Front Final Drive: Specifications Infiniti FX45 I рестайлинг

Total Preload Torque

1. Rotate drive pinion back and forth 2 to 3 times to check for unusual noise and rotation malfunction.
2. Rotate drive pinion at least 20 times to check for smooth operation of the bearing.
3. Measure total preload with preload gauge. Tool number A: ST3127S000 (J-25765-A) Total preload torque: 1.56 - 2.65 N.m (0.16 - 0.27 kg-m, 14 - 23 in-lb)

Scheme 1

Note. Total preload torque = Pinion bearing preload torque + Side bearing preload torque

1. If measured value is out of the specification, disassemble it to check and adjust each part. Adjust the pinion bearing preload and side bearing preload. Adjust the pinion bearing preload first, then adjust the side bearing preload. When the preload torque is large On pinion bearings: Decrease the drive pinion bearing adjusting washer and drive pinion adjusting washer thickness. Refer to " «DRIVE PINION BEARING ADJUSTING WASHER»(ref-282597-S12563006812008040500000) " and " «DRIVE PINION ADJUSTING WASHER»(ref-282597-S18565372052008040500000) ". On side bearings: Increase the side bearing adjusting shim thickness. Refer to " «SIDE BEARING ADJUSTING SHIM»(ref-282597-S08996160912008040500000) ". When the preload torque is small On pinion bearings: Increase the drive pinion bearing adjusting washer and drive pinion adjusting washer thickness. Refer to " «DRIVE PINION BEARING ADJUSTING WASHER»(ref-282597-S12563006812008040500000) " and " «DRIVE PINION ADJUSTING WASHER»(ref-282597-S18565372052008040500000) ". On side bearings: Decrease the side bearing adjusting shim thickness. Refer to " «SIDE BEARING ADJUSTING SHIM»(ref-282597-S08996160912008040500000) ".

Scheme 2

1. Remove carrier cover. Refer to " «DIFFERENTIAL ASSEMBLY»(ref-282597-S14547537572008040500000) ".
2. Fit a dial indicator to the drive gear back face.
3. Rotate the drive gear to measure runout. Runout limit: 0.05 mm (0.0020 in) If the runout is outside of the repair limit, check drive gear assembly condition; foreign material may be caught between drive gear and differential case, or differential case or drive gear may be deformed, etc. CAUTION: Replace drive gear and drive pinion gear as a set.

Scheme 3

Scheme 4

1. Remove carrier cover. Refer to " «DIFFERENTIAL ASSEMBLY»(ref-282597-S14547537572008040500000) ".
2. Apply red lead to drive gear. CAUTION: Apply red lead to both the faces of 3 to 4 gears at 4 locations evenly spaced on drive gear.
3. Rotate drive gear back and forth several times, check drive pinion gear to drive gear tooth contact. CAUTION: Check tooth contact on drive side and reverse side.
4. If tooth contact is improperly adjusted, follow the procedure below to adjust the pinion height (dimension X).

Scheme 5

Scheme 6

1. If the tooth contact is near the face (face contact), or near the heel (heel contact), thicken pinion height adjusting washers to move drive pinion closer to drive gear. Refer to " «PINION HEIGHT ADJUSTING WASHER»(ref-282597-S31992635092008040500000) ".
2. If the tooth contact is near the flank (flank contact), or near the toe (toe contact), thin pinion height adjusting washers to move drive pinion farther from drive gear. Refer to " «PINION HEIGHT ADJUSTING WASHER»(ref-282597-S31992635092008040500000) ".

Scheme 7

Scheme 8

1. Remove carrier cover. Refer to " «DIFFERENTIAL ASSEMBLY»(ref-282597-S14547537572008040500000) ".
2. Fit a dial indicator to the drive gear face to measure the backlash. Backlash: 0.10 - 0.15 mm (0.0039 - 0.0059 in)

1. If the backlash is outside of the specified value, change the thickness of side bearing adjusting washer.

When the backlash is large

Decrease side bearing adjusting washer thickness. Refer to " SIDE BEARING ADJUSTING WASHER ".

When the backlash is small

Increase side bearing adjusting washer thickness.

Refer to " SIDE BEARING ADJUSTING WASHER ".

General Specifications

GENERAL SPECIFICATIONS

PRELOAD TORQUE

Unit: N.m (kg-m, in-lb)

PRELOAD TORQUE SPECIFICATIONS