Output Shaft: Service and Repair

DISASSEMBLY





1. Inspect each gear thrust clearance. Using a feeler gauge, measure the thrust clearance of each gear.
Standard clearance: 0.10-0.25 mm (0.0039-0.0098 inch).
Maximum clearance: 0.30 mm (0.0118 inch).





2. Inspect each gear radial clearance. Using a dial indicator, measure the radial clearance for each gear.
Standard clearance:
1st and 2nd gears: 0.009-0.060 mm (0.0004-0.0024 inch).
3rd gear: 0.015-0.066 mm (0.0006-0.0026 inch).
Maximum clearance:
1st and 2nd gears: 0.150 mm (0.0059 inch).
3rd gear: 0.200 mm (0.0079 inch).
If the clearance exceeds the maximum, replace the gear, shaft or needle roller bearing.
3. Remove output shaft center bearing and 1st gear assembly, as follows:
a. Shift the No.1 hub sleeve onto the 2nd gear.





b. Using a press, remove the center bearing, 1st gear, needle roller bearing, inner race and synchronizer ring.
4. Remove locking ball on output shaft. Using a magnetic finger, remove the locking ball.





5. Remove No. 1 hub sleeve assembly, 2nd gear and needle roller bearing. Using a press, remove the parts from the shaft as an assembly.
6. Remove No.1 hub sleeve, shifting key and spring from No.1 clutch hub, as follows:
a. Remove the No.1 hub sleeve from the No.1 clutch hub.





b. Push the shifting key spring with a screwdriver, remove the three shifting keys and key springs.
7. Remove No.2 hub sleeve assembly and 3rd gear, as follows:
a. Using a snap ring expander, remove the snap ring.





b. Using a press, remove the No. 2 hub sleeve, synchronizer ring and 3rd gear.
8. Remove No.2 hub sleeve, shifting key and spring from no.2 clutch hub.
a. Remove the No.2 hub sleeve from the No.2 clutch hub.





b. Push the shifting key spring with a screwdriver, remove the three shifting keys and key springs.

OUTPUT SHAFT COMPONENT PARTS INSPECTION
1. Inspect 1st gear synchronizer ring, as follows:
a. Check for wear or damage.





b. Check the braking effect of the synchronizer ring. Turn the synchronizer ring in one direction while pushing it to the gear cone. Check that the ring locks. If the braking effect is insufficient, apply a small amount of fine lapping compound between the synchronizer ring and gear cone. Lightly rub the synchronizer ring and gear cone together.

NOTICE: Ensure the fine lapping compound is completely washed off after rubbing.

c. Check again the braking effect of the synchronizer ring.





d. Using a feeler gauge, measure the clearance between the synchronizer ring back and gear spline end.
Minimum clearance: 0.5 mm (0.020 inch).
If the clearance is less than the minimum, replace the synchronizer ring and gear cone by applying a small amount of fine lapping compound.

NOTICE: Ensure the fine lapping compound is completely washed off after rubbing.

2. Inspect 2nd and 3rd gears synchronizer ring, as follows:
a. Check for wear or damage.





b. Install the synchronizer inner ring,middle ring and outer ring to each gear.





c. Check the braking effect of the synchronizer ring. Turn the synchronizer ring in one direction while pushing it to the gear cone. Check that the ring locks. If it does not lock, replace the synchronizer ring.





d. Using a feeler gauge, measure the clearance between the synchronizer ring back and the gear spline end.
Minimum clearance: 0.7 mm (0.028 inch).
If the clearance is less than the minimum, replace the synchronizer ring.





3. Inspect shift fork and hub sleeve clearance. Using a feeler gauge, measure the clearance between the hub sleeves and shift forks.
Maximum clearance: 1.0 mm (0.039 inch).
If the clearance exceeds the maximum, replace the shift fork or hub sleeve.
4. Inspect output shaft and inner race, as follows:





a. Using vernier calipers, measure the output shaft flange thickness.
Minimum thickness: 5.60 mm (0.2205 inch).
If the thickness is less than the minimum, replace the output shaft.





b. Using vernier calipers, measure the inner race flange thickness.
Minimum thickness: 4.78 mm (0.1881 inch).
If the thickness is less than the minimum, replace the inner race.





c. Using a micrometer, measure the outer diameter of the output shaft journal.
Minimum diameter:
2nd gear: 42.975 mm (1.6919 inch).
3rd gear: 31.969 mm (1.2586 inch).
If the outer diameter is less than the minimum, replace the output shaft.





d. Using a micrometer, measure the outer diameter of the inner race.
Minimum diameter: 42.975 mm (1.6919 inch).
If the outer diameter is less than the minimum, replace the inner race.





e. Using a dial indicator, check the shaft runout.
Maximum runout: 0.06 mm (0.0024 inch).
If the runout exceeds the maximum, replace the output shaft.

OUTPUT SHAFT ASSEMBLY

NOTE: Coat all of the sliding and rotating surfaces with gear oil before assembly.

1. Install No.1 and No.2 clutch hubs into hub sleeve, as follows:
a. Install the three shifting key springs to the clutch hub.





b. While pushing the shifting key spring with a screwdriver, install the three shifting keys.





c. While pushing the three shifting keys, install the clutch hub to the hub sleeve, as shown.
2. Install 3rd gear and No.2 clutch hub on output shaft, as follows:
a. Apply gear oil to the shaft.





b. Place the synchronizer ring on the gear and align the ring slots with the shifting keys.





c. Using a press, install the 3rd gear and No.2 clutch hub.
3. Install snap ring, as follows:





a. Select a snap ring that will allow minimum axial play.





b. Using a snap ring expander, install the snap ring.
4. Inspect 3rd gear thrust clearance.
5. Install 2nd gear and No.1 clutch hub, as follows:
a. Apply gear oil to the shaft and needle roller bearing.





b. Place the synchronizer ring on the gear and align the ring slots with the shifting keys.
c. Install the needle roller bearing in the 2nd gear.





d. Using a press, install the 2nd gear and No.1 clutch hub.
6. Inspect 2nd gear thrust clearance.
7. Install locking ball and 1st gear assembly, as follows:
a. Install the locking ball in the shaft.
b. Apply gear oil to the bearing.





c. Assemble the 1st gear, synchronizer ring, needle roller bearing and bearing inner race.
d. Install the assembly on the output shaft with the synchronizer ring slots aligned with the shifting keys and turn the inner race to align it with the locking ball.





8. Install output shaft center bearing. Using Special Service Tool (SST) 09506-35010 or equivalent, and a press, install the bearing on the output shaft with the outer race snap ring groove toward the rear.

NOTE: Hold the 1st gear inner race to prevent it from falling.

9. Inspect 1st gear thrust clearance.