JLG 4017RS Service Manual - Manual (Page 127)

7-13 3614RS, 4017RS
Engine
7.9 ENGINE REPLACEMENT
7.9.1 Engine/Transmission Removal
Note: The radiator assembly must be removed from the
machine before engine/transmission removal. Refer to
Section
7.4.3, “Radiator Assembly Replacement.” Several additional
components must be removed before engine/transmission
removal. They will be addressed in the following procedures.
1. Park machine on a firm, level surface, level machine, fully
retract boom, lower boom, place transmission in (N)
NEUTRAL, engage parking brake, and shut engine OFF.
2. Place a Do Not Operate Tag on both ignition key switch
and steering wheel.
3. Open engine cover. Allow system fluids to cool.
4. Properly disconnect battery(s) and remove.
5. Remove the oil pan cover from underneath the
engine compartment.
6. Properly drain hydraulic oil system. Refer to Section 8.7,
“Hydraulic Reservoir,” for detailed instructions.
7. Properly drain transmission. Refer to Section 6.4.1,
“Transmission Removal,” for detailed instructions.
8. Mark position of cover to help with cover adjustment
when being reinstalled.
9. Remove hood (1), end cover (2) and belly pan from
engine compartment.
10. Remove the heater and cooling hoses attached to the
engine.
11. Label, disconnect and cap/plug all hydraulic
connections on the engine/transmission.
Note: Engine/transmission harness is routed and attached to
engine/transmission using hold-down clamps and plastic wire
ties at various places on engine. Before removing engine/
transmission, ensure that harness
has been completely separated (disconnected) from engine/
transmission. Move harness clear of engine/transmission, and
with help of an observer, ensure that engine/transmission
clears the harness during removal.
12. Label and disconnect all electrical wire connections on
engine/transmission.
13. Disconnect and cap the fuel inlet line (3).
14. Disconnect and cap the fuel return line (4) located near
rear engine mount.
15. Label and remove all clamps securing any fuel line on
engine.
M 7440 Z
1
2
M 7540 Z
3
M 7580 Z
4