Advertisement
Section 6
6.7 TROUBLESHOOTING
Table 6.2
Troubleshooting
FAULT
Problem with mov-
ing off
Noise in axle hubs
Poor reliability of
braking system
Excessive heating
of axle hubs
Incorrect hydraulic
system operation
6.14
PRONAR T700M/1
CAUSE
Brake system lines discon-
nected
Applied parking brake
Damaged pneumatic sys-
tem connection lines
Leaking connections
Control valve or braking
force regulator damaged
Excessive bearing slack-
ness
Damaged bearings
Damaged hub parts
Insufficient pressure in the
system
Incorrect main or parking
brake adjustment
Worn brake linings
Improper hydraulic oil vis-
cosity
REMEDY
Connect brake lines (applies to pneumatic
systems)
Release parking brake.
Replace.
Tighten, replace washers or seal sets,
replace lines.
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 lines 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 nec-
essary change oil in tractor or in trailer.
Maintenance
Advertisement
