drive axle Flashcards

failures and repairs.

1
Q

Excessive pinion to ring gear backlash

A

Noise on drive/Adjust

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2
Q

Worn pinion and ring gear

A

noise on drive/Replace

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3
Q

worn pinion bearings

A

noise on drive/ Replace

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4
Q

loose pinion bearing

A

noise on drive/adjust

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5
Q

excessive pinion end play

A

noise on drive/ Adjust

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6
Q

Worn differential bearings

A

noise on drive/ Replace

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7
Q

Loose differential bearings

A

noise on drive/Adjust

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8
Q

Excessive ring gear run out

A

noise on drive/replace

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9
Q

Low lubricant level

A

noise on drive/ Replenish

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10
Q

Wrong grade lubricant

A

noise on drive/Replace

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11
Q

Bent axle hoising

A

noise on drive/Replace

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12
Q

Axle noises heard on drive will usually be heard on coast although not as loud

A

noise on coast/ Adjust/Replace

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13
Q

Pinion and ring gear too tight ( audible when decelerating and disappears when driving)

A

noise on coast/Adjust

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14
Q

Warped ring gear

A

Intermittent noise/Replace

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15
Q

Loose differential case bolts

A

Intermittent noise/Tighten

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16
Q

Flat spot on pinion or ring gear teeth

A

Constant noise/ Replace

17
Q

Flat spot on bearings

A

Constant noise/ Replace

18
Q

Worn pinion splines

A

Constant noise/ Replace

19
Q

Worn axle shaft dowel holes

A

Constant noise/ Replace

20
Q

Worn hub studs

A

Constant noise/ Replace

21
Q

bent axle shaft

A

Constant noise/ Replace

22
Q

Worn differential side gears and pinions

A

noise on turns/Replace

23
Q

worn differential spider

A

noise on turns/Replace

24
Q

worn differential thrust washers

A

noise on turns/Replace

25
Worn axle shaft splines
noise on turns/Replace
26
Fracture of ring gear teeth and tooth toe.
Shock impact loading incorrect adjustment. Correction: Replace as match set, follow adjustment procedure.
27
Pitted drive pinion Problem and Correction
Extremely severe service Insufficient lubrication. Correction: replace as match set, use correct lubrication and interval schedule.
28
scored or worn thrust washer surfaces Problem and Correction
Insufficient/ improper/contaminated lubrication. Correction: replace any scored/worn washer that is .005" thinner then new one. use correct lubricant and proper level and interval schedule.
29
Bent axle housing Problem and cause
vehicle overloading vehicle accident shock loading. Correction: Replace axle housing.
30
Fractured axle shaft at flange Problem and Correction
loose wheel bearing. Bent axle housing Loose shaft to wheel hub bolts. Correction: replace the shaft. check housing distortion, make certain wheel bearings aren't worn or misadjusted