Major 1150 Slurry Vac, Operator'S Manual & Parts List

Page: 45 / 89

41 www.major-equipment.com
Axle Troubleshooting
Fault Possible Cause
Excessive brake drum wear
Overheating through excessive braking.
Contaminated brake linings.
Grease or oil leaks
Incorrect assembly or damaged seal.
Seal lips distorted (low loader).
Damaged / worn hub cap gasket.
Hubometer stem leaks.
Loose wheels
Incorrect torque.
Worn cones/bolts.
Mismatched wheels and fasteners.
Damaged wheels.
Excessive paint on hub.
Hubs overheating
Bearing adjustment too tight.
Insufficient lubrication.
Low loader on heavy duty operation.
Brakes binding or dragging
Failed brake shoe return spring.
Badly worn bearings
Incorrectly adjusted brakes
Brakes not releasing properly
Faulty valve in brake system
Faulty trailer air coupling
Bearing failure
Abrasive contamination.
Overheating due to lack of end float.
Forcible assembly.
Incorrect end float
Corrosion
Water, acid and corrosive materials formed by deterioration of lubricant, will produce a reddish-
brown coating and small etched holes over outer and exposed surfaces of race. Corrosive
oxides also act as a lapping agent.
Brinelling is caused by improper assembly or removal, usually hammering with off-centre
blows. Use tubes, preferably under a press or extractor.
Fatigue
All bearings are subject to fatigue and must be replaced eventually. Your own operating
experience will dictate mileage replacement of bearings showing only normal wear.
Shaft fits
Excessive looseness under load is very objectionable because it produces a creeping or
slipping of the inner ring on the rotating shaft. This causes the surface metal of the shafts to
scrub or wear off.
When play or looseness even 0.0025 mm exists between the bearing and shaft, there is a very
powerful force tending to rotate the inner race on the shaft.
The brakes don’t function or make
noise
Brake lining has worn out. Replace the brake lining.
Wheel bearing is adjusted incorrectly Adjust the wheel bearing.