JLG G5-18A Service Manual - Manual (Page 84)

Engine
7-6 G5-18A, 2505H, 25.5
Note: Retain the key located on the fan motor shaft.
5. Turn the fan motor/guard over to access the two fan
motor mounting bolts (16).
6. Loosen and remove both mounting bolts securing
the fan motor to the fan guard.
7. Remove the fan motor as necessary.
c. Cooler/Fan Motor Installation
1. Apply Loctite ® 242 TM to all mounting bolts
2. Install the fan motor to the fan guard. The fan motor
can only be installed one way.
3. Install the two previously removed mounting bolts
and torque to 31-35 lb-ft (41-47 Nm).
4. Verify the key is in place on the fan motor shaft and
install the previously removed fan. Install the fan
mounting washer and bolt. Torque to 10.75 lb-ft
(15 Nm).
5. Install the fan motor assembly to the fan shroud.
Install and torque the mounting bolts to 27 lb-ft
(37 Nm).
d. Radiator/Oil Cooler Installation
1. Connect a lifting strap to the radiator/oil cooler lifting
eyes.
2. Slowly lower the radiator assembly to connect the
previously removed hydraulic fan hoses, hydraulic oil
cooler out hoses and the bottom radiator hose.
3. Remove any caps and/or plugs and install the
previously removed hoses.
4. Install the previously removed fan solenoid(s).
Note: Verify the fan solenoid(s) retaining nut is installed
with the recess FACING the solenoid.
5. Lower the radiator/oil cooler assembly into place.
6. Remove any caps and/or plugs and install the
previously removed hydraulic cooler outlet hose.
7. Install previously removed bottom radiator hose.
8. Connect the electrical connector to the fan
solenoid(s).
9. Connect the electrical connector to the hydraulic
temperature sensor.
10. Install the previously removed rebound washers and
nuts securing the radiator assembly. Torque the
mounting nuts to 31-34 lb-ft (23-25 Nm).
11. Install the previously removed surge tank.
12. Install the previously removed top radiator hose.
13. Connect the previously removed surge tank hose to
the radiator.
14. Re-fill the surge tank/radiator with approximately
2.7 gal (9.9 L) of a 50/50 mixture of ethylene glycol
and water.
15. Install the previously removed air dam.
16. Install the previously removed inside firewall plate.
17. Install the previously removed right front fender. Do
not tighten mounting bolts at this time.
18. Connect the ECM connectors and secure the wire
harness.
19. Properly connect the battery.
20. Remove any boom support.
21. Run the engine to operating temperature. Visually
check for leaks with the engine running. Check the
coolant level in the surge tank and fill, or drain, as
necessary. Check the hydraulic oil level in the tank
and add hydraulic oil as required.
Note: Refer to Section 8.11.11, “Variable Speed Fan
Valve,”for detailed testing information.
22. Retract and raise boom. Install previously removed
boom support. Shut engine OFF.
Note: If previously removed, install the right front tire
and torque lug nuts to 220 lb-ft (300 Nm).
23. Install the previously removed engine pod side skirt
and belly pan. Tighten all mounting bolts, including
the right front fender mounting bolts.
24. Install the hood and secure with the previously
removed mounting bolts.
25. Install each gas strut and secure with the previously
removed mounting nuts.
26. Adjust hood as needed.
27. Close and secure the engine cover.
MY8960
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