(Ref. fig. 1)
•
Switch OFF air supply at ON/OFF Valve (
7
.)
•
Remove all nose equipment (
1
.) Refer to section 3.1.
•
Remove Bleed Screw (
4
)and Seal (
5.
)
•
Invert tool over suitable container, switch ON air supply at ON/OFF Valve Assembly (
7
)and actuate tool.
•
Residual oil in the tools hydraulic system will empty through bleed screw orifice.
For complete tool servicing we advise that you proceed with dismantling of sub-assemblies in the order
shown below.
Refer to fig. 7 & 8.
6.1 DISMANTLING THE TOOL
6.1.1 Nose Equipment
•
Unscrew the Nose Casing (
1e
), including the Nose Piece (
1a
), and O Ring (
1f
).
•
Pull back the Jaw Guide Lock (
1m
) against the Spring (
1n
) and then unscrew the Jaw Guide (
1g
).
•
Remove the Jaws (
1h
) from the Jaw Guide (
1g
).
•
At this point the Jaws (
1h
) can be cleaned and a light coating of Moly Lithium grease applied or replaced
if worn.
•
Remove Jaw Pusher (
1i
), O Ring (
1j
), and Spring
(
1k
), from the Pulling Head (
1l
).
•
Using spanners, loosen Locknut (
8
)and unscrew the Pulling Head Adapter (
1o
), Pulling Head (
1l
), Jaw
Guide Lock (
1m
) and Spring (
1n
)
from the tool piston.
•
Removal of the Pulling Head (
1l
), Jaw Guide Lock (
1m
)
and Spring (
1n
) from the Pulling Head Adapter (
1o
)
should not be necessary.
Reassemble as follows:
•
Any worn or damaged part should be replaced.
•
Clean and check wear on Jaws.
•
Ensure that the Jaw Pusher (
1i
) or the Spring (
1k
)
are not distorted.
•
Assemble in reverse order to the removal instructions above.
•
Lightly coat Jaws (
1h
) with Moly Lithium grease.
•
Drop Jaws (
1h
) into the Jaw Guide (
1g
).
•
Insert Jaw Pusher (
1i
) and O Ring (
1j
)
into the Pulling Head (
1l
).
•
Pull back the Jaw Guide Lock (
1m
)
and screw the Jaw Guide (
1g
)
fully on to the Pulling Head (
1l
). Release
the Jaw Guide Lock (
1m
)
and then partially unscrew the Jaw Guide (
1g
) until the Jaw Guide Lock (
1m
) tooth
clicks into the next slot on the Jaw Guide (
1g
).
•
Place Nose Casing (
1e
) over the Jaw Guide (
1g
) and screw fully onto the tool.
6.1.2 Head Assembly
•
Rotated the Stem Collector (
3
)anti-clockwise and remove from the Collector Adapter (
27
). Refer to fig. 3.
•
Unscrew the Deflector Retaining Nut (
29
)
together with the Deflector (
28
).
•
Pull off the Collector Adapter (
27
)
and O ring
(
59
).
•
Unscrew the End Cap Assembly (
25
)
together with O ring (
26
)
and O ring (
58
). Care should be taken as the
End Cap Assembly will be under load from the Spring (
22
).
•
Remove Spring (
22
).
•
Unscrew and remove Locknut
8
from the Piston Assembly (
19
).
•
Push the Piston Assembly (
19
), together with the Ejector Nozzle (
23
)
and O rings (
24
),
to the rear and out
of the Head Assembly (
12
) taking care not to damage the cylinder bore or piston shaft.
•
Using circlip pliers (07900-00164) remove the seal retainer (
17
) then push the Rod Seal (
16
)
and Bearing
Tape
(
15
) to the rear and out of the Head Assembly (
12
).
•
Remove the Seal Housing (
10
)
and Lip Seal (
11
).
ENGLISH
18
