CHAPTER 5
Pronar T683P
5.39
5.12
TROUBLESHOOTING
TABLE 5.6.
Faults and how to remove them
FAULT
CAUSE
REMOVAL METHOD
Brake system lines not
connected
Connect the brake lines (applies to
pneumatic system).
Parking brake applied
Release the parking brake.
Pneumatic connection lines
damaged
Replace.
Connection leakage
Tighten, replace washers or sealing sets,
replace hoses.
Trouble with
starting
Defective control valve or
braking force regulator
Check valve, repair or replace.
Excessive bearing looseness
Check the clearance and adjust if
necessary
Damaged bearings
Replace bearings
Noise in the hub
of the axle
Damaged hub components
Replace
Low braking
efficiency
System pressure too low
Check the pressure on the pressure gauge
on the tractor, wait for the compressor to
fill the tank to the required pressure.
Damaged tractor air compressor. Repair or
replace.
Damaged brake valve on the tractor.
Repair or replace.
System leakage. Check systems for leaks.
Incorrectly adjusted service
or parking brake
Adjust expander arm positions
Excessive
heating of the
axle hub
Worn brake pads
Replace brake shoes.
Incorrect
hydraulic
system
operation
Incorrect hydraulic oil
viscosity
Check the oil quality, make sure that the
oils in both machines are of the same
grade. If necessary, change the oil in the
tractor and/or trailer
Summary of Contents for T683P
Page 2: ......
Page 6: ......
Page 11: ...CHAPTER 1 GENERAL ...
Page 25: ...CHAPTER 2 SAFETY OF USE ...
Page 42: ...Pronar T683P CHAPTER 2 2 18 FIGURE 2 3 Arrangement of information and warning stickers ...
Page 43: ...CHAPTER 3 CONSTRUCTION AND PRINCIPLE OF OPERATION ...
Page 62: ...Pronar T683P CHAPTER 3 3 20 ...
Page 63: ...CHAPTER 4 RULES OF USE ...
Page 95: ...CHAPTER 5 TECHNICAL SUPPORT ...
Page 125: ...CHAPTER 5 Pronar T683P 5 31 FIGURE 5 12 Trailer lubrication points part 1 ...
Page 126: ...Pronar T683P CHAPTER 5 5 32 FIGURE 5 13 Trailer lubrication points part 2 ...
Page 135: ...NOTES ...
Page 136: ... ...
Page 138: ......