Pre-Inspection

Pre-Inspection
Before disassembling final drive, drain off oil from the gear and remove the rear cover. Then, perform the following inspection.

TOTAL PRELOAD





1. Turn drive pinion in both directions several times to set bearing rollers.
2. Check total preload with tool.
Tool number: ST3127S000 (see J25765-A)
Total preload (With oil seal): 2.84 - 3.75 Nm (0.29 - 0.38 kg-m, 26 - 33 inch lbs.)

DRIVE GEAR TO DRIVE PINION BACKLASH





Check drive gear to drive pinion backlash with a dial indicator at several points.
Drive gear to drive pinion backlash: 0.10 - 0.15 mm (0.0039 - 0.0059 inch)

DRIVE GEAR RUNOUT





Check runout of drive gear with a dial indicator.
Drive gear runout limit: 0.05 mm (0.0020 inch) or less

COMPANION FLANGE RUNOUT





1. Fit a dial gauge onto the companion flange face (inner side of the propeller shaft mounting bolt holes).
2. Rotate the companion flange to check for runout.
Runout limit: 0.13 mm (0.0051 inch)
3. Fit a test indicator to the inner side of the companion flange (socket diameter).
4. Rotate the companion flange to check for runout.
Runout limit: 0.13 mm (0.0051 inch)
5. If the runout value is outside the repair limit, follow the procedure below to adjust.
a. Check for runout while changing the phase between companion flange and drive pinion gear by 90° step, and search for the point where the runout is the minimum.
b. If the runout value is still outside of the limit after the phase has been changed, replace the companion flange.
c. If the runout value still outside of the limit after the companion flange has been replaced, check pinion bearing and drive pinion assembly.

TOOTH CONTACT
Check tooth contact.