Idler Gear

SST:

Preparation




Disassembly / Assembly
1. Disassemble in the order shown in the figure, referring to Disassembly Note.
2. Inspect all parts and repair or replace as necessary.
3. Assemble in the reverse order of disassembly, referring to Assembly Procedure.




Disassembly note Locknut

NOTE: Use protective plates in the vise to prevent damage to the SST.

Secure the idler shaft in a vise with the SST, and remove the locknut.




Bearing outer race
Remove the bearing outer race from the idler gear with the SST.

Assembly procedure




1. Press the bearing outer races in with the SST.




2. Install the idler gear bearing onto the idler shaft, then install the idler gear, adjustment shims, spacer, and bearing.

NOTE: Use protective plates in the vise to prevent damage to the SST.




3. Secure the idler shaft in a vise with the SST, and tighten the locknut to the lower limit of the tightening torque.

Tightening torque: 128 - 176 N.m {13 - 18 kg.m, 95 - 130 ft.lbf}






NOTE: Use protective plates in the vise to prevent damage to the idler gear.

4. Check and adjust the idler gear bearing preload.
1. Turn the idler gear assembly and SST over, and secure the gear in the vice.
2. Attach the SST and spring scale or torque wrench, and measure the preload while tightening the locknut.






NOTE: Read the preload when the idler shaft starts to turn.

Tightening torque: 128 - 176 N.m {13 - 18 kg.m, 95 - 130 ft.lbf}

Preload: 0.03 - 0.8 N.m {0.3 - 9.0 kg.cm, 0.27 - 7.8 in.lbf}

Value indicated on pull scale: 0.3 - 8 N {0.03 - 0.9 kg, 0.7 - 1.9 lbf}






NOTE:
- The maximum allowable number of shims is 7.
- Preload is reduced by increasing the thickness of the shims, or increased by reducing the thickness.




5. If the specified preload cannot be obtained within the specified tightening torque, adjust by selecting the proper adjustment shims.