BHVPM00 Lafayette 3606 Engine Caterpillar parts G3606B Lafayette
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Compatible equipment models: BHVPM00:
GAS ENGINE G3606B Caterpillar
At operating temperature, the hydraulic oil is hot and under pressure. Hot oils can cause burns.To prevent possible personal injury, release the pressure in the work tool hydraulic circuit (boom, stick, bucket, and swing), travel circuits, and the hydraulic oil tank at the filler cap before any hydraulic lines or components are disconnected or removed.Remove the filler cap only when the engine is stopped and the filler cap is cool enough to touch.
Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting and repair of the product. Be prepared to collect the fluid with suitable containers before operating any compartment or disassembling any component containing fluids.After collecting all fluids in suitable containers, dispose of all fluids according to local regulations and mandates.
Tool Part Number Part Description Qty
A 4C-4892 ORFS Fittings Group 1
8T-0859 Pressure Gauge
25000 kPa (3620 psi) 1
(1) Part of 4C-4892 ORFS Fittings Group
Inspect the rotate circuit for external leakage. If a leak is found, perform the necessary repairs. If there is no sign of leakage, proceed to the next step.
Check each control valve for the proper operating pressure. Refer to Service Manual, "Control Valve Pressure ( Hydraulic Rotator) - Test". The control valve must be operating at the proper pressure in order for this test to be valid.
Adjust the pressure of the host machine for the rotate circuit. Refer to table 2 for more information. Refer to Service Manual for the host machine for the adjustment procedure.
Sales model Recommended Pressure
GSV520 14000 kPa (2031 psi)
GSV525 16000 kPa (2321 psi)
Illustration 1 g03880549
(1) Hose assembly
(2) Test port
Illustration 2 g03885699
(2) Test port
Remove hose assembly (1) from the work tool. Plug the hose from the machine. Cap the coupling on the work tool preventing oil from returning to the hydraulic tank.
Install Tooling (A) on test port (2) for the return side of the circuit.
Start the engine of the host machine. Run the host machine at high idle until the hydraulic oil reaches a normal operating temperature of 55° 5°C (131° 9°F).
Open the shells of the work tool. In order to prevent rotation, rotate the work tool to a horizontal position. Place the work tool on the ground. Place downward pressure on the work tool in order to prevent the work tool from rotating.
Attempt to rotate the work tool to the left. Record the reading on the pressure gauge.
If the pressure on the pressure gauge increases, the gerotor motor must be repaired. Refer to Service Manual, "Gerotor Motor - Disassemble".
After gerotor motor test has been completed, stop the engine on the host machine and relieve the hydraulic pressure. Remove the tooling from the work tool.
Install hose assembly (1) onto the work tool.
The air must be purged from the work tool before the tool is returned to operation. Refer to Service Manual, "Hydraulic System Air - Purge" for the proper procedure.