JLG G12-55A AccuPlace Service Manual - Manual (Page 53)

4.9 G10-55A & G12-55A AccuPlace
Cab and Covers
24. 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.
25. When the cab is completely clear of the machine,
carefully lower it to the ground. Block up or support
the cab so that it does not move or fall. Ensure that
no personnel enter the cab while it is being removed
from the machine.
26. Inspect the condition of the fittings, clamps, hydraulic
hoses, etc. Replace parts as indicated by their
condition.
27. 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. Ensure that there is sufficient overhead
and side clearance for cab installation.
2. Route a sling with a suitable lifting capacity around
the inner six braces (13) and behind the center cross
support above the wind shield.
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.
Readjust the position of the sling as needed to help
balance the cab during installation.
4. Install the four lower cab-to-frame mount bolts,
washers and nuts to 280-305 lb-ft (380-414 Nm).
5. Install the two cab side mount bolts, washers,
isolators and nuts to 680-720 lb-ft (922-976 Nm).
6. Install the engine air filter and hydraulic oil reservoir
breather to their brackets at the top of the cab.
7. Install the throttle cable to the throttle pedal
assembly. Refer to Section 4.3.3, “Throttle Pedal.”
8. Pull all the hydraulic hoses and electrical wires
through the cab.
9. Uncap and reconnect the previously labeled
hydraulic hoses to their appropriate locations.
10. Reconnect the previously labeled electrical
connections to their appropriate locations.
11. For machines equipped with the heater option,
reconnect the heater hoses to the cab heater. Refer
to Section 4.3.7, “Heater/Defroster System (If
equipped).”
12. Install the fuel tank to the cab. Refer to Section 7.4.2,
“Fuel Tank.”
13. 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, “Fluid and Lubricant
Capacities.”
14. Connect the battery negative (-) cable to the battery
negative (-) terminal.
15. Carefully examine all cab components, fasteners,
etc., one last time before engine start-up. Rectify any
faulty conditions.
16. Start the engine and check the operation of all controls.
Check for hydraulic fluid leaks. Check the hydraulic
fluid level in the tank and add fluid as required.
Note: When the engine is initially started, run it briefly at
low idle and check the machine for any visual sign of
fluid leakage. STOP the engine immediately if any
leakage is noted, and make any necessary repairs
before continuing.
17. 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.
18. Install the mirrors and all other cab components as
needed, if removed.
19. Unblock the wheels.
20. Close and secure the engine cover.