SPIDER AS-FAN 8N6585 - Caterpillar

Introduction
This test will show the following conditions if the conditions exist:
Oil pressure to the transmission lubrication circuit is good.
The transmission lubrication relief valve is closed.Required Tools
Illustration 1 g01089423
Tooling (A)
Use the tools in Table 1 to complete the following test procedure.
Table 1
Required Tools (Pressure Gauges)
Tool Item Part Number Description Qty
A A1 6V-3989 Fitting (Test) 2
A2 8T-0855 Pressure Gauge 2
A3 177-7861 Hose As 2
A4 6V-4143 Coupler 4
186-2602 Pressure Sensor
0 to 1000 kPa (0 to 145 psi) 1 Test Procedure
Sudden movement of the machine or release of oil under pressure can cause serious injury to persons on or near the machine.To prevent possible injury, perform the procedure that follows before testing and adjusting the hydraulic system.
Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting, and repair of the machine. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids.Dispose of all fluids according to local regulations and mandates.
Pressure gauges are used in the following test procedure.
Illustration 2 g01276773
Pressure tap location for lubrication test
Attach a coupler to the transmission lubrication pressure tap (1). If necessary, connect the pressure hose. Install a pressure gauge 400 kPa (58 psi) to the fitting.
Start the engine and warm the oil up to 60 °C (140 °F).
Run the engine at LOW IDLE rpm with the transmission control lever in the NEUTRAL position. The pressure on the gauge must be a minimum of 4 kPa (0.5 psi).
Run the engine at HIGH IDLE with the transmission control lever in the NEUTRAL position. The pressure on the gauge must be 179 27 kPa (26 4 psi).
When the test is complete, stop the engine and remove the test equipment.