JLG 4017 Service Manual - Manual (Page 43)

3.19 4017
Boom
12. Label and remove the two auxiliary hydraulic hoses
(2) from the bulkhead fittings inside the boomhead.
Plug the hose ends and cap the bulkhead fittings to
prevent dirt and debris from entering the hydraulic
system.
13. At the rear of the boom, label and remove the tilt
cylinder hoses and the auxiliary hoses from the hose
carrier bulkhead. Plug the hose ends and cap the
bulkhead fittings to prevent dirt and debris from
entering the hydraulic system.
14. From the top rear of the hose carrier, remove both
bolts (3) holding the hose carrier (4) to the third
boom section.
15. Remove both left and right side wear pad bolts and
both left and right bottom wear pad bolts from the
rear of the fourth boom section to be able to remove
the hose carrier.
16. Pull the hose carrier halfway out of the rear of the
boom, set on a suitable support. Using a sling
around the hose carrier, balance the hose carrier
and pull the remainder of the way out. Set the hose
carrier on the ground or on suitable supports.
Note: If the machine or the boom has to be moved,
replace all the bolts that were removed from the wear
pads on the rear of the fourth boom section BEFORE the
machine is started and/or the boom is retracted or
extended.
3.6.2 Hose Carrier Assembly Replacement
1. Carefully lay the new hose carrier assembly out flat
on a hard surface.
2. Make sure the boom is level and that the front two
hose carrier holes (5) in the fourth boom section are
accessible just in front of the front of the third boom
section.
3. Using a sling around the center of the hose carrier,
lift and carefully place the front of the hose carrier
part way into the rear of the boom. Set the rear of the
hose carrier down on a suitable support. Reposition
the sling and lift the rear of the hose carrier and slide
it the remainder of the way into the boom.
MZ0900
2
1
Hose
Carrier
MZ0920
3
4
MZ0910
6
Access Hole on Each
Side of the Third
Section Boom
5
7