Part No. 57.4400.9203 GTH-4016SR • GTH-4018SR
59
March 2010
REV A
Section 4 • Repair Procedures
HYDRAULIC PUMPS
5-5 How to Test the Auxiliary
Gear Pump
1. Insert the 0-60psi manometer in the TP4 port
2. Start the engine.
3. Increase the engine up to 2000rpm
4. Close the valve placed near to the relief valve.
5. Check the pressure in the manometer. It must
be 180psi.
6. If not, set the relief valve.
7. Open the valve.