steering wheels.
it may be permissible to call attention
to the fact that noise means trouble
) in the cars mechanism.
When a clutch starts slipping badly
it is useless to race the engine In the
hope that the car will move faster.
Rather operate the engine slowly
with slight change in speed. in order
to give the fywheel a chance to carry
the clutch around with 1t. Racing the
engine when you have a slipping
clutch only makes a bad matter
worse, for the clutch cannot hold at
the high speed and there is a chance
of burning it up altogether.
proper cylinder should be brought TO
! firing position. both valves closed
and the piston at the top of its stroke.
/ This may be ascertained by running
a stout wire through a spark plug or
] petcock opening or bv looking at the
| valves and tappets. When the piston
! is in this position the motor must be
! backed one-eighth of Il stroke. at which
position the spark should occur when
the lever is fully advanced. The mag
i neto intcrrupter should be just. about
/ to omen and the distributor arm on
! the segment corresponding to the cyl1
/, inder, whose valves are both closed.
; To tighten loose wrist pin BUSH
ing when it is located in the con-
| Meeting rod. take piece of tubing
that will just slip over the bush
| ing on one side Of the connecting
| rod. Next get a piece of metal a lit
| tie smaller than the bushing >to put
against it, Put these in wise and
! press the bushing out. Now give the
| bushing about a quarter turn and
| thrust 1t back in the connecting rod
! and you will find the piston pin tight
+, enough tu' run for some tin,e before
! It will be necessary TO renew the
bushinEs. 4-lsss, -,