Transfer Assembly: Inspection

INSPECT PRELOAD

Using SST and a torque wrench, measure the preload of the backlash between the driven pinion and ring gear.

SST 09326-20011

Fig 1: Measuring Preload Of Backlash Between Driven Pinion And Ring Gear

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Preload (at Starting)

PRELOAD SPECIFICATION

Item	Preload
without SST	0.56 to 0.94 Nm (6 to 9 kgfcm, 5 to 8 in.*lbf)
with SST	0.40 to 0.67 Nm (4 to 6 kgfcm, 4 to 5 in.*lbf)

HINT:

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

Using SST and a torque wrench, measure the total preload.

SST 09326-20011

Preload (at Starting)

PRELOAD SPECIFICATION

Item	Preload
without SST	0.35 to 0.53 Nm (4 to 5 kgfcm, 3 to 4 in.*lbf) + driven pinion preload
with SST	0.25 to 0.38 Nm (3 to 4 kgfcm, 3 to 3.3 in.*lbf) + driven pinion preload

HINT:

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

INSPECT RING GEAR BACKLASH
1. Using a dial indicator, check the backlash of the ring gear.
Backlash:

0.14 to 0.25 mm (0.00551 to 0.00984 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.

Fig 2: Checking Backlash Of Ring Gear
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
INSPECT TOOTH CONTACT BETWEEN RING GEAR AND DRIVE PINION
1. Coat 3 or 4 teeth at 4 different positions on the ring gear with Prussian blue.
2. Turn the driven pinion to rotate the ring gear 10 times or more clockwise and 10 times or more counterclockwise.
3. Rotate the ring gear to inspect the tooth pattern.
  
  Fig 3: Applying Prussian Blue To Ring Gear Teeth
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  Fig 4: Identifying Tooth Contact Pattern
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
4. If the tooth contact pattern is not correct, select a new transfer output shaft washer that is thicker or thinner as necessary and recheck.
INSPECT RUNOUT OF RING GEAR
1. Place the transfer ring gear mounting case on the V-blocks.
2. Using a dial indicator, check the runout of the ring gear.
Maximum runout:

0.06 mm (0.00236 in.)

Fig 5: Checking Runout Of Ring Gear
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
INSPECT TRANSFER RING GEAR MOUNTING CASE
1. Place the transfer ring gear mounting case on the V-blocks.
2. Using a dial indicator, check the runout of the ring gear mounting case.
Maximum runout:

0.04 mm (0.00157 in.)

Fig 6: Checking Runout Of Ring Gear Mounting Case
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002