Lull 944E-42 Service Manual - Manual (Page 43)

3-13 944E-42
Boom
12. After the manifold clears the hoses and is inside the
boom, push the hydraulic hoses the rest of the way
into the boom.
13. Install the cylinder trunnion clamps (15) with the
previously used hardware. Loctite ® 242™ and torque
capscrews to 245-274 lb-ft (333-372 Nm).
14. Position one end of the cylinder rod trunnion against
its mounting boss. Install the cylinder trunnion
clamps using the previously used hardware. Check
that the gap (16) between the shim and the first
boom section is within 0.07 in (1,8 mm) on both
sides of the cylinder trunnion. Loctite
® 242™ and
torque all capscrews to 21-38 lb-ft (29-52 Nm).
15. Remove the sling and hoist.
16. Attach a suitable overhead lifting device and sling to
the lifting eye of the attachment tilt cylinder.
17. Lift the attachment tilt cylinder into position and coat
the mount pin and bore hole with anti-seize
compound. Install the mount pin.
18. Install new o-rings into the fittings. Lubricate o-rings
with clean hydraulic oil.
19. Loosely install the female coupler, male nipple and
bulkhead fittings to the bulkhead plate inside the
boom head.
20. Uncap and connect the previously labeled
attachment tilt and auxiliary hydraulic fittings to their
appropriate locations.
21. Install the hose guards to the tilt cylinder hoses. The
guard edges should overlap inside and outside of
the other hose guard.
22. Install the top and side wear pads to the front of the
second boom section.
23. Working from the rear of the boom, move the
attachment tilt and auxiliary hydraulic hoses (17)
until there is approximately a 0.5 in (12 mm) gap
between the Extend/Retract cylinder trunnion (18)
and the hoses.
24. Install the attachment tilt and auxiliary hydraulic
hose clamps to their mounting brackets at the rear of
the second boom section.
Note: ALWAYS use new o-rings when servicing the
machine.
25. Uncap and connect the previously labeled Extend/
Retract cylinder hoses to their appropriate locations.
MU6061
15
MU6071
16
16
1
17
18