2007 ISUZU KB P190 Workshop Repair Manual

Page 4657 of 6020

ISUZU KB P190 2007  Workshop Repair Manual MANUAL TRANSMISSION     7B1-51 
TROUBLESHOOTING 
1.  ABNORMAL NOISE 
 
1)  NOISY IN NEUTRAL 
 
Checkpoint  Trouble  Cause  Countermeasure 
 
Replenish or replace the gear 
oilInsufficient or improper

Page 4658 of 6020

ISUZU KB P190 2007  Workshop Repair Manual 7B1-52     MANUAL TRANSMISSION 
2)  NOISY OPERATION 
 
Checkpoint  Trouble  Cause  Countermeasure 
 
Replenish or replace the gear 
oilInsufficient or improper engine
oil
NG
Replace the gear(s)
Replac

Page 4659 of 6020

ISUZU KB P190 2007  Workshop Repair Manual MANUAL TRANSMISSION     7B1-53 
2.  HARD SHIFTING 
 
Checkpoint  Trouble  Cause  Countermeasure 
 
Change lever play
Clutch pedal free play
Repair or replace the 
applicable parts and regrease
Readjus

Page 4660 of 6020

ISUZU KB P190 2007  Workshop Repair Manual 7B1-54     MANUAL TRANSMISSION 
Checkpoint  Trouble  Cause  Countermeasure 
 
Synchronizer assembly
Shift arm and synchronizer 
sleeve
Replace the worn parts
Replace the worn parts
W orn synchronizer

Page 4661 of 6020

ISUZU KB P190 2007  Workshop Repair Manual MANUAL TRANSMISSION     7B1-55 
3.  WALKING OR JUMPING OUT OF GEAR 
 
Checkpoint  Trouble  Cause  Countermeasure 
 
Shift rod and quadrant box 
sliding faces
Detent ball
Replace the shift rod and/or
t

Page 4662 of 6020

ISUZU KB P190 2007  Workshop Repair Manual 7B1-56     MANUAL TRANSMISSION 
Checkpoint  Trouble  Cause  Countermeasure 
 
Synchronizer assembly
Bearings (Mainshaft, 
countershaft, and individual
gears)
Replace the spring
Replace the bearing(s)

Page 4663 of 6020

ISUZU KB P190 2007  Workshop Repair Manual MANUAL TRANSMISSION     7B1-57 
4.  OIL LEAKAGE 
 
Checkpoint  Trouble  Cause  Countermeasure 
 
Gear oilReplace the gear oilImproper gear oil
Drain plug and/or filler plugTighten the plug(s) and 
rep

Page 4664 of 6020

ISUZU KB P190 2007  Workshop Repair Manual 7B1-58     MANUAL TRANSMISSION 
Special Tools (4×
×× 
×
2) 
 
ILLUSTRATION  TOOL NO. 
TOOL NAME  ILLUSTRATION 
TOOL NO. 
TOOL NAME 
  5-8840-2155-0 
(J-37217) 
Bearing remover    5-8840-2159-0 
(J