CONTROL GP-JOYSTICK 3350511 - Caterpillar

Release the pressure in the hydraulic system as follows:a. Shut off the engine.b. Move the control levers through their full travel strokes. This will relieve any pressure that may be present in the pilot system.c. Slowly loosen the air breather cap on the hydraulic oil tank to release the pressure.d. Tighten the air breather cap on the hydraulic oil tank.e. The pressure in the hydraulic system has now been released. Lines and components can now be removed. Location of the steering control valve and crossover relief valve is directly beneath the operator's compartment.1. Lower the guard plate directly under the operators compartment. 2. Remove six bolts and washers (1) and side panel (2). 3. Disconnect all tubes and hoses (3) from steering control and crossover relief valve (4). 4. Use a transmission jack or suitable support and wood blocking as shown. Secure the steering control valve and crossover relief valve to the jack.5. Remove three mounting bracket bolts (5).6. Move the valve and bracket towards the machine for clearance and then lower the jack and remove the steering control valve and crossover relief valve. The weight of the valve group is 72 kg (160 lb). Install in the reverse order. Refer to the topic "Lubricant Viscosities and Refill Capacities" in the Operation and Maintenance Manual and fill the hydraulic system with hydraulic fluid.Disassemble Steering Control Valve & Crossover Relief Valve
Start By:a. remove steering control valve and crossover relief valve. For disassembly of the crossover relief valve, only do Steps 1 through 9. 1. Remove bolts (2) and crossover relief valve (1) from steering