Case 650L Crawler Dozer Service Manual

Table of Contents

1. Table of Content
2. Introduction
3. Distribution Systems
4. Power Production
5. Power Train
6. Travelling
7. Body and Structure
8. Tool Positions
9. Electrical Schematics
10. Hydraulics Schematics

Manual Extract: Stack valve – Flow test

Prior operation:
Reservoir – Apply vacuum (A.10.A).
1. Disconnect the hose from the fitting on the inlet port of the equipment control valve.
2. Install a tee in the end of the outlet hose from the hydraulic pump.
3. Connect the tee fitting at the outlet hose from the hydraulic pump to the equipment control valve.
4. Connect a hose from the tee at the hydraulic pump outlet hose to the inlet of the Flowmeter.
5. Turn the vacuum pump off.

6. Lower and secure the ROPS cab/canopy, refer to USER PLATFORM – Lower (E.34.A).
7. Place the outlet hose of the Flowmeter back into the fill port of the reservoir below the level of the oil. Secure the hose to the fill port to prevent it from falling out during the test.
8. Open the pressure Load Valve on the Flowmeter all the way. Make sure the flow switch is in the flow position and move the range switch to the HI position.

9. Start and run the engine at full throttle. Push down the temperature switch on the Flowmeter and read the temperature gauge. The temperature of the oil must be at least 52 °C (125 °F).
10. If the temperature of the hydraulic oil is not as specified, run the engine at full throttle, hold the blade control lever in the RAISE position and slowly close the pressure valve on the Flowmeter until the pressure gauge indicates 103 bar (1500 psi). Continue to run the engine until the temperature of the oil is as specified.

11. Lower the blade to the ground and open the pressure Load Valve on the Flowmeter.