Pump Pressure Test
- Install Pressure Gauge (US1074 B ) between pressure hose and pressure pipe of valve housing. Start engine and let idle. Close valve (for no longer than 5 seconds). On Vanagon, pressure is 1668-1740 psi (117-122 kg/cm2 ). On all others, pressure is 1100-1200 psi (77.83-84.36 kg/cm2 ).
- If pressure is not to specification, check limiting valve by inspecting bores in valve and piston for obstructions. Ensure piston moves freely in housing. Install new valve if necessary.