Trooper LS V6-3.5L (1998)
Functional Inspection of Master Cylinder Piston
Push the primary piston (1) with your fingers to check that it travels smoothly. If the motion is questionable, replace the master cylinder as a complete
assembly.
Functional Inspection Of Master Cylinder
Inspect the master cylinder for function as follows. If any abnormal function is found, replace with a new one. (including the master cylinder
attachment and master cylinder plug (7))
Install the primary piston holder (3) J-39242 onto the master cylinder (4). Make sure the spacer (2) (2 bolts) with its adjusting bolt is screwed in up to
the "0" line
Connect the master cylinder attachment (5) J-39242 with the end of the radiator cap tester (6) J-24460-01, and apply air pressure with the cap tester.
Make sure there is no rise in pressure and that with the adjusting bolt further screwed in 5 mm (align the adjusting bolt to the "5" line).
There should be a pressure increase of 0.5 kg/cm2 or more.
NOTE: When checking the front (or primary) side, be sure to mount the master cylinder plug in the rear (or secondary) port.
