National Crane PUBLISHED 04-26-2019 CONTROL # 113-09 4-11
600E2 OPERATOR MANUAL SET-UP
14. Using hoist function, unspool enough loadline to reeve
loadline over extension sheave case. Keep slight
tension on loadline to avoid bird caging of loadline on
hoist drum.
15. Route loadline over extension sheave and install keeper.
Install line block to end of loadline.
16. Remove anti-two-block weight/chain assembly from
boom tip switch and install on extension tip switch. Be
certain to use keeper provided with switch.
17. Disconnect twist lock quick coupler on anti-two-block
cord going to boom anti-two-block switch and attach to
quick coupler on extension anti-two-block wire on rear of
extension between the upper and lower extension ears.
18. Install extension swing pin B and spring clip into
extension ears.
19. For manually extendable extensions, pull extension
retention pin E, and extend second section out by pulling
on sheave case. The second section extension, as it
extends, will hit a mechanical stop that allows for
extension pin E installation. Install pin E and spring clip.
STOWING PROCEDURE
1. Using lift function, lower boom so that extension tip is
close to the ground.
NOTE: When lowering the boom below horizontal, two
persons may be required. With the telescope
control in neutral, the boom can creep out when
below horizontal.
2. For manually extendable extensions, pull extension
retention pin and fully retract extendable 2
nd
section
extension into the 1
st
section. Retraction of 2
nd
section
may be facilitated by attaching loadline wedge socket to
attachment point F on the extension sheave case.
Slowly activate the hoist up function until the 2
nd
sections fully retracted
3. Reinstall extension retention pin through the 1
st
and 2
nd
section extension assembly and install spring clip.
4. Remove loadline from extension sheave case. Place
loadline in area to avoid possible damage from stow
procedure.
5. Disconnect twist lock anti-two-block wire connector at
rear of 1
st
section extension. Connect twist lock
connector to anti-two-block switch connector on boom
tip. Move anti-two-block weight assembly to boom tip
switch.
6. Attach tag line to sheave case end of extension.
7. Remove spring clips from pins C2 on both upper and
lower extension ears.
8. Remove pins C2 from upper and lower extension ears.
Do not remove C1 pins at this time. C1 pins will be used
as a pivot point to swing extension into stow position. A
slight hammer strike may be necessary to remove pins.
Always use proper eye protection during this step.
Utilization of the extension jack at this time will aid in pin
hole alignment to facilitate pin removal.
9. Using lift function, raise boom to a horizontal position.
10. Using extend function, extend boom approximately 1
foot.
11. Using tag line attached to extension sheave case, slowly
swing extension into stow position (parallel with 1
st
section boom). Pins C1 are the extension pivot points
during this operation.
12. Install extension swing pin B with spring clip through
extension ear and boom sheave case holes. This pin will
keep the extension assembly in line (parallel) with the 1
st
section boom. Pin B does not retain the extension in its
stowed position on the 1
st
section boom.
13. Using boom telescope function, slowly retract boom.
The ramp/side stow bracket assembly on the side of the
1
st
section extension will engage the hook on the side of
CAUTION
Use caution when swinging extension to avoid
unnecessary impact with 1st section boom
Fo
r
Reference
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