Manitowoc Grove RT765E-2 Service And Maintenance Manual page 181

RT765E-2 SERVICE MANUAL
13. Pull down on the handle to disengage the spring loaded
boom stop block. Place the end of the handle in the
retainer plate. Fully retract the boom.
NOTE: When the boom retracts, the handle will be
released allowing the stop block to engage when
the boom is extended (Figure 4-6).
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14. Ensure that all the stowage lugs on the base and fly are
fully engaged with the pins on the stowage brackets.
15. Insert lock hitch pin. Install the pin securing the
extension base to the front stowage bracket (Figure 4-5)
(Detail A). Ensure the lock hitch pin is pushed all the way
in.
16. Install the pin attaching the fly section to the boom base
section stowage bracket (Figure 4-5) (Detail D).
NOTE: If the extension fly section remained on the boom
stowage brackets, perform steps 17 thru 20.
17. Remove retainer clip and attachment pin from the
bushing on base section.
18. Insert the attachment pin into the base section to fly
section attachment fittings and install the retainer pin.
19. Ensure the spring loaded latch hook is engaged on fly
section sheave end (Figure 4-5) (Detail E).
20. Ensure the pin attaching the fly section to the boom base
section stowage bracket (Figure 4-5) (Detail D) is in
place.ment
21. Remove the retainer clips and attach pins from the
anchor and attach fittings on the right side of the boom
nose and stow them in the base of the swingaway.
22. Remove the clip pin and pin securing the boom
extension push bar assembly. Place the boom extension
alignment device in the stowed position and secure it in
place with the pin and clip pin.
GROVE
Failure to maintain the proper clearance between the
swingaway anchor fittings and the boom nose attach
fittings could cause these fittings to contact each other
during operation of the boom.
23. Extend the boom enough to engage the boom stop
block.
24. Rig the boom nose and hoist cable as desired and
operate the crane using normal operating procedures.
Boom Extension Alignment Device Adjustment
1. Ensure the boom extension and retraction cables are
properly adjusted. If necessary, adjust the cables.
2. Fully retract the boom.
3. Following the boom installation procedures, install the
pins into the boom attachment lugs on the right side of
the boom nose and secure in place with the retainer
clips.
FIGURE 4-6
4. Following the boom installation procedures, swing the
boom extension around and install the pin in the upper
left boom extension lug and secure in place with the clip
pin.
5. If the pin cannot be installed in step 4 because of lateral
misalignment, adjust the upper cross strut adjustment
screw on the swingaway adapter to align the holes.
6. Extend the boom approximately 15 cm (6 in).
7. Remove the pin securing the push bar assembly in the
stowed position and slide the push bar to the forward
position. Secure the push bar in place with the pin and
clip pin.
8. Retract the boom fully. Adjust the pusher bar, using the
adjustment bolt, until the holes in the lower left lug of the
boom extension align with the boom nose shaft holes.
Install the attachment pin in the extension lug and
secure the pin with the retainer clip.
9. If the attachment pin cannot be installed in step 8
because of lateral misalignment, adjust the lower cross
strut adjustment screw on the extension adapter to align
the holes.
10. Secure the adjustment bolt in place by tightening the
collar clamp.
11. When the boom extension is not in use, the boom
extension alignment device should be placed in the
stowed position.
Published 9-04-2014, Control # 422-08
CAUTION
BOOM
4
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