SCREEN AS 2013818 - Caterpillar

Probable Cause
The sleeve in the steering metering pump jams and the spool in the steering metering pump jams due to foreign material.
Wrong oil line connections on the steering metering pump
Broken centering springs in the steering metering pump
Damaged centering springs in the steering metering pump
Illustration 2 g00533400
Timing of metering pump drive (1) Pin (2) Drive (3) Timing Mark (4) Gerotor star valleys (A) Reference Line (B) Reference Line (C) Reference LineProblem : The steering piston pump does not destroke to standby pressure
Probable Cause
Sticking spool in the flow compensator valve
High pressure setting of the flow compensator valve
Illustration 3 g00533400
Timing of metering pump drive (1) Pin (2) Drive (3) Timing Mark (4) Gerotor star valleys (A) Reference Line (B) Reference Line (C) Reference Line
Timing mark (3) that is on drive (2) must fall on the parallel line between any two gerotor star valleys (4) .Note: Reference lines (A) , (B) and (C) are parallel.Problem : Soft steering
Probable Cause
Air in the steering hydraulic circuit
Low oil level in steering hydraulic tankCheck The Warning System (Steering System)
Illustration 4 g01322367
(1) Instrument cluster (2) Steering lock switch (3) Adviser system (4) Secondary steering and parking brake release switch (5) Secondary brake lever
Put the gear selector in the PARK position.
Turn the engine start switch key to the ON position.
The Caterpillar Monitoring System action light should flash and the action alarm should sound for approximately three seconds. Secondary steering indicator is activated. The electric motor for the secondary steering must operate for three seconds.
The secondary steering pump will operate when the secondary steering indicator light is ON. When the secondary steering system is used to steer the machine, more steering effort will be needed. The primary steering system will require less steering effort.
Start the engine. Secondary steering warning indicator and the action alarm should turn off after three seconds.
Secondary steering indicator should activate. The steering system must operate in the same way as normal steering operation. Secondary steering warning indicator, action light, and the action alarm should not activate.
turn the engine start switch key to the OFF position.
Place the Transmission selector lever to the PARK position in order to apply the parking brakes.Problem : The monitoring system, the lights, the action alarm, and the starter does not operate
Probable Cause
The battery disconnect switch is in the OFF position.
Low battery voltageProblem : The secondary steering warning indicator, the action light, and the action alarm are activated after the engine starts with the secondary steering indicator and the electric motor is OFF.
Probable Cause
The Machine Electronic Control Module (Chassis ECM) is not receiving voltage from the "R" terminal on the alternator.
Bad Cat Data Link
Bad Chassis ECM
Bad Caterpillar Monitoring SystemProblem : The secondary steering warning indicator, the action light, the action alarm, the secondary steering indicator, and the electric motor are ON.
Probable Cause
Bad steering pump oil pressure switch
Low oil in the steering hydraulic tank
Bad Chassis ECMProblem : The secondary steering warning indicator and the action light flashes until the engine starts with the secondary steering indicator and the electric motor are OFF.
Probable Cause
Open circuit or shorted