HOSE BK 4568483 - Caterpillar

Steering:
Problem 1: Machine will not turn in one direction.
Probable Cause:1. Adjustment of steering control linkage not correct.2. Too much leakage in steering clutch control valve.3. Steering clutch discs or plates have wear or damage.4. Seals of steering clutch piston have damage.Problem 2: Machine will not turn in either direction.
Probable Cause:1. Low oil pressure to steering clutch control valve.2. Adjustment of the relief valve not correct.3. Leaks in relief valve or control valve.4. Adjustments of control linkages for the steering clutches and brakes not correct.5. Steering clutch or clutches not releasing.Problem 3: Machine moves in either direction when both steering clutches are engaged.
Probable Cause:1. Adjustments of the control linkages for the steering clutches and brakes not correct.2. Steering clutch discs or plates have wear or damage.3. Steering clutch springs that are weak or have damage.4. Bolts that hold the steering clutch springs are broken.5. Splines on the steering clutch hubs have damage.Problem 4: Slow steering.
Probable Cause:1. Control linkages for the steering clutches and brakes loose or adjustment not correct.2. Brake linings have wear or damage.3. Low oil pressure to steering clutch control valve.4. Splines on steering clutch hubs have damage.5. Leaks in steering clutch control valve.Operation Checks
When checks are made while the machine is in operation, make sure only one operator is on the machine. Keep other personnel away from the machine. Make sure checks are done in a flat open area.
With the engine running, move the transmission selection lever to all speed positions and the control lever for the flywheel clutch to all positions.Operate the machine in each direction and in all speeds. Make note of all noises that are not normal and find their sources. If the operation is not correct, make reference to the Troubleshooting for "problems" and "probable causes".Power Train/Hydraulic System
Power Train Hydraulic System Schematic (SA version)
(1) Mechanism [hydraulic control (left brake)]. (2) Valve [relief (steering clutch controls)]. (3) Valve [hydraulic control (steering clutches)]. (4) Filter (oil). (5) Mechanism [hydraulic control (right brake)]. (6) Cooler (oil). (7) Case (transmission). (8) Reservoir (steering clutch and bevel gear case). (9) Valve [regulation (transmission lubrication)]. (10) Screen (magnetic). (11) Pump [oil (two-section)]. (12) Housing (flywheel clutch). (A) Pump [oil (transmission)]. (B) Piston (left steering clutch). (C) Piston (right steering clutch). (D) Booster (left brake). (E) Booster (right brake). (F) Lubrication (transmission). (G) Pump [oil (transmission)].
Power Train Hydraulic System Schematic (SR version)
(1) Mechanism [hydraulic control (left brake)]. (2) Valve [relief (steering clutch controls)]. (3) Valve [hydraulic control (steering clutches)]. (4) Filter (oil). (5) Mechanism [hydraulic control (right brake)]. (6) Cooler (oil). (7) Case (transmission). (8) Reservoir (steering clutch and bevel gear case). (9) Valve [regulation (transmission lubrication)]. (10) Screen (magnetic). (11) Pump [oil (scavenge section)]. (12) Housing (flywheel clutch). (13) Pump [oil (circulating section)]. (A) Pump [oil (transmission)]. (B) Piston (left steering clutch). (C) Piston (Right steering clutch). (D) Booster (left brake). (E) Booster (right brake). (F) Lubrication (transmission). (G) Pump [oil (transmission)].
When tests are to be done in a closed area, activate the brakes and use blocks to