Maintenance, Service, and Repair
Steering Components
Page 4
Model B4XT-2500
TROUBLESHOOTING, HYDROSTATIC STEERING
The cause of most steering problems can be identified by the symptoms. The entire steering system must be analyzed by a
qualified technician before any components are removed. Use the following chart to identify probable cause of steering problems.
Symptoms:
Possible Cause:
Repair Procedure:
Slow or difficult Steering.
Worn or faulty pump.
Inspect power steering pump for proper operation.
Loss of Power Assist.
Faulty flow divider.
Flow divider is in the brake Hydro-Boost assembly. If the flow
divider is not functioning correctly then replace the
HydroBoost.
Faulty relief valve.
Replace the relief valve.
Faulty steering linkage.
Inspect steering linkage and steering knuckles for binding.
Overloaded steer axle.
Wandering:
Air in system.
Locate cause of air bleed and repair. Add oil to reservoir.
Vehicle Will Not Hold a Straight Line.
Steering control unit worn.
Replace the control unit.
Faulty steering linkage.
Inspect steering linkages for loose fittings.
Faulty steering cylinder.
Inspect the steering cylinder.
Front end out of alignment.
Realign front end.
Drifting:
Steering control unit worn.
Replace the control unit.
Vehicle Pulls to the Left or Right.
Faulty steering linkage.
Inspect steering linkages for loose fittings.
Front end out of alignment.
Realign front end.
Slipping:
Faulty steering control unit.
Replace the control unit.
Slow Rotation of Steering Wheel Will
Faulty steering cylinder.
Inspect the steering cylinder internal seals.
Not Turn Vehicle.
Intermittent Hard Steering or
Thermal shock
Thermal shock can occur if the system is operated for an
Steering Wheel Locks Up.
extended period without turning the steering wheel. In this
After lock, Steering Wheel May Spin
situation, there may be an large temperature differential
Free With No Steering Action.
between the fluid in the system and the fluid in the steering
control unit. If the steering wheel is turned quickly, the
steering may temporarily seize and could be followed with a
free wheeling steering wheel. Thermal shock could damage
the steering control unit.
Erratic Steering.
Air is system.
Locate cause of air bleed and repair. Add fluid to reservoir.
Faulty steering cylinder.
Inspect and repair or replace cylinder.
Damage due to thermal shock.
Replace control unit.
Sticking flow control spool.
Replace flow control valve.
Soft or Spongy Steering.
Air in system.
Locate cause of air bleed and repair. Add fluid to reservoir.
Low fluid level
Add fluid to reservoir.
Rotation of Steering Wheel Does Not
Broken steering column
Inspect the steering column assembly.
Turn Vehicle.
No fluid in steering control unit.
Start the steering pump. If this does not correct the problem
No Resistance in Steering.
then inspect the steering pump for proper operation.
Faulty steering control unit.
Replace the steering control unit.
Rotation of Steering Wheel does not
Faulty steering cylinder.
Inspect the steering cylinder internal seals.
Turn Vehicle.
Slight resistance Felt When Steering.
Excessive Free Play at Steering Wheel.
Loose steering wheel.
Inspect the steering wheel nut.
Faulty steering column
Inspect the steering column assembly for loose or worn
components.
Excessive Free Play at Steered Wheels.Faulty steering linkage.
Inspect the steering linkages for loose components.
Leaking cylinder seals.
Inspect the steering cylinder internal seals.
Binding or Poor Centering of
Faulty steering column.
Inspect steering column components.
Steering Wheel.
High back pressure in return line.
Inspect fluid return line for obstructions.
Debris in the fluid.
Flush the system and clean the steering control unit.
Steering Unit Locks Up.
Debris in the fluid.
Flush the system and clean the steering control unit.
Low pump pressure.
Inspect the power steering pump for proper operation.
Damage due to thermal shock.
Replace the steering control unit.
Worn or broken pin.
Replace the steering control unit.
Steering Wheel Moves by Itself.
Parts assembled incorrectly.
Reassemble properly.
Improper timing in steering unit.
Reassemble properly.
Hydraulic hoses not connected properly.
Reconnect hoses properly.
Vehicle Steers in Wrong Direction.
Hydraulic hoses not connected properly.
Reconnect hoses properly.
Steering Wheel “Kicks Back” at
Inlet check valve missing.
Install the check valve.
Start of Steering.
Instability / Hoses Jump.
Air in system.
Locate cause of air bleed and repair. Add fluid to reservoir.
Summary of Contents for TC-030-60L
Page 2: ......
Page 28: ...Maintenance Service and Repair Page 4 Lubrication Diagram...
Page 42: ...Notes...
Page 46: ...Notes...
Page 50: ...Notes...
Page 53: ...Maintenance Service and Repair Transmission Service C6 Page 3...
Page 54: ...Maintenance Service and Repair Transmission Service C6 Page 4...
Page 55: ...Maintenance Service and Repair Transmission Service C6 Page 5 Proof...
Page 56: ...Maintenance Service and Repair Transmission Service C6 Page 6...
Page 57: ...Maintenance Service and Repair Transmission Service C6 Page 7...
Page 58: ...Maintenance Service and Repair Transmission Service C6 Page 8...
Page 59: ...Maintenance Service and Repair Transmission Service C6 Page 9...
Page 60: ...Maintenance Service and Repair Transmission Service C6 Page 10...
Page 61: ...Maintenance Service and Repair Transmission Service C6 Page 11...
Page 62: ...Maintenance Service and Repair Transmission Service C6 Page 12...
Page 63: ...Maintenance Service and Repair Transmission Service C6 Page 13...
Page 64: ...Maintenance Service and Repair Transmission Service C6 Page 14...
Page 65: ...Maintenance Service and Repair Transmission Service C6 Page 15...
Page 66: ...Maintenance Service and Repair Transmission Service C6 Page 16...
Page 67: ...Maintenance Service and Repair Transmission Service C6 Page 17...
Page 68: ...Maintenance Service and Repair Transmission Service C6 Page 18...
Page 69: ...Maintenance Service and Repair Transmission Service C6 Page 19...
Page 70: ...Maintenance Service and Repair Transmission Service C6 Page 20...
Page 71: ...Maintenance Service and Repair Transmission Service C6 Page 21...
Page 72: ...Maintenance Service and Repair Transmission Service C6 Page 22...
Page 74: ...Maintenance Service and Repair Transmission Repair C6 Page 2...
Page 75: ...Maintenance Service and Repair Transmission Repair C6 Page 3...
Page 76: ...Maintenance Service and Repair Transmission Repair C6 Page 4...
Page 77: ...Maintenance Service and Repair Transmission Repair C6 Page 5...
Page 78: ...Maintenance Service and Repair Transmission Repair C6 Page 6...
Page 79: ...Maintenance Service and Repair Transmission Repair C6 Page 7...
Page 80: ...Maintenance Service and Repair Transmission Repair C6 Page 8...
Page 81: ...Maintenance Service and Repair Transmission Repair C6 Page 9...
Page 82: ...Maintenance Service and Repair Transmission Repair C6 Page 10...
Page 83: ...Maintenance Service and Repair Transmission Repair C6 Page 11...
Page 84: ...Maintenance Service and Repair Transmission Repair C6 Page 12...
Page 85: ...Maintenance Service and Repair Transmission Repair C6 Page 13...
Page 86: ...Maintenance Service and Repair Transmission Repair C6 Page 14...
Page 87: ...Maintenance Service and Repair Transmission Repair C6 Page 15...
Page 88: ...Maintenance Service and Repair Transmission Repair C6 Page 16...
Page 89: ...Maintenance Service and Repair Transmission Repair C6 Page 17...
Page 90: ...Maintenance Service and Repair Transmission Repair C6 Page 18...
Page 91: ...Maintenance Service and Repair Transmission Repair C6 Page 19...
Page 92: ...Maintenance Service and Repair Transmission Repair C6 Page 20...
Page 93: ...Maintenance Service and Repair Transmission Repair C6 Page 21...
Page 94: ...Maintenance Service and Repair Transmission Repair C6 Page 22...
Page 95: ...Maintenance Service and Repair Transmission Repair C6 Page 23...
Page 96: ...Notes...
Page 109: ...Maintenance Service and Repair Drive Axle Page 13 Planetary Wheel End...
Page 123: ...TABLE OF CONTENTS Chapter Suspension Front Suspension 2 Rear Suspension 2 Hardware Torque 3 12...
Page 126: ...Notes...
Page 130: ...Notes...
Page 138: ...Notes...
Page 142: ...Wire Diagrams Wire Diagrams Page 4 HYDRAULIC DIAGRAM...
Page 174: ...Notes...
Page 181: ......