Final Test And Reinstallation - JLG 1200SJP Service And Maintenance Manual

49. Install the special tool (6689960310) on the flanged hub
(31) and turn the screw until it compresses the springs
(45).
50. Assemble the circlip (47) in its seat and remove the spe-
cial tool.
NOTE: Before assembling the hydraulic motor, verify by a depth
slide gauge the correct assembly of the unit checking the
axial distance as shown below.
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SECTION 3 - CHASSIS & TURNTABLE

Final Test and Reinstallation

Check the product by remounting it to the machine.
Check the function of the drive hub following all the checks
shown in Startup and Running In.
If work on the brake was undertaken, it is important to check
that there are no oil leaks. Follow the procedure below:
1. Connect the pressure pilot line with the manometer
(with a base scale of 100 bars) to the brake release port.
2. Open the flow valve and release the brake with the pilot
pressure of 50 bar.
3. Close the flow valve and keep the brake released 3 min-
utes or longer.
4. Using the manometer, check that the pressure remains
constant.
NOTE: If the pressure drops it may mean that the brake seals are
not tight and consequently they must be replaced or it may
mean that the reassembling was not completed properly.
5. After having reassembled the gearbox, install the
hydraulic motor.
6. Fill the gearmotor with the lubricant oil.
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