Inspection And Repair - Isuzu 4JA1 Workshop Manual

Make the necessary adjustments, repairs, and part replacements if excessive wear or damage is discovered during
inspection.

INSPECTION AND REPAIR

Gear Teeth and Body Inner Wall Clearance
Use a feeler gauge to measure the clearance between the
gear teeth and the body inner wall.
If the clearance between the gear teeth and the body inner
wall exceeds the specified limit, either the gear or the body
must be replaced.
Gear Teeth and Body Inner Wall Clearance
051RY00001
Gear and Body Clearance
Use a feeler gauge to measure the clearance between the
body and the gear.
If the clearance between the gear and the body exceeds
the specified limit, the body must be replaced.
Gear and Body Clearance
RTW46ASH002701
Drive Shaft and Oil Pump Body Clearance
Use a micrometer to measure the drive shaft outside
diameter.
Use an inside dial indicator to measure the pump body
inside diameter.
If the clearance between the drive shaft and the oil pump
body exceeds the specified limit, the oil pump assembly
must be replaced.
Drive Shaft and Oil Pump Body Clearance
051RY00003
ENGINE MECHANICAL 6A – 129
Standard
0.14 (0.0055)
Standard
0.06 (0.0024)
Standard
0.04 (0.0016)
mm (in)
Limit
0.20 (0.0079)
mm (in)
Limit
0.15 (0.0059)
mm (in)
Limit
0.20 (0.0079)