JLG G6-23A Service Manual - Manual (Page 40)

Cab and Covers
4.8 G5-19A, G6-23A
10. Remove the button-head capscrews, nuts and
lockwashers securing the heater assembly to the
cab.
11. Carefully pull out the heater assembly. Label and
disconnect the wiring harness connections at the
blower.
12. Remove the heater assembly.
b. Heater Assembly Installation
1. Install the heater assembly to its original orientation.
2. Connect the wiring harness connections at the
blower.
3. Install the button-head capscrews, nuts and
lockwashers to secure the heater assembly to the
cab.
4. Reconnect the two heater hoses.
5. Refill the cooling system at the coolant overflow
bottle with a 50/50 mixture of ethylene glycol and
water allowing time for the coolant to fill the engine
block. See Section 2.4, “Fluids, Lubricants and
Capacities,” for system capacities.
6. Connect the battery negative (-) cable at the battery
negative (-) terminal.
7. Start the engine, run it briefly at low idle and check
the machine for any visual sign of fluid leakage.
STOP the machine immediately if any leakage is
noted, and make any necessary repairs before
continuing.
8. Install the seat in the cab.
9. Check the coolant level. Add or remove fluid as
required.
10. Close and secure the engine cover.
4.4 CAB REMOVAL
IMPORTANT: To help ensure safety and optimum
performance, replace the cab if it is damaged. Refer to
the appropriate parts manual for ordering information.
Before performing any inspection, maintenance or
service operation, thoroughly clean the machine. DO
NOT spray water or cleaning solution in, on, near or
around the operator’s dash panels and electrical
components.
Inspect the cab, its welds and mounts. If modification,
damage, a cracked weld and/or fatigued metal is
discovered, replace the cab. Contact your local JLG
distributor with any questions about the suitability or
condition of a cab.
IMPORTANT: Remove and label cab components as
needed before removing the cab from the machine.
Label, disconnect and cap hydraulic hoses. Transfer cab
parts to the replacement cab after the replacement cab
is securely mounted on the machine.
1. Park the machine on a firm, level surface, fully
retract the boom, lower the boom, place the
transmission control lever in (N) NEUTRAL, engage
the park brake and shut the engine OFF.
2. Block the wheels to ensure that the machine does
not move.
3. Open the engine cover. Allow the system fluids to
cool.
4. Disconnect the battery negative (-) cable at the
battery negative (-) terminal.
Note: Steps 5 through 8 are only required if machine is
equipped with heating or heating/air conditioning.
5. Place a suitable container beneath the radiator drain
plug or petcock. Slowly turn the cap on the coolant
overflow bottle to allow any pressure to escape.
Remove the overflow bottle cap.
6. Place a funnel at the base of the radiator to channel
the drained coolant into the container. Open the
radiator drain plug or petcock and allow the coolant
to drain. Replace the drain plug or close the petcock.
7. Transfer the coolant into a suitable, covered
container, and label as "Used Coolant". Dispose of
used coolant at an approved recycling facility.
MAH1120
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