K 2500 Truck 4WD V8-379 6.2L DSL VIN C FI (1989)
Clutch: Testing and Inspection
Direct Clutch Plates Burned
1.
Restricted orifice in vacuum line to modulator.
2.
Check ball in direct clutch piston damaged, stuck or missing.
3.
Defective modulator bellows.
4.
Center support bolt loose.
5.
Center support oil rings or grooves damaged or missing.
6.
Clutch piston seals damaged or missing.
7.
Front and rear servo pistons and seals damaged.
8.
Manual valve bent and center land not cleaned up.
9.
Case valve body face not flat or porosity between channels.
10.
Intermediate sprag clutch installed backwards.
11.
3-2 valve, 3-2 spring or 3-2 spacer pin installed in wrong location in 3-2 valve bore.
