Gear: Testing and Inspection

1. MEASURE EACH GEAR THRUST CLEARANCE
(a) Using a feeler gauge, measure the thrust clearance of 1st gear and 3rd gear.
(b) Using a dial indicator, measure the thrust clearance of 2nd gear.





1st gear
Standard clearance:
0.10 - 0.45 mm (0.0039 - 0.0177 in.)
Maximum clearance:
0.50 mm (0.0197 in.)
2nd and 3rd gears
Standard clearance:
0.10 - 0.25 mm (0.0039 - 0.0098 in.)
Maximum clearance:
0.30 mm (0.0118 in.)





2. CHECK OIL CLEARANCE OF EACH GEAR
Using a dial indicator, measure the oil clearance between the gear and shaft with the needle roller bearing installed.
Standard clearance:
0.015 - 0.068 mm (0.0006 - 0.0027 in.)
Maximum clearance:
0.16 mm (0.0063 in.)
If the clearance exceeds the limit, replace the gear needle roller bearing or shaft.