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Contents Section: Front Final Drive (F160A) All sections

BACKLASH Infiniti FX50 II рестайлинг

Front Final Drive (F160A) 16 illustrations ~997 words

BACKLASH

Before inspection and adjustment, drain gear oil.

Scheme 113

Scheme 113: BACKLASH
Scheme 113: BACKLASH
  1. Remove carrier cover. Refer to " «DISASSEMBLY»(ref-524017-S40711610412013012500000) ".
  2. Fit a dial indicator to the drive gear face to measure the backlash. Standard Backlash: Refer to " «BACKLASH»(ref-524017-S32283085472013012500000) ". 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. For selecting adjusting washer, refer to the latest parts information. When the backlash is small: Increase side bearing adjusting washer thickness. For selecting adjusting washer, refer to the latest parts information.
  1. Clean up the disassembled parts.
  2. If the gear teeth never mesh or line-up correctly, determine the cause and adjust or replace as necessary.
  3. If the gears are worn, cracked, damaged, pitted or chipped (by friction) noticeably, replace with new drive gear and drive pinion as a set.
  1. Clean up the disassembled parts.
  2. If any chipped (by friction), pitted, worn, rusted or scratched marks, or unusual noise from the bearing is observed, replace as a bearing assembly (as a new set).
  1. Clean up the disassembled parts.
  2. If any cracks or damage on the surface of the tooth is found, replace.
  3. If any worn or chipped mark on the contact sides of the thrust washer is found, replace.
  1. Clean up the disassembled parts.
  2. If it is chipped (by friction), damaged, or unusually worn, replace.
  1. Whenever disassembled, replace.
  2. If wear, deterioration of adherence (sealing force lips), or damage is detected on the lips, replace them.
  1. Clean up the disassembled parts.
  2. If any wear or crack on the contact sides of the differential case is found, replace.
  1. Clean up the disassembled parts.
  2. If any chipped mark [about 0.1 mm, (0.004 in)] or other damage on the contact sides of the lips of the companion flange is found, replace.

Scheme 114

Scheme 114: Exploded View
Scheme 114: Exploded View

Refer to " COMPONENTS " for symbols not described above.

Scheme 115

Scheme 115
Scheme 115

Refer to " COMPONENTS " for symbols not described above.

Scheme 116

Scheme 116: Disassembly
Scheme 116: Disassembly

Scheme 117

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Scheme 117

Scheme 118

Scheme 118
Scheme 118

Scheme 119

Scheme 119
Scheme 119

Scheme 120

Scheme 120
Scheme 120

Scheme 121

Scheme 121
Scheme 121
  1. Remove differential case assembly. Refer to " «DISASSEMBLY»(ref-524017-S40711610412013012500000) ".
  2. Remove drive pinion lock nut with a flange wrench (commercial service tool).
  3. Put matching mark (B) on the end of drive pinion. The matching mark should be in line with the matching mark (A) on companion flange (1). CAUTION: For matching mark, use paint. Never damage companion flange and drive pinion. NOTE: The matching mark on the final drive companion flange indicates the maximum vertical runout position. When replacing companion flange, matching mark is not necessary.
  4. Remove companion flange using the suitable puller (commercial service tool).
  5. Press drive pinion assembly out of gear carrier. CAUTION: Never drop drive pinion assembly.
  6. Remove front oil seal.
  7. Remove pinion front bearing inner race.
  8. Remove drive pinion bearing adjusting washer and drive pinion adjusting washer.
  9. Remove pinion rear bearing inner race and pinion height adjusting washer with replacer (A) (commercial service tool).
  10. Tap pinion front/rear bearing outer races uniformly a brass rod or equivalent to removed. CAUTION: Never damage gear carrier.

Scheme 122

Scheme 122: Assembly
Scheme 122: Assembly

Scheme 123

Scheme 123
Scheme 123

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Scheme 124

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Scheme 125

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Scheme 127

Scheme 128

Scheme 128
Scheme 128
  1. Install pinion front and rear bearing outer races using drift (A) [SST: ST37820000 (-)]. CAUTION: At first, using a hammer, tap bearing outer race until it becomes flat to gear carrier. Never reuse pinion front and rear bearing outer race.
  2. Temporarily install pinion height adjusting washer (1). When hypoid gear set has been replaced Select pinion height adjusting washer. Refer to " «ADJUSTMENT»(ref-524017-S14911857112013012500000) ". When hypoid gear set has been reused Temporarily install the removed pinion height adjusting washer or same thickness washer to drive pinion. CAUTION: Pay attention to the direction of pinion height adjusting washer. (Assemble as shown in the figure) Never reuse pinion rear bearing inner race.
  3. Install pinion rear bearing inner race (1) to drive pinion with the drift (A) [SST: ST30032000 (J-26010-01)].
  4. Temporarily assemble removed drive pinion adjusting washer and drive pinion bearing adjusting washer or same thickness of them to drive pinion.
  5. Apply gear oil to pinion rear bearing, and assemble drive pinion into gear carrier.
  6. Apply gear oil to pinion front bearing, and assemble pinion front bearing inner race to drive pinion assembly. CAUTION: Never reuse pinion front bearing inner race.
  7. Using suitable spacer (A) (commercial service tool), press the pinion front bearing inner race to drive pinion as far as drive pinion nut can be tightened.
  8. Adjust pinion bearing preload. If necessary, select the appropriate drive pinion adjusting washer and drive pinion bearing adjusting washer. Refer to " «ADJUSTMENT»(ref-524017-S14911857112013012500000) ".
  9. Using the drifts (A and B), install front oil seal as shown in figure. CAUTION: Never reuse oil seal. When installing, never incline oil seal. Apply multi-purpose grease onto oil seal lips, and gear oil onto the circumference of oil seal.
  10. Install companion flange. NOTE: When reusing drive pinion, align the matching mark (B) of drive pinion with the matching mark (A) of companion flange, and then install companion flange (1).
  11. Apply anti-corrosion oil to the thread and seat of new drive pinion lock nut, and temporarily tighten drive pinion lock nut to drive pinion, using flange wrench (commercial service tool). CAUTION: Never reuse drive pinion lock nut.
  12. Tighten to drive pinion lock nut, while adjusting pinion bearing preload torque, using preload gauge [SST: ST3127S000 (J-25765-A)]. Standard Pinion bearing preload: Refer to " «PRELOAD TORQUE»(ref-524017-S26889915072013012500000) ". CAUTION: Adjust to the lower limit of the drive pinion lock nut tightening torque first. After adjustment, rotate drive pinion back and forth 2 to 3 times to check for unusual noise, rotation malfunction, and other malfunctions.
  13. Install differential case assembly. Refer to " «ASSEMBLY»(ref-524017-S25328873252013012500000) ". CAUTION: Never install carrier cover yet.
  14. Check and adjust drive gear runout, tooth contact, drive gear to drive pinion backlash, and companion flange runout. Refer to " «ADJUSTMENT»(ref-524017-S06147879862013012500000) " and " «ADJUSTMENT»(ref-524017-S14911857112013012500000) ". Recheck above items. Readjust the above description, if necessary.
  15. Check total preload torque. Refer to " «ADJUSTMENT»(ref-524017-S06147879862013012500000) ".
  16. Install carrier cover. Refer to " «ASSEMBLY»(ref-524017-S25328873252013012500000) ".