Transfer Assembly: Inspection

WARNING: This page is about a different variant/trim than selected.

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 REFERENCE CHART

Item	Preload
without SST	0.39 to 0.69 Nm (4.0 to 7.0 kgfcm, 3.5 to 6.1 in.*lbf)
with SST	0.28 to 0.50 Nm (2.9 to 5.1 kgfcm, 2.5 to 4.4 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 REFERENCE CHART

Item	Preload
without SST	0.25 to 0.44 Nm (2.5 to 4.5 kgfcm, 2.2 to 3.9 in.*lbf) + driven pinion preload
with SST	0.18 to 0.32 Nm (1.8 to 3.3 kgfcm, 1.6 to 2.8 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:
  
  0.10 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.
  
  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.
  
  Fig 3: Coating 3 Or 4 Teeth At 4 Different Positions On Ring Gear With Prussian Blue
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Rotate the ring gear to inspect the tooth pattern.
  
  Fig 4: Tooth Pattern Chart
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
3. 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-block.
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