Tyres / Wheels / Axle
8
188
Troubleshooting guide
Fault
Possible causes
Remedy
The trailer squeaks as you drive along / worn bearing.
Bearing setting too loose or too tight.
Foreign body in axle bearing.
Have faults rectified by a specialist workshop.
Insufficient lubrication of axles.
Lubricate the axles as specified by the axle manufacturer.
Overloading the axles.
Comply with the axle loads valid for your trailer.
Suspension of axle on chassis is loose.
Check the connection elements of the axle with the
chassis.
Tighten the screw connections.
Deformed wheel bolts / wheel screws.
Wheel nuts / wheel bolt tightened with incorrect tightening
torque - too tight.
Wheel nuts / wheel bolts not properly re-tightened.
Replace the wheel bolts / wheel nuts / wheel screws and
the wheel if required.
Tighten the wheel nuts / wheel bolts using the specified
tightening torque - do not use an impact wrench.
Have faults rectified by a specialist workshop.
Tyres are worn on one side.
Tyres are unevenly pumped up.
Check the tyre pressure on all tyres.
Fill all tyres with the specified tyre pressure.
Tyre is faulty - losing air.
Replace the faulty tyre as quickly as possible.
A wheel shock absorber is faulty.
Replace the faulty wheel shock absorber.
Tyres are different ages or different types of tyre have been
used.
Replace different tyres with tyres of the same age and
type.
Tyre scraping / knocking on mudguard.
Incorrect wheel size fitted - too large.
Compare the size of the wheel fitted to the specification in
your vehicle documents.
Replace any wheels which have been fitted incorrectly
with permitted wheel sizes.
Trailer overloaded.
Load incorrectly distributed.
Distribute the load evenly up to the max. permissible
gross weight.
Summary of Contents for 1000 Series
Page 1: ...GENERAL CAR Program PART 1 OPERATING MANUAL humbaur com 1000 8400 SERIES EN ...
Page 9: ...1 7 Safety ...
Page 21: ...2 19 General information ...
Page 31: ...3 29 Operation ...
Page 67: ...3 65 Operation Trailer safety ...
Page 75: ...4 73 Chassis ...
Page 103: ...5 101 Body ...
Page 134: ...Cover net 5 132 Body ...
Page 135: ...6 133 Electrical system ...
Page 145: ...7 143 Testing care and maintenance ...
Page 185: ...8 183 Troubleshooting guide ...
Page 194: ...Hydraulics 8 192 Troubleshooting guide ...
Page 195: ...9 193 Proof of inspection ...