Isuzu KB P190. Manual - part 1206

7C-46  CLUTCH 

Checkpoint 

 

Problem 

 

Countermeasure 

 

Crankshaft pilot bearing

Replace the pilot bearing

Top gear shaft wobble is

causing pilot bearing wear

Repair or replace the flywheel

Flywheel unevenly worn

NG

NG

OK

OK

Flywheel

Continued from the previous page

 

CLUTCH  7C-47 

3.  CLUTCH SHUDDER 

 

Checkpoint 

 

Problem 

 

Countermeasure 

 

Grease or oil adhering to the

facing

Clean the related parts and/or
replace the facing
Replace the transmission front
cover oil seal

Replace the pressure plate

assembly

Defective transmission front

cover oil seal

Pressure plate unevenly worn

Pressure plate

Clean the related parts and/or

replace the facing

Tighten the connections

Repair or replace the

applicable parts

Too much grease

Poorly connected components

causing looseness and

abrasion

OK

NG

NG

NG

NG

OK

Power train

Clean and grease the spline

contact surface

Insufficient grease on the

spline contact surface of the

splined hub

Driven plate

Clean or repair the top gear
shaft spline
Replace the top gear shaft

Clean the related parts and/or
replace the facing
Replace the crankshaft rear oil
seal

Corrosion or step wear on the

top gear shaft spline

Defective crankshaft rear oil

seal

OK

NG

NG

NG

OK

Continued on the next page

 

7C-48  CLUTCH 

Checkpoint 

 

Problem 

 

Countermeasure 

 

Replace the driven plate

assembly

Warpage and/or uneven wear

Replace the driven plate

assembly

Loose facing rivets

NG

NG

OK

Driven plate

Continued from the previous page

Flywheel

Repair or replace the flywheel

Flywheel uneven wear

NG

OK

 

CLUTCH  7C-49 

4.  CLUTCH NOISE 

 

1)  Clutch Pedal Depressed (Clutch Disengaged) 

 

Checkpoint 

 

Problem 

 

Countermeasure 

 

Replace the pedal shaft with

the sleeve

Worn pedal shaft and/or

sleeve

Clean and grease the pedal

shaft and sleeve

Insufficient grease at the

pedal shaft and sleeve

NG

NG

Pedal shaft and sleeve

Master cylinder piston and

push rod contact faces

Clean and grease the master

cylinder piston and push rod

contact faces

Insufficient grease at the

maser cylinder piston and

push rod contact faces

NG

OK

Driven plate

Replace the driven plate

assembly

Loose or broken damper

spring

NG

OK

Crankshaft pilot bearing

Replace the crankshaft pilot

bearing

Insufficient grease at the

crankshaft pilot bearing (pilot

bearing worn)

NG

OK

 

 
 

2)  Clutch Pedal Not Depressed (Clutch Engaged) 

 

Replace the driven plate

Weak or broken damper

spring

NG

Driven plate damper spring

Replace the crankshaft pilot

bearing

Insufficient grease at the

crankshaft pilot bearing (pilot

bearing worn)

OK

NG

Crankshaft pilot bearing