Manitou A Series Manual page 134

D7 - H
YDRAULIC RETURN OIL FILTER CARTRIDGE
Stop the I.C. engine and remove the pressure from the circuits by acting on the hydraulic
controls.
Thoroughly clean the outside of the filter and its surroundings before any
intervention in order to prevent any risk of polluting the hydraulic circuit.
- Place a container under hydraulic drain filter 1 (Fig. D7).
- Unscrew the body of the filter.
- Remove the hydraulic return oil filter cartridge and fit new replacement cartridge (See
chapter : FILTERS CARTRIDGES AND BELTS in paragraph : 3 - MAINTENANCE).
- Make sure that the cartridge is correctly positioned and refit the body of the filter.
Tighten the body of the filter by hand pressure only and lock the body of the filter in place by a quarter turn.
D8 - B
ALANCING VALVE
To be performed after the first 50 hours of operation and then every 500 hours.
Stop the lift truck on horizontal ground, put the handbrake on and set the reverse gear to neutral.
ROLE OF BALANCING VALVES
- The balancing valves protect the user from any risk due to a fall in hydraulic pressure or an exploding hose during hydraulic
operations.
Keep everyone well away during these inspections.
In all cases, the balancing valve(s) concerned must be repaired or replaced if hydraulic movement continues after the engine
has been switched off.
Never use the lift truck with a defective balancing valve.
TESTING EACH HYDRAULIC MOVEMENT
LIFTING CIRCUIT :
- Start up the lift truck and raise the jib by about 45°.
- With the engine running at mid- speed, lower the jib. While the jib is being lowered, switch off the internal combustion engine;
movement should slow down as the engine speed falls and stop when the engine stops.
TELESCOPING CIRCUIT :
- Start up the lift truck and raise the jib as far as it will go, extending the telescope(s) completely.
- With the engine running at mid- speed, retract the telescope(s). When retracting the jib, switch off the internal combustion
engine; movement should slow down as the engine speed falls and stop when the engine stops.
TILT CIRCUIT :
- Place the nominal load on the forks, anchor it correctly to prevent it from falling off during the test.
- Start up the lift truck and tilt the carriage backwards, lifting the jib sufficiently to allow the carriage to tilt.
- With the engine running at mid-speed, tilt the carriage forwards. While it is tilting, switch off the internal combustion engine;
movement should slow down as the engine speed falls and stop when the engine stops.
CHANGE
3 - 29
D7
1
CHECK