Clean all parts in solvent and dry with compressed air. Inspect all parts for wear or damage. Replace any worn or damaged parts. Always install…

Remove the four nuts (Item 1) [Figure 20-40-16]. Remove the inlet (Item 1) [Figure 20-40-17]. Remove the three O-rings (Item 1) [Figure 20-40-18]. Remove the…

Lower the work group to the ground. Stop the engine. With the engine off, turn the start key to the ON position and move both…

The hydraulic control valve is a nine section closed center system and has one main relief valve. The main relief valve operates at 24476 kPa…

The pilot pressure valve supplies lower hydraulic pressure to joysticks. The following tools will be needed for testing the pilot pressure relief valve: MEL 1355…

Drain the hydraulic reservoir. (See Removing And Replacing Hydraulic Fluid on Page 10-130-5.) Remove the floor mat. (See Removal And Installation on Page 40-110-1.) Remove…

1. Engine High Idle Speed 2. Warm oil over relief function to minimum 66°C (150°F). Cycle all functions during warm up procedure. Warm oil until…

The following tools will be needed for the testing at the diagnostic coupler: MEL1355 – Test Kit includes the following: MEL1355-3 – 34474 kPa (345…

When testing the port relief valves with a hydraulic hand pump, slowly pressurize the valve. If the hand pump is pumped fast, the pressure will…