Transfer Assembly: Inspection: 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.

Fig 1: Measuring Total Preload Using SST

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

SST: 09326-20011

Preload (at Starting)

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)

Item	Preload
without SST	0.25 to 0.44 Nm (3 to 4 kgfcm, 3 to 3.8 in.*lbf) + driven pinion preload
with SST	0.18 to 0.32 Nm (2 to 3 kgfcm, 2 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.
  
  Fig 2: Inspecting Ring Gear Backlash Using Dial Indicator
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  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.
INSPECT TOOTH CONTACT BETWEEN RING GEAR AND DRIVE PINION
1. Coat 3 or 4 teeth at the 4 different positions on the ring gear with red lead primer.
  
  Fig 3: Applying Prussian Blue To Ring Gear Teeth
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Rotate the ring gear to inspect the tooth pattern.
  
  Fig 4: Tooth Contact 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 RING GEAR RUNOUT
1. Place the transfer ring gear mounting case on the V-blocks.
  
  Fig 5: Checking Runout Of Ring Gear Using Dial Indicator
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Using a dial indicator, check the ring gear runout.
  Maximum runout
  
  0.06 mm (0.00236 in.)
  
  If the ring gear runout is greater than the maximum, replace the transfer gear kit.
INSPECT TRANSFER RING GEAR MOUNTING CASE
1. Place the transfer ring gear mounting case on the V-block.
  
  Fig 6: Checking Runout Of Ring Gear Mounting Case Using Dial Indicator
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Using a dial indicator, check the ring gear mounting case runout.
  Maximum runout
  
  0.04 mm (0.00157 in.)
  
  If the ring gear mounting case runout is greater than the maximum, replace the ring gear mounting case.