JLG 4017 Service Manual - Manual (Page 60)

Cab and Covers
4.8 4017
Note: Record the location, and label all hoses to ensure
correct installation.
11. Working under the cab, label and disconnect the
hydraulic hoses at the cab fittings. Plug the hoses
and cap the fittings.
12. Disconnect the throttle cable from under the cab.
13. Install two lifting eye bolts (1) with a suitable lifting
capacity in the existing threaded holes at the top
corners of the windshield.
14. Remove the four cab-to-frame bolts, flat washers and
nuts (2).
15. Remove the mirrors and all other cab components
as needed, if not previously removed.
16. 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.
17. When all wiring, hydraulic hoses and fasteners are
disconnected or removed, carefully and slowly lift the
cab and remove it from the frame.
18. 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 over. Assure
that no personnel enter the cab while it is being
removed from the machine.
19. Inspect the condition of the fittings, clamps, hydraulic
hoses, etc. Replace parts as indicated by their
condition.
20. 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. Install two lifting eye bolts with a suitable lifting
capacity in the existing threaded holes by the top
corners of the windshield.
3. Use a hoist or overhead crane and sling attached to
the two lifting eyes, 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 bolts through the cab/frame mounts
and install the four washers and nuts. Remove the
sling and both lifting eye bolts. Tighten and torque the
four mounting bolts to 651 Nm (480 lb-ft).
5. Secure the throttle cable to the hydraulic hoses
using wire ties.
6. Install the throttle cable on the throttle cable bracket,
attach the clip/pin through the fork link.
7. Working under the cab, uncap and connect the
hydraulic hoses at the cab fittings.
MZ0660
1
MZ0640
2