Measuring Operating Pressures; Relief Valve Checking And Setting Procedure - NPK M20S Instruction Manual

TROUBLESHOOTING

MEASURING OPERATING PRESSURES

Tools and equipment required:
(For carriers with an NPK hydraulic installation kit installed).
Pressure gauge (g8f): 5000 psi (350 bar).
Test port adapter (g20): to fit #4 SAE female port in NPK shut-off valve (k4).
Test hose (t81): 5000 psi (350 bar) rated

RELIEF VALVE CHECKING AND SETTING PROCEDURE

NPK Hydraulic Installation Kits provide shut-off valves (k4) with test ports (k8) in both
the jaw open (m4) and close lines (m3). Install pressure test hoses in both test ports.
- -
131