JLG G5-18A Service Manual - Manual (Page 45)

4.9 G5-18A/2505
Cab and Covers
8. Loosen the hose clamps, and disconnect the heater
hoses from the engine. Cap or plug the hoses to
prevent debris from entering the heater system.
9. Disconnect the cab-to-wiring harness connectors.
Note: Record the location, and label all cables to ensure
correct installation.
10. Working underneath the cab, label and disconnect
the hydraulic hoses at the cab fittings. Plug the
hoses and cap the fittings.
11. In the cab, disconnect the throttle cable at the
throttle lever bracket. Route the cable away from the
cab to prevent damage during removal.
12. Install four lifting eye bolts with a suitable lifting
capacity in the existing holes at the top corners of
the cab (1).
13. Remove the cab-to-frame bolts (2), washers and
nuts.
14. Carefully begin to lift the cab. Stop and check that all
wiring, hydraulic hoses and fasteners are
disconnected or removed. Do not damage the fuel fill
tube.
15. When all wiring, hydraulic hoses and fasteners are
disconnected or removed, carefully and slowly lift the
cab and remove it from the frame. Readjust the
position of the sling as needed to help balance the
cab during removal.
16. When the cab is completely clear of the machine,
carefully lower it to the ground. Block up or support
the cab.
17. Inspect the condition of the fittings, clamps, hydraulic
hoses, etc. Replace parts as indicated by their
condition.
18. Inspect and replace other machine parts that are
exposed with the cab removed. Repair or replace as
required.
4.5 CAB INSTALLATION
1. Block all four wheels to help prevent the machine
from moving. Assure that there is sufficient overhead
and side clearance for cab installation.
2. Attach a sling with suitable lifting capacity through
the previously installed eye bolts.
3. Use a hoist or overhead crane and sling attached to
the cab. Carefully begin to align the cab with the
mounting holes in the frame. Stop and check that
wiring, hydraulic hoses, cables, etc., will not be
pinched or damaged as the cab is positioned. Take
special note of the fuel fill tube as well. Readjust the
position of the sling as needed to help balance the
cab during installation.
4. Install the cab-to-frame bolts, washers and nuts (2).
Torque the upper cab bolts to 340 lb-ft (461 Nm).
Torque the lower cab bolts to 530 lb-ft (719 Nm).
5. Remove the eye bolts from the top of the cab (1).
6. Connect the throttle cable to the throttle bracket in
the cab.
7. Uncap and reconnect the hydraulic hoses at the cab
locations.
8. Secure the throttle cable to the hydraulic hoses
using nylon ties.
9. Uncap and connect the heater hoses to the engine.
Secure with hose clamps.
10. Install the cab-to-wiring harness connectors on side
of the cab.
11. 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.”
12. Connect the battery negative (-) cable to the battery
negative (-) terminal.
13. Carefully examine all cab components, fasteners,
etc., one last time before engine start-up. Rectify any
faulty conditions.
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