Troubleshooting - PRONAR PT512 Operator's Manual

CHAPTER 5

5.13 TROUBLESHOOTING

TABLE 5.7 TROUBLESHOOTING
FAULT
Problem with moving off
Noise in drive axle hub
Poor efficiency of braking
system
Excessive heating of
drive axle hubs
Incorrect operation of the
hydraulic system
CAUSE
Brake system pneumatic
lines not connected
Parking brake engaged
Damaged pneumatic
system connection lines
Leaking connections
Damaged control valve or
braking force regulator
Excessive play in bearings
Damaged bearings
Damaged hub elements
Insufficient pressure in the
system
Incorrect adjustment of
main or parking brake
Worn brake linings
Improper hydraulic oil
viscosity
5.39
REMEDY
Connect brake lines (applies to
pneumatic systems)
Release parking brake.
Replace.
Tighten, replace washers or seals,
replace lines.
Check the valve, repair or replace.
Check the play 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 the
tractor. Repair or replace.
Damaged brake valve in the
tractor. Repair or replace.
Leaks in the system. Check
system for tightness
Adjust positions of expander arms.
Replace brake shoes.
Check oil quality, make sure that
the oil in both machines is at the
same type. If necessary, change
oil in a tractor or in the trailer.
Pronar PT512