Adjustment

DRIVE PINION

Adjustment

BACKLASH

1.Install a bolt to the companion flange.
2.Fit a dial indicator onto the bolt.
3.Measure the circumference backlash of the companion flange, and Check that it satisfies the standard below.
Backlash: Refer to DLN-94, "Backlash" Backlash.
- If measured value is out of the specification, disassemble it to check and adjust each part.

TOOTH CONTACT

1.Remove the pinion sleeve assembly. Refer to "Disassembly" Disassembly.

2.Apply red lead to the drive gear.

CAUTION:
Apply red lead to both the faces of 3 to 4 gears at 4 locations evenly spaced on the drive gear.
3.Install the pinion sleeve shims and pinion sleeve assembly.
Refer to "Assembly" Assembly.
4.Remove the plug on the upper side of the transfer case.
When installing plug, apply sealant on screw part, and tighten it at the specified torque. Refer to "Exploded View" Exploded View.
Use Genuine Silicone RTV or equivalent. Refer to "Recommended Chemical Products and Sealants" Recommended Chemical Products and Sealants.
Revision: March 20122013 Infiniti JX

5.Rotate the companion flange back and forth several times, and check the drive pinion gear to drive gear tooth contact by viewing from the plug hole.

6.If tooth contact is poorly adjusted, adjust pinion height (dimension X) in the following manner.
For selecting adjusting shims, refer to the latest parts information.
Revision: March 20122013 Infiniti JX

- If the tooth contact is near the face (face contact), or near the heal (heel contact), thin the pinion sleeve shims to move the drive pinion closer to the drive gear.

- If the tooth contact is near the flank (flank contact), or near the toe (toe contact), thicken the pinion sleeve shims to move the drive pinion farther from the drive gear.

PINION BEARING PRELOAD

1.Remove the pinion sleeve assembly. Refer to "Disassembly" Disassembly.
2.Rotate the companion flange back and forth 2 to 3 times. Check for unusual noise, rotation malfunction, and other malfunctions.
3.Rotate the companion flange at least 20 times to check for smooth operation of the bearing.
Revision: March 20122013 Infiniti JX

4.Measure the drive pinion bearing preload with the preload gauge (A) [SST: ST3127S000 (J-25765-A)].
Preload torque: Refer to "Preload Torque" Preload Torque.

CAUTION:
- Every rotational part shall rotate smoothly with the specified gear oil.
- Preload torque differs before disassembly and after reassembly.
- If measured value is out of the specification, disassemble the pinion sleeve assembly to check and adjust each part.

TOTAL PRELOAD

1.Measure pinion bearing preload torque (P1). Refer to "Preload Torque" Preload Torque.
2.Install the pinion sleeve shims and pinion sleeve assembly.
3.Rotate the companion flange at least 20 times to check for smooth operation of the bearing.

4.Measure the total preload with the preload gauge (A) [SST:
ST3127S000 (J-25765-A)].
Total Preload torque: Refer to "Preload Torque" Preload Torque.

CAUTION:
Preload torque differs before disassembly and after reassembly.
- If measured value is out of the specification, disassemble it to check and adjust each part. When measuring the total preload torque after the disassembly, measure it with the transfer case oil seals and gear ring oil seals removed, then install the oil seals.

COMPANION FLANGE RUNOUT

1.Fit a dial indicator onto the companion flange face (inner side of the propeller shaft mounting bolt holes).
2.Rotate the companion flange to check for runout.
Companion flange runout: Refer to "Companion Flange Runout" Companion Flange Runout.
3.Fit a test indicator to the inner side of the companion flange (socket diameter).
4.Rotate the companion flange to check for runout.
Companion flange runout: Refer to "Companion Flange Runout" Companion Flange Runout.
5.If the runout value is outside the repair limit, follow the procedure below to adjust.
a.While changing the phase between companion flange and drive pinion gear by 90� at a time, check runout and determine which phase angle minimizes the runout.
b.If the runout value is still outside of the limit after the phase has been changed, replace the companion flange.
c.If the runout is out of the specification after replacement of companion flange, adjust the assembly status of the pinion bearings and drive pinion gear, or replace the pinion bearings.

SELECTING ADJUSTING SHIM

Revision: March 20122013 Infiniti JX

Gear Ring Bearing Adjusting Shim (Transfer Case Side)
1.Measure F, H, I, R and U shown in the measurement points.
2.Convert the values F, H, I, R and U according to the standards below.

3.Check dimension Z on the drive gear side face.
NOTE:
Dimension Z indicates the difference between the optimum engagement and the standard dimensions in increments of 0.01 mm (0.0004 in) written on the drive gear side face.
4.Use the formula below to calculate gear ring bearing adjusting shim (transfer case side) thickness T1.

5.Select the gear ring bearing adjusting shim (transfer case side). For selecting adjusting shim, refer to the latest parts information.

CAUTION:
- Only one adjusting shim can be selected.
- If no adjusting shim with the calculated value is available, select the thicker and closest one.
Gear Ring Bearing Adjusting Shim (Adapter Case Side)
1.Measure F, H, J, K, U and V shown in the measurement points.
2.Convert the values F, H, J, K, U and V according to the standards below.
Revision: March 20122013 Infiniti JX

5.Select the gear ring bearing adjusting shim (adapter case side). For selecting adjusting shim, refer to the latest parts information.

CAUTION:
- Only one adjusting shim can be selected.
- If no adjusting shim with the calculated value is available, select the thicker and closest one.
Pinion Sleeve Shim
1.Measure L, N and Q shown in the measurement points.
2.Check the dimension S written on the gear end of the drive pinion.
NOTE:
The dimension S indicates the difference between the optimum engagement and the standard dimensions in increments of 0.01 mm (0.0004 in) written on the gear end of the drive pinion.
3.Use the formula below to calculate pinion sleeve shim thickness T3.

4.Select the pinion sleeve shim. For selecting shim, refer to the latest parts information.

CAUTION:
Only one pinion sleeve shim can be selected.