Taylor-Dunn C0-T50-80, Руководство по обслуживанию и запасным частям

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Steering
Page 49
MC-T50E-02
C0-T50-80
Symptoms: Possible Cause: Repair Procedure:
Slow or difficult Steering. Worn or faulty pump. Inspect hydraulic 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 fluid 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 hydraulic 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.
TROUBLESHOOTING
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.