PROCEDURE
INSPECT 1ST GEAR THRUST CLEARANCE
Using a dial indicator, measure the 1st gear thrust clearance.
| Standard clearance |
|---|
| 0.20 to 0.38 mm (0.00787 to 0.0150 in.) |
| Maximum clearance |
|---|
| 0.38 mm (0.0150 in.) |
If the clearance exceeds the maximum, replace the No. 1 transmission clutch hub, 1st gear bush or 1st gear.
INSPECT 2ND GEAR THRUST CLEARANCE
Using a dial indicator, measure the 2nd gear thrust clearance.
| Standard clearance |
|---|
| 0.15 to 0.33 mm (0.00591 to 0.0130 in.) |
| Maximum clearance |
|---|
| 0.33 mm (0.0130 in.) |
If the clearance exceeds the maximum, replace the inner 2nd gear bearing race, No. 1 transmission clutch hub, 2nd gear or 3rd driven gear.
INSPECT 1ST GEAR RADIAL CLEARANCE
Using a dial indicator, measure the 1st gear radial clearance.
| Standard clearance |
|---|
| 0.009 to 0.045 mm (0.000354 to 0.00177 in.) |
| Maximum clearance |
|---|
| 0.045 mm (0.00177 in.) |
If the clearance exceeds the maximum, replace the 1st gear, 1st gear needle roller bearing or output shaft.
INSPECT 2ND GEAR RADIAL CLEARANCE
Using a dial indicator, measure the 2nd gear radial clearance.
| Standard clearance |
|---|
| 0.009 to 0.045 mm (0.000354 to 0.00177 in.) |
| Maximum clearance |
|---|
| 0.045 mm (0.00177 in.) |
If the clearance exceeds the maximum, replace the 2nd gear, 2nd gear needle roller bearing or output shaft.
INSPECT OUTPUT SHAFT
Using a dial indicator and 2 V-blocks, check the output shaft runout.
| Maximum runout |
|---|
| 0.015 mm (0.000591 in.) |
If the runout exceeds the maximum, replace the output shaft.
Using a micrometer, measure the outer diameter of the output shaft journal surface at the locations indicated.
| Standard outer diameter |
|---|
| Part A |
| 30.002 to 30.017 mm (1.1812 to 1.1818 in.) |
| Part B |
| 37.990 to 38.000 mm (1.4957 to 1.4961 in.) |
| Part C |
| 40.790 to 40.800 mm (1.6059 to 1.6063 in.) |
| Part D |
| 28.002 to 28.017 mm (1.1024 to 1.1030 in.) |
| Minimum outer diameter |
|---|
| Part A |
| 30.002 mm (1.1812 in.) |
| Part B |
| 37.990 mm (1.4957 in.) |
| Part C |
| 40.790 mm (1.6059 in.) |
| Part D |
| 28.002 mm (1.1024 in.) |
If any of the outer diameters are less than the minimum, replace the output shaft.
INSPECT 1ST GEAR
Using a cylinder gauge, measure the inside diameter of the 1st gear.
| Standard inside diameter |
|---|
| 52.909 to 52.925 mm (2.0830 to 2.0837 in.) |
| Maximum inside diameter |
|---|
| 52.925 mm (2.0837 in.) |
If the inside diameter exceeds the maximum, replace the 1st gear.
INSPECT 2ND GEAR
Using a cylinder gauge, measure the inside diameter of the 2nd gear.
| Standard inside diameter |
|---|
| 52.909 to 52.925 mm (2.0830 to 2.0837 in.) |
| Maximum inside diameter |
|---|
| 52.925 mm (2.0837 in.) |
If the inside diameter exceeds the maximum, replace the 2nd gear.
INSPECT 1ST GEAR BUSH
Using a micrometer, measure the outer diameter of the 1st gear bush.
| Standard outer diameter |
|---|
| 47.89 to 47.90 mm (1.8854 to 1.8858 in.) |
| Minimum outer diameter |
|---|
| 47.89 mm (1.8854 in.) |
If the outer diameter is less than the minimum, replace the 1st gear bush.
Using a cylinder gauge, measure the inside diameter of the 1st gear bush.
| Standard inside diameter |
|---|
| 40.805 to 40.820 mm (1.6065 to 1.6071 in.) |
| Maximum inside diameter |
|---|
| 40.820 mm (1.6071 in.) |
If the inside diameter exceeds the maximum, replace the 1st gear bush.
INSPECT INNER 2ND GEAR BEARING RACE
Using a micrometer, measure the outer diameter of the inner 2nd gear bearing race.
| Standard outer diameter |
|---|
| 47.89 to 47.90 mm (1.8854 to 1.8858 in.) |
| Minimum outer diameter |
|---|
| 47.89 mm (1.8854 in.) |
If the outer diameter is less than the minimum, replace the inner 2nd gear bearing race.
Using a cylinder gauge, measure the inside diameter of the inner 2nd gear bearing race.
| Standard inside diameter |
|---|
| 38.005 to 38.020 mm (1.4963 to 1.4968 in.) |
| Maximum inside diameter |
|---|
| 38.020 mm (1.4968 in.) |
If the inside diameter exceeds the maximum, replace the inner 2nd gear bearing race.
INSPECT NO. 1 SYNCHRONIZER RING SET (FOR 1ST GEAR)
Coat the 1st gear cone and No. 1 synchronizer ring set (inner ring, middle ring, and outer ring) with gear oil.
| *1 | Outer Ring |
| *2 | Middle Ring |
| *3 | Inner Ring |
Install the inner ring to the 1st gear.
Install the middle ring to the 1st gear.
Install the outer ring to the 1st gear.
| *a | Locks |
Check for wear and damage.
Turn the No. 1 synchronizer ring set in one direction while pushing it against the 1st gear cone.
Check that the ring set locks.
If the No. 1 synchronizer ring set does not lock, replace the No. 1 synchronizer ring set.
Using a feeler gauge, measure the clearance between the No. 1 synchronizer ring set (outer ring) and gear spline end.
| Standard clearance |
|---|
| 0.915 to 1.855 mm (0.03602 to 0.07303 in.) |
| Minimum clearance |
|---|
| 0.915 mm (0.03602 in.) |
If the clearance is less than the minimum, replace the No. 1 synchronizer ring set.
INSPECT NO. 1 SYNCHRONIZER RING SET (FOR 2ND GEAR)
Coat the 2nd gear cone and No. 1 synchronizer ring set (inner ring, middle ring, and outer ring) with gear oil.
| *1 | Outer Ring |
| *2 | Middle Ring |
| *3 | Inner Ring |
Install the inner ring to the 2nd gear.
Install the middle ring to the 2nd gear.
Install the outer ring to the 2nd gear.
| *a | Locks |
Check for wear and damage.
Turn the No. 1 synchronizer ring set in one direction while pushing it against the 2nd gear cone.
Check that the ring set locks.
If the No. 1 synchronizer ring set does not lock, replace the No. 1 synchronizer ring set.
Using a feeler gauge, measure the clearance between the No. 1 synchronizer ring set (outer ring) and gear spline end.
| Standard clearance |
|---|
| 0.92 to 1.86 mm (0.0362 to 0.0732 in.) |
| Minimum clearance |
|---|
| 0.92 mm (0.0362 in.) |
If the clearance is less than the minimum, replace the No. 1 synchronizer ring set.
INSPECT REVERSE GEAR
Using a vernier caliper, measure the width of the reverse gear groove (A) and the thickness of the claw part on the No. 1 gear shift fork shaft assembly (B), and calculate the clearance.
| Standard clearance (A - B) |
|---|
| 0.1 to 0.5 mm (0.00394 to 0.0197 in.) |
If the clearance is out of specification, replace the reverse gear and No. 1 gear shift fork shaft assembly.
INSPECT NO. 1 TRANSMISSION CLUTCH HUB
Check that the No. 1 transmission clutch hub and reverse gear slide smoothly.
Check that the edges of the reverse gear spline gear are not worn down.