Cab and Covers
4.8
3507, 3508, 3509, 3512, 3513, 4007, 4008, 4009, 4012, 4013
b. Heater Assembly Installation
1. Connect the wiring harness connections to the
blower.
2. Lift the heater assembly to the bottom of the cab
floor, and secure with bolts, lockwashers and nuts.
3. Connect the previously labeled hoses to the heater.
Secure with hose clamps.
4. Fill the cooling system completely with a 50/50
mixture of ethylene glycol and water, allowing time
for the coolant to fill the engine block. The cooling
system capacity is listed in Section 2.4, “Fluids,
Lubricants and Capacities.”
5. Connect the battery negative (-) cable to the battery
negative (-) terminal.
6. Start the engine and run at low idle. Check for any
visual signs of fluid leakage. STOP the engine
immediately if any leakage is noted, and make any
necessary repairs before continuing.
7. Wait for the engine to cool and check the coolant
level. Add coolant to the overflow bottle as required
to bring the coolant to the proper level.
8. Replace the cab bottom shield.
9. Replace the belly pan.
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, level the
machine. Allow sufficient overhead and side
clearance for cab removal. 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.
3. Open the engine cover. Allow the system fluids to
cool.
4. Disconnect the battery negative (-) cable from the
battery negative (-) terminal.
5. Remove the belly pan.
6. Drain the engine radiator. Refer to Section 7.4.3,
“Radiator/Oil Cooler and Coolant Heater
Replacement.”
7. Working under the cab, remove the cab bottom
shield.
8. Label, disconnect and cap the heater hoses.
9. Remove the lens-head screws in the cab and
remove the console panel below the right side
window to access the wire harness connections, the
right rear side panel and the left rear cup holder
panel to access the two rear cab mount bolts. Also
remove the rubber floor mat to access the front two
cab mount bolts.
10. Disconnect the cab-to-wiring harness connectors at
the circuit board. Push the harness connectors
through the opening at the right front corner of the
cab.
11. Remove the park brake cover. Disconnect the park
brake switch connector and park brake cable.
12. Working under the cab, label, disconnect and cap
the hydraulic hoses at the cab fittings. Plug the
hoses and cap the fittings.
13. Disconnect the throttle cable from under the cab.
14. Install two lifting eye bolts with a suitable lifting
capacity in the existing threaded holes at the top
corners of the windshield.
15. Secure the cab with a hoist or overhead crane and
sling. Do not lift the cab at this time.
16. Remove the four cab-to-frame bolts (13), flat
washers and nuts.
17. Remove the mirrors and all other cab components
as needed, if not previously removed.
18. Use a hoist or overhead crane and sling attached to
the cab, carefully begin to lift the cab. Stop and
check that all wiring, hydraulic hoses and fasteners
are disconnected or removed.
Courtesy of Crane.Market
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