SYMPTOM
PROBLEM: REMEDY
UNEVEN BRAKES
See “SINGLE BRAKE DRAGGING OR LOCKED”
Restriction in hose:
Locate restriction and re-
move.
Worn brake linings:
Reline brakes.
Grease on linings:
Reline brakes.
Broken slack adjuster:
Replace slack adjuster.
Call Factory or see qualified Trailer/Brake
Technician
.
Leaking brake chamber diaphragm:
Replace
diaphragm.
BRAKES APPLY TOO SLOWLY
Brakes need adjusting or lubrication:
Adjust or
lubricate as needed.
Low air pressure in brake system (below 90
psi):
Check tractor air system.
Restricted tubing or hose:
Locate restriction and
remove.
Worn or broken relay valve:
Replace.
Call Factory or see qualified Trailer/Brake
Technician
.
BRAKES RELEASE TOO SLOWLY
Brakes need adjusting or lubrication:
Adjust or
lubricate as needed.
Brake rigging binding:
Align brakes or replace
bent parts.
Exhaust port of relay valve restricted or
plugged:
Replace valve.
ALL BRAKES DO NOT RELEASE
Air system improperly connected to tractor:
Tighten or adjust connections.
Brake valve on tractor is applied:
Release
brake.
Relay emergency valve in emergency position:
Check line pressure and check valve.
Restricted tubing or line:
Locate restriction and
remove.
Tractor protection valve failure:
Troubleshoot
tractor air system.
Parking brakes locked:
Troubleshoot air system.
Moisture in air system:
Check air system.
INSUFFICIENT BRAKES
Brakes need adjusting:
Adjust brakes.
Cams need lubricating:
Lubricate cams.
Brakes need relining:
Reline brakes.
Low air pressure:
Troubleshoot air system.
Relay emergency valve failure:
Replace.
Brakes overheated:
Stop and allow brakes to
cool, locate cause of overheating.
5-6
Summary of Contents for 336C
Page 3: ...MODEL 336C CAR CARRIER OPERATOR S MANUAL PURCHASED FROM DATE ADDRESS PHONE NO SERIAL NO...
Page 8: ......
Page 24: ...3 12 Figure 3 7 Lining Up the Over the Cab Deck Figure 3 8 Loading the Over the Cab Deck...
Page 28: ...3 16 Figure 3 11 Loading the Lower Deck...
Page 32: ...3 20 Figure 3 13 Rear Impact Guard and Antilock Brake System...
Page 40: ...4 6 Figure 4 3 336C Wiring Diagram...
Page 45: ...4 11 Figure 4 7 Checking Axle for Bend Figure 4 8 Examples of Camber...
Page 50: ...4 16 Figure 4 12 Axle and Brake Assembly...
Page 54: ...4 20 Figure 4 14 Outboard Mount Hub and Drum Figure 4 15 Inboard Mount Hub and Drum...
Page 59: ...4 25 Figure 4 19 Mounting Tires and Wheels Figure 4 20 Stud Tightening Sequence...
Page 70: ...NOTES 5 10...