SHAFT GP-DRIVE 3919017 - Caterpillar

Relief Valve Test (Tractor)
Move the control lever to the FLOAT position until the hydraulic component, on the unit pulled by the tractor, stops its movements. Stop the engine, move the control lever to each position then put the control lever in the FLOAT position.Install a 28 000 kPa (4000 psi) pressure gauge on one end of the 5S4648 Hose Assembly and the 5S4965 Pressure Plate on the other end.Disconnect one of the implement hoses (1) from the hydraulic tank at the junction and install the pressure plate (hose and gauge). It is necessary to use longer bolts through the flange when the pressure plate is between the hose flange and the junction.
HOSE JUNCTION (TRACTOR ONLY)
1. Implement hoses from hydraulic tank.Start the engine and move the control lever to each position again and again to get the temperature of the hydraulic oil to more than 38°C (100°F).Run the engine at high idle speed and move the control lever to the position that puts hydraulic oil through the hose where the pressure gauge is installed. Hold the lever in this position and look at the pressure gauge. The high indication on the gauge is the pressure setting of the relief valve. The correct setting of the relief valve is 17 000 170 kPa (2500 25 psi).If the setting of the relief valve is not correct, make a record of the indication on the gauge and make an adjustment for the relief valve.Adjustment for Relief Valve
Start and run the engine and move the control lever to the FLOAT position for approximately 20 seconds. Stop the engine.
COVER ON FRONT OF HYDRAULIC TANKDrain the oil from the hydraulic tank until the oil level is below the cover of the tank. Remove the cover.Remove plug (1) and adjust as follows:To increase pressure setting either add shims (2) in the plug (1) or remove shims (4) from under plug (1).To decrease pressure setting either remove shims (2) from inside the plug (1) or add shims (4) to plug (1).Pilot valve spring (5) and pilot valve (3) must be in position when plug (1) and the shims are installed on the relief valve. The torque for plug (1) is 108 7 N m (80 5 lb. ft.).
RELIEF VALVE
1. Plug. 2. Shims. 3. Pilot valve. 4. Shims. 5. Pilot valve spring. Fill Oil Tank Procedure
Make reference to on first page of HYDRAULIC SYSTEM TESTING AND ADJUSTING section.
Use two different oils when filling or adding to the hydraulic tank. Use SAE 30 when filling the transmission oil tank and SAE 10W when filling the hydraulic oil tank.
HYDRAULIC AND TRANSMISSION TANK
1. Hydraulic oil filler cap. 2. Transmission oil filler cap.1. Put oil in hydraulic tank until the oil can be seen in the gauge.2. Start and run the engine at low idle rpm. With the engine running, add oil to the tank to keep the level of the oil in the gauge.3. When no more oil is needed to keep oil in the gauge, raise