AXLE & TRANSMISSION AR 1124976 - Caterpillar

At operating temperature, the hydraulic oil tank is hot and under pressure. Hot oil can cause burns. Remove the fill cap on the hydraulic oil tank only when the engine is stopped, and the fill cap is cool enough to touch with your bare hand.
1. Release the pressure in the hydraulic system by slowly loosening the fill cap located on top of the hydraulic oil tank.2. Remove eight bolts (2). Remove console cover (1).3. Put identification marks on four hoses (6) for installation purposes. Disconnect the four hydraulic hoses (6).4. Disconnect the one electrical connector from under the console cover.5. Put identification marks on the two wires connected to the forward pressure switch, the reverse pressure switch and the back-up alarm pressure switch for installation purposes. Disconnect the two wires from forward pressure switch (3), the two wires from reverse pressure switch (5) and the two wires from back-up alarm pressure switch (4). In the following steps, the console cover is removed for better photo illustration.6. For alignment and adjustment purposes, mark the location of knob (8). Remove Allen screw (7) and knob (8) from the speed limiter valve.7. Remove two roll pins (9) and o-ring seal (10) from knob (8).8. Remove four socket head bolts (12), the washers and locknuts that hold propulsion valve (13) and speed limiter valve (11) to the console cover. Remove the two valves as a unit.9. Remove forward pressure switch (3), reverse pressure switch (5) and back-up alarm pressure switch (4).10. Remove two tube assemblies (14).11. Remove the three bolts, washers and locknuts (15). Separate propulsion valve (13) from speed limiter valve (11). The following steps are for the installation of the speed limiter valve.12. Be sure all components are thoroughly clean and free of dirt and debris prior to installation. Do not reuse elastic filled locknuts during installation of the speed limiter valve. The locknuts should be discarded and replaced with new parts.13. Install the speed limiter valve in the reverse order14. Fill the hydraulic oil tank to the correct level with oil. See the Operation & Maintenance Manual for the correct filling procedure. For the disassembly, assembly and adjustments to the speed limiter valve, see Propulsion System Specifications, Systems Operation and Testing & Adjusting, Form No. KENR1307-01.