SET-UP
OPERATOR MANUAL 600E2
4-12
PUBLISHED 04-26-2019 CONTROL # 113-09
the 1
st
section boom, first lifting the extension and then
engaging the extension side stow bracket and the boom
hook completely upon full retraction of the boom.
14.
Install stow pin A with spring clip into the ramp/side stow
bracket assembly on the extension. Complete
engagement of stow brackets and proper installation of
pin A is critical for a secure extension stow attachment.
15.
Remove pins C1 from upper and lower extension ears. A
slight hammer strike may be necessary to remove pins.
Always use proper eye protection during this step.
16.
Reinstall loadline over boom sheave case.
Boom Extension Maintenance
1.
Lubricate sheave pin on extension with grease gun
containing chassis grease weekly.
2.
Check for free rotation of extension sheave daily when
using extension.
3.
Lubricate extension sheave case pivot pin with grease
gun containing chassis grease monthly.
Boom Extension Removal
Should extension removal from the boom become
necessary, proceed as follows
1.
Unstow and swing extension into position on the boom
tip according to Steps 1 - 10 in the preceding extension
deployment section.
2.
Support and raise the extension at its balance point and
remove the two swing around pins. Extension is now
free of boom.
3.
To install, proceed in reverse order of removal.
Extension Jack Procedures
The Extension Pin alignment device (Extension Jack) is an
aid for installing the fourth or “last” extension pin when
setting up a extension. This device has been designed to line
up the bottom extension pin hole on the left side of the crane
the hole in the boom ear.
The extension pin alignment device consists of a hydraulic
jack mounted horizontally on the underside of the extension.
A handle for the jack is provided and is installed above the
jack on the side of the extension.
Prior to using the Extension Jack, complete Steps 1 to 12 in
the “Side Folding-Swing Around Deployment Procedure”.
1.
Remove jack handle and using the flattened end, close
jack release valve by turning the handle clockwise until it
is firmly closed.
2.
Insert the round end of the handle into the handle sleeve
and pump jack until ram contacts boom sheave case.
3.
Continue to pump slowly until extension pin holes
exactly aligned with hole in boom ear. At this time the
final extension pin can be easily tapped into position.
If hole alignment is “over shot” due to jacking too far, the
jack can simply be relieved and the process repeated.
To relieve the jack, use the flattened end of jack handle
to slowly turn relief valve counter clockwise no more
than one full turn.
4.
After all extension pins are installed, relieve jack.
The extension pin alignment device is also useful when
removing the “fourth” pin. Use the extension jack to relieve
extension weight induced pressure on the “fourth” pin and it
will be much easier to remove.
Once the extension has been erected or stowed, it is
important that the jack handle be properly placed back on its
stowage hooks and that the cotter key be properly placed in
the stowage hook to retain the handle on the hook.
DANGER
Visually check all pin positions to assure extension is fully
retracted into side stow brackets, extension stow
attachments secure, and all pins and spring clips are in
their proper locations. Failure to properly secure the
extension during stowing and erecting may allow the
extension to fall. Serious personal injury or death could
result.
WARNING
Always have at least one, if not both of the following in
place at all times:
•
Side stow bracket completely engaged into stow
hook with stow pin A properly in place.
•
Both pins C1 in upper and lower extension holes
properly in place through mating holes on boom tip
CAUTION
Extension Weights
The 41 ft (12.49 m) extension weights 960 lbs (435 kg) at
129 in. (328 cm) when retracted from mounting pin holes.
Fo
r
Reference
Only
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