Service Procedures

Motor and Pump Alignment

The pump assembly is serviced similar to the belt driven pump on the H-4 engine. The electric motor has serviceable brushes, similar to those in a starter motor.

Note: This system uses special hydraulic fluid. DEXRON II may be substituted in an emergency. Flush and replace with IDEMITSU fluid as soon as possible.

Note: The pump should be indexed as shown in order to facilitate proper reassembly.

Note: Detailed trouble-shooting and service procedures can be found in Section 4-3 of the service manual.

Self-Diagnostics and Failsafe

In the user mode, the driver is notified by the STEERING light whenever a system malfunction occurs in:

• The Signal Controller.
• The Power Controller.
• The Signal System (Sensors).
• The Power Source for the pump motor

Note: This is a highly reliable steering system. However, should an electrical component malfunction, it will always fail safe for “limp home.”