Pressure Reservoir
NOTE:
This test can be performed only on a ready-to-drive vehicle.
- Disconnect connecting bar at leveling valve. Push leveling valve lever down to return flow position. Release pressure in system by opening bleed screw, and remove bleed screw.
- Connect pressure tester to leveling valve. Disconnect pressure line from leveling valve to pressure reservoir and from leveling valve to left and right pressure reservoirs (near special shock absorbers).
- Plug lines with couplings and bleed screws. Attach pressure hose from gauge to either right or left pressure reservoir.
- Push leveling valve lever down to return flow position. Run engine at idle speed. Push leveling valve lever up to filling position and observe pressure gauge.
- Gas pressure in reservoir is indicated at point where pressure gauge needle changes from indication of a gradual pressure increase to an indication of rapid increase. This increase is caused when oil pressure exceeds gas pressure.
- Gas pressure should be 304-363 psi (21.4-25.5 kg/cm2 ) for new pressure reservoirs, and a minimum of 217 psi (15.2 kg/cm2 ) for used pressure reservoirs. Repeat this test for the other reservoir.
- Disconnect pressure tester, install bleed screw and reconnect pressure lines to pressure reservoirs. Run engine at medium RPM and push leveling valve lever up to filling position for approximately 30 seconds to fill control system.
- Turn off engine. Reconnect connecting bar at leveling valve lever. With engine off, check oil reservoir oil level. Oil level should be between "Max." and "Min." for unloaded vehicle, "Min." for loaded vehicle.