Pre-Inspection (Checking Gear Measurements)
Pre-inspectionBefore disassembling the rear final drive, perform the following inspections.
TOTAL PRELOAD
1. Turn the drive pinion in both directions several times to set the bearing rollers.
2. Check the total preload using Tool.
Tool number: ST3127S000 (J-25765-A)
Total preload: 2.05 - 4.11 Nm (0.21 - 0.42 kg-m, 19 - 36 inch lbs.)
DRIVE GEAR TO DRIVE PINION BACKLASH
Check the drive gear to drive pinion backlash using a dial gauge at several points as shown.
Drive gear to drive pinion backlash: 0.13 - 0.18 mm (0.0051 - 0.0070 inch)
DRIVE GEAR RUNOUT
Check the runout of the drive gear using a dial gauge as shown.
Runout limit: 0.05 mm (0.0020 inch) or less
COMPANION FLANGE RUNOUT
Mount the dial gauge indicator so the dial gauge needle is positioned on the propeller shaft mounting surface. Rotate the companion flange and measure the runout as shown.
Companion flange runout: 0.08 mm (0.003 inch) or less
^ If runout is not within specification, remove the companion flange, rotate 90° in relation to the drive pinion, and install the companion flange using a new drive pinion nut. Tighten the drive pinion nut to the minimum specified torque. Final drive pinion nut torque will be determined when adjusting the total preload.
Tool number: KV40104000 ( - )
Drive pinion nut: 167 - 372 Nm (17 - 38 kg-m, 124 - 274 ft. lbs.)
CAUTION: The drive pinion nut is not reusable. Use a new drive pinion nut for installation.
^ If runout is not within specification after rotating the companion flange 90° on the drive pinion, replace the companion flange. Recheck the companion flange runout.
^ If the new companion flange runout is not within specification, inspect the drive pinion bearing and the drive pinion. Repair as necessary.
CAUTION: Clean all of the rust and dirt off of the companion flange surface before measuring the companion flange runout.
TOOTH CONTACT
Check the tooth contact.