Lull 944E-42 Service Manual - Manual (Page 40)

Boom
3-10 944E-42
3.3.4 First Boom Section Installation
1. Use a suitable overhead lifting device and sling and
carefully lift the first boom section into place on the
transfer carriage.
2. Install the boom pivot pin (5) with the previously
used hardware. DO NOT coat the boom pivot pins
with anti-seize compound.
3. Add or remove shims (6) as required until a
maximum total gap of 0.09 in (2,3 mm) is obtained.
Balance the number and thickness of shims equally
on both sides. If an additional (odd) shim must be
added to obtain the proper gap, add to the right side
of the boom.
4. Raise each slave cylinder into position, coat each
mount pin (4) and bore hole with anti-seize
compound and install the mounting pins. Loctite
®
242™ and torque each capscrew to 18-31 lb-ft
(13-23 Nm). DO NOT stretch or damage the slave
cylinder hydraulic hoses.
5. Use a suitable overhead lifting device and sling
attached to the lift/lower cylinder. Remove slack from
the sling and raise the cylinder into its mount boss
on the underside of the boom.
6. Coat the lift/lower cylinder pivot pin and bore hole
with anti-seize compound. Install the pin and secure
with capscrew. Loctite
® 242™ and torque to
70-77 lb-ft (95-105 Nm).
7. Remove the slings from the lift/lower cylinder, and
remove the blocks or supports from beneath the
cylinder.
8. As required, install the hydraulic clamps on the
boom and secure the attachment tilt and auxiliary
hydraulic tubes and hoses within the clamps on the
boom and frame. Torque clamp capscrews to
4-8 lb-ft (6-11 Nm).
9. Install new o-rings into the fittings. Lubricate o-rings
with clean hydraulic oil.
10. Uncap and connect the previously labeled hydraulic
fittings to their appropriate locations.
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5
MU0371
4