JLG 600SC_660SJC Service Manual - Manual (Page 108)

SECTION 5 - CAT CHASSIS (S/N 0300128000 TO PRESENT)
5-16 – JLG Lift – 3121157
5.5 OPERATING STEPS AND PRECAUTIONS
Precautions at Startup
After installation of a new or serviced drive motor on the
machine, prepare for inspection and startup using the fol-
lowing procedures.
1. Fill the piston motor case with hydraulic fluid. (See
Figure 5-18.) Remove air from the hydraulic circuit.
NOTE: When a hand-operated or electrically operated pump
in small capacity is used, carefully check to see that
the internal pressure of the motor case does not
exceed 0.3 MPa.
2. Fill the reduction gear case with the lubricating oil up
to the specified level. (See Figure 5-19.) Remove the
plugs of lubricating and gauging ports, and add
lubricant until it flows out of the gauging port. Rein-
stall and tighten the plug of each port after making
sure that lubricant flows out. (Standard Lubricant
Quantity: 2600 cm2)
NOTE: The reduction gear box has been fully lubricated up
to the specified level at the time of shipment from our
factory.
Some of motors do not have lubricating ports or
parking manual release ports on base-plate.
Initial Operation
Repeat the initial operations at low speed. Residual air in
the circuit may cause unusual noise at the valve, but con-
tinue the operation at low speed. Ensure that there is no
oil leakage around the equipment. Ensure that the resid-
ual air is purged and there is no oil leakage and that there
is no unusual noise or vibration caused by the drive motor
under loaded conditions, prior to start of working opera-
tions.
Figure 5-18. Oil level of hydraulic fluid at the initial stage
Fill the piston motor case with
hydraulic fluid up to this level.