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Pronar T680
TROUBLESHOOTING
TABLE 5.8
Troubleshooting
FAULT
Problem with moving off.
Problem with moving off.
Noise in wheel axle hub.
Poor efficiency of braking
system.
Overheating of axle hubs.
Incorrect hydraulic
system operation.
CAUSE
Brake system conduits not
connected
Applied parking brake
Damaged pneumatic
system connection conduits
Leaking connections
Control valve or braking
force regulator damaged
Excessive bearing
slackness
Damaged bearings
Damaged hub parts
Insufficient pressure in the
system
Incorrect main or parking
brake adjustment
Worn brake linings
Improper hydraulic oil
viscosity
5.44
REMEDY
Connect brake conduits (applies
to pneumatic systems)
Release parking brake.
Replace.
Tighten, replace washers or seal
sets, replace conduits.
Check valve, repair or replace.
Check slackness and adjust if
needed
Replace bearings
Replace
Check pressure on tractor
pressure gauge, wait till
compressor fills tank to required
pressure.
Damaged air compressor in
tractor Repair or replace.
Damaged brake valve in tractor.
Repair or replace.
Leaking system conduits or
connections. Check system for
tightness.
Regulate positions of expander
arms
Change brake shoes
Check oil quality, make sure that
the oil in both machines is of the
same type. If necessary change
SECTION 5
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