3532 T406 A/s wiper unable to sweep Only ~~~~~ 3532 T406 A/s wiper unable to sweep Only when the wiper’s knot need to peers inward then can work but the wiper air continues to leak heavily. Unable to stop the air leak. Wiper knot  suspect faulty. MR pressure between 8 to 9 bars.  3532 found pressure regulator air leaking badly. Replaced the pressure regulator & function test both A/s & B/s wiper operation - OK. Performed pneumatic test & results as follows :                             3531               3532 Cut-in   :                 8.40 bar           8.50 bar Cut-out  :                 10.30 bar          10.30 bar Charging Rate :           2 min 30 sec       2 min 32 sec Air Leak      :            0.50 bar            0.50 bar  Ridzuan/Suhairi 44115