Manitou MT 620 - Page 101

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TELESCOPING CIRCUIT:
- Start up the lift truck and raise the jib as far as it will go, extending the telescope(s) completely.
- With the I.C. engine running at mid- speed, retract the telescope(s). When retracting the jib, switch off the I.C. engine; movement
should slow down as the I.C. engine speed falls and stop when the I.C. 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 I.C. engine running at mid-speed, tilt the carriage forwards. While it is tilting, switch off the I.C. engine; movement should
slow down as the I.C. engine speed falls and stop when the I.C. engine stops.
D7 - PARKING BRAKE LEVER MECHANISM
GREASE
- Clean and grease articulation axles 1 (fig. D7) with grease (see: 3 - MAINTENANCE:
LUBRICANTS AND FUEL).
D8 - CAB VENTILATION FILTER
CLEAN
MLT 523 Turbo Série B-E2
MLT 523 Turbo MONO-ULTRA Série B-E2
- Lift up protective casing 1 (fig. D8).
- Lift out cabin ventilation filter 2 (fig. D8).
- Clean the filter with a compressed air jet.
- Check its condition and change if necessary (see: 3 - MAINTENANCE: FILTERS
CARTRIDGES AND BELTS).
- Refit the filter and protective casing.
D9 - BATTERY ELECTROLYTE DENSITY
CHECK
The electrolyte density varies depending on the temperature concerned, but a minimum of
1260 at 16°C must be maintained. In the shaded area (fig. D9), the battery is in a normal
charge condition. Readings above this zone indicate that the battery needs to be
recharged.
The density should not vary more than 0.025 units between cells.
- Check the electrolyte density in each battery cell using a hydrometer.
- Do not carry out this check immediately after topping up with distilled water. Recharge
the battery for at least an hour before checking the battery electrolyte density.
Handling and servicing a battery can be dangerous, take the following precautions:
- Wear protective goggles.
- Keep the battery horizontal.
- Never smoke or work near a naked flame.
- Work in a well-ventilated area.
- In the event of electrolyte being spilled onto the skin or splashed in the eyes, rinse thoroughly with cold water for 15 minutes and
call a doctor.
D7
1
1
1
1.240
1.250
1.260
1.270
1.280
1.290
1.300
°C
°F
-18
0
-10
14
0
32
10
50
20
68
30
86
40
104
D9
D8
1
2