Tadano TT-800XXL1, Service Manual

Page: 134 / 267

25
W 1 83-0 1 3 1 E
G-6 G-6
Hose Reel
2. Dismounting
[NOTICE]
When the circuit is suspected to retain high
pressure oil, be sure to vent pressure before
dismounting the hose reel.
Since the spring force for extra winding turns is
applied to the hose, hold the drum when
disconnecting the hose.
3. Mounting
[NOTICE]
After installation and bleeding the circuit and the
device, test the operation check and check any
abnormality.
1 . After making sure that the whole hose is reeled in,
turn the reel further (for 4.5 - 5.5 turns).
2. Draw out the hose and install it.
4. Disassembly
[NOTICE]
This process is very dangerous. Take extreme
caution in executing it to secure safety.
1 . Unscrew hexagon socket set screws, and remove
support from spring case .
2. Unscrew nuts, and remove drum plates from
spring case.
3. After attaching protection plates as shown,
utilizing the case mounting holes, to prevent
spring from hurtling out, unscrew special bolt on
the pin side, and extract pin.
4. To replace spring, remove it from spring case as
follows:
1 ) Remove the protection plate from the case 4
and secure the case 4 in a sufficiently wide
space.
2) Tie one end of a wire of a sufficient length to
the inner end of the spring 5 and pull the other
end of the wire by hand to take out the spring 5.
5. Reassembly
1 . Install seal rings and backup rlngs on pin, apply
grease thinly on these rings and their surrounding
areas,and install the pin in spring case.
2. To reinstall spring in case proceed as follows:
[NOTICE]
If the spring recoils, it may hurt personnel. Be sure
to clamp it securely with vice pliers.
Clamp with vice pliers, paying attention to the
installation orientation of the spring.
1 ) With spring clamped by vice pliers, remove
the spring holder constricting the spring.