Maintenance Positions; General; Maintenance Position (Excavator Arm Lowered) - jcb JS300 Service Manual

General

DANGER Your machine may be fitted with a hydraulically raised cab. Do not, under any circumstances
enter or work underneath an un-supported cab in the raised position.
WARNING A machine can sink into soft ground. Never work under a machine on soft ground.
WARNING Make the machine safe before getting beneath it. Make sure that any attachments on the
machine are correctly attached. Engage the park brake (if installed), remove the ignition key, disconnect
the battery.
Make the machine safe before you start a maintenance procedure.
Unless a maintenance procedure instructs you differently, you must lower the arm and lower the hydraulically
raised cab (if fitted). Refer to: Maintenance > Maintenance Positions (Page 184).

Maintenance Position (Excavator Arm Lowered)

1. Park the machine on solid, level ground, with the upper structure parallel to the undercarriage..
Refer to: Operation > Stopping and Parking (Page 56).
2. If necessary, lower the dozer blade.
3. Lower the excavator so the dipper is flat on the ground.
Refer to: Operation > Operating Levers/Pedals > Excavator Arm Controls (Page 96).
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Excavator lowered with the dipper flat on the ground
4. Stop the engine.
5. Remove the ignition key.
6. Release the hydraulic pressure and the tank pressure.
Refer to: Maintenance > Hydraulic System > General > Discharge (Page 221).
7. Isolate the battery to prevent the accidental operation of the engine.
Refer to: Maintenance > Electrical System > Battery Isolator > Check (Operation) (Page 225).
184

Maintenance Positions

Figure 204.
9831/1100-2
Maintenance
Maintenance Positions
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184