Page 713 - Workshop Manual - Aumark (BJ1051)

25-3
Rear axle- Rear wheel hub with brake drum assembly

Malfunction symptoms table

Use the table below to help you find the cause of the malfunction. Sequence number indicate the
probability of the cause of the malfunction. Inspect each part in order. If necessary, replace these parts.

Symptom Suspect Area Reference
Continuous
1. Planet gear thrust washer (Worn) chapter 25 rear axle-differential assembly, overhaul
knocking sound
2. Planet gear (Worn) chapter 25 rear axle-differential assembly, overhaul
(Turning)
Continuous 1. Driving gear and driven gear (The chapter 25 rear axle–main reducing gear assembly,
knocking sound clearance is too big or worn) inspection
(High-speed 2. Driving gear and driven gear (The chapter 25 rear axle–main reducing gear assembly,
driving) clearance is too small) inspection
1. Driving gear and driven gear (The chapter 25 rear axle–main reducing gear assembly,
Continuous
clearance is too big or worn) inspection
knocking sound
2. Driving gear and driven gear (The chapter 25 rear axle–main reducing gear assembly,
(Speeding up)
clearance is too small) inspection
1. Half axle spline (The clearance is too chapter 25 rear axle–differential assembly,
big) inspection
Intermittent
2. Driving gear and driven gear (The chapter 25 rear axle–main reducing gear assembly,
knocking sound
clearance is too big or worn) inspection
(Driving)
3. Rear-axle housing (Mixed with chapter 25 rear axle – rear axle gear oil,
impurities) replacement
1. Air vent (Blocked) chapter 25 rear axle–rear axle assembly,
2. Bolt (Loose or worn) precautions
Oil leakage of 3. Rear axle gear oil (Too much) chapter 25 rear axle–rear axle gear oil, replacement 25
rear-axle 4. Seal washer (Damaged or does not chapter 25 rear axle–rear axle assembly, on-vehicle
housing work) inspection
5. Rear-axle housing (Cracked or
blistered)
1. Rear axle gear oil (Too much) chapter 25 rear axle–rear axle gear oil, replacement
The gear oil
2. Rear wheel hub outer oil seal chapter 25 rear axle–rear wheel hub with brake
soaks in the
(Damaged) drum assembly, overhaul
rear wheel hub
3. Rear wheel hub inner oil seal chapter 25 rear axle–rear wheel hub with brake
and brake
(Damaged) drum assembly, overhaul
drum.

1. Rear axle gear oil (Too little) chapter 25 rear axle–rear axle gear oil, replacement
2. Driving gear and driven gear (The chapter 25 rear axle–main reducing gear assembly,
clearance is too small) inspection
Overheating of
3. Differential bearing (Too tight) chapter 25 rear axle–differential assembly, overhaul
rear axle
4. Differential oil seal (Too tight) chapter 25 rear axle –differential assembly,
5. Rear wheel brake (Grabbed) overhaul
chapter 26 service brake-rear wheel brake, overhaul

Page 713