JLG G5-18A Service Manual - Manual (Page 64)

Transmission
6.6 G5-18A/2505
6.6 TOWING A DISABLED MACHINE
Towing a disabled machine should only be attempted as
a last resort, after exhausting all other options. Make
every effort to repair the machine, and move it under its
own power.
Towing is only possible by using the “towing” feature built
into the hydrostatic pump and disengaging the park brake
on the front axle.
1. Securely block all four wheels.
2. Connect an external pump to the P1 port (1) on the
front axle and apply 220-435 psi (15-30 bar) to
release the park brake.
3. Loosen the unlocking bolts (2) and remove the stop
washers.
4. Tighten the unlocking bolts, bottoming the bolts
against the axle housing.
5. Release the pressure from the external pump and
remove pump.
6. Loosen the jam nut and turn the forward relief valve
(3) on the hydrostatic transmission counterclockwise
three turns.
7. Carefully remove the blocking from each tire and tow
the machine to a secure location.
Note: This procedure does not alter any relief settings.
8. After the machine has been towed to a secure
location, reactivate the parking brake.
9. Block all four wheels.
10. Turn the forward relief valve (3) on the hydrostatic
transmission clockwise three turns and tighten the
jam nut.
11. Connect an external pump to the P1 port (1) on the
front axle and apply 220-435 psi (15-30 bar) to the
park brake.
12. Loosen the unlocking bolts (2) and install the stop
washers.
13. Tighten the unlocking bolts.
14. Release the pressure from the external pump and
remove pump.
15. The parking brake should now be reactivated and
the front wheels locked.
16. Remove the blocks from the four tires.
17. Verify that the parking brake works.
Note: If the parking brake does not work, check all
activation operations step by step.
WARNING
BLOCK ALL FOUR WHEELS TO PREVENT
MACHINE FROM MACHINE ROLL AWAY. Failure
to follow the safety practices could result in death or
serious injury.
WARNING
BLOCK ALL FOUR WHEELS TO PREVENT
MACHINE FROM MACHINE ROLL AWAY. Failure
to follow the safety practices could result in death or
serious injury.
MY1930
3
MY2050
2 1
2 (Not Shown)