MF1A Transfer Case

MF1A TRANSFER / 4WD / AWD: TRANSFER ASSEMBLY: INSPECTION

INSPECTION

1. INSPECT PRELOAD





(a) Using SST and a torque wrench, measure the preload of the backlash between the driven pinion and ring gear.
SST: 09326-20011
Preload (at Starting):





HINT: Use a torque wrench with a fulcrum length of 130 mm (5.12 in.).

(b) Using SST and a torque wrench, measure the total preload.
SST: 09326-20011
Preload (at Starting):





HINT: Use a torque wrench with a fulcrum length of 130 mm (5.12 in.).

2. INSPECT RING GEAR BACKLASH





(a) Using a dial indicator, check the backlash of the ring gear.
Backlash:
0.10 to 0.18 mm (0.00394 to 0.00709 in.)
If the backlash is not within the specification, adjust the side bearing preload or repair as necessary.
NOTE: Check at least 3 positions on the circumference of the ring gear.

3. INSPECT TOOTH CONTACT BETWEEN RING GEAR AND DRIVE PINION





(a) Coat 3 or 4 teeth at 4 different positions on the ring gear with Prussian blue.
(b) Rotate the ring gear to inspect the tooth pattern.





(c) If the tooth contact pattern is not correct, select a new transfer output shaft washer that is thicker or thinner as necessary and recheck.
4. INSPECT RUNOUT OF RING GEAR





(a) Place the transfer ring gear mounting case on the V-blocks.
(b) Using a dial indicator, check the runout of the ring gear.
Maximum runout:
0.06 mm (0.00236 in.)
5. INSPECT TRANSFER RING GEAR MOUNTING CASE





(a) Place the transfer ring gear mounting case on the V-block.
(b) Using a dial indicator, check the runout of the ring gear mounting case.
Maximum runout:
0.04 mm (0.00157 in.)