S e r v i c i n g t h e To o l
H e a d A s s e m b l y
Assemble in reverse order to dismantling noting the following points:
•
Place lip seal 6 onto the insertion rod* ensuring correct orientation. Push the guide tube* into the head of the tool and push the
insertion rod* with the seal into place through the guide tube*. Pull the insertion rod* out then the guide tube.
•
The chamfered edge of retainer 25 must face forward with the gap at the bottom.
•
After fitting seals 59, 9 and 10 onto the piston ensuring correct orientation, lubricate the cylinder bore and place the piston sleeve*
into the back of head assembly 4. Slide the bullet* onto the threaded part of piston 5 and push the piston with the seals through the
piston sleeve* as far as it will go. Slide the bullet* off the piston and remove the piston sleeve.
•
Jaw spreader housing 1 must be fully tightened onto head piston 5 before tightening locknut 3 against it.
•
Use Loctite 932 when reassembling Retaining Nut 21.
P n e u m a t i c P i s t o n A s s e m b l y
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Remove 'ON/OFF' valve assembly 53 and 'O' ring 44.
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Clamp the body of the inverted tool ACROSS THE AIR INLET BOSSES in a vice fitted with soft jaws.
•
Using the peg spanner* unscrew base cover 35 and pull out cylinder liner 40.
•
Remove pneumatic piston assembly 37 from body 33 together with 'O' ring 34, lip seal 36 and guide ring 30.
•
Screw the seal extractor* into seal assembly 29 and pull it out of the intensifier tube of head assembly 4.
Assemble in reverse order to dismantling.
Va l v e S p o o l A s s e m b l y
•
Remove pneumatic piston assembly 37 and seal assembly 29 as described immediately above.
•
Using the 'T' spanner* and 'T' spanner spigot* undo clamp nut 31 and remove it together with clamp plate 55, transfer tube 39 and
valve rod 38.
•
Release the tool from the vice and separate body 33 with 'O' ring 26 from handle assembly 27.
•
Remove 'O' ring 28 from the intensifier tube and pull off head assembly 4 from handle assembly 27.
•
Push out valve seat 56 with both 'O' rings 52.
•
Pull out all the components of valve spool assembly 46.
•
Finally remove 'O' ring 51 out of the handle counterbore.
Assemble in reverse order noting the following points -
•
Ensure that the central port in valve seat 56 faces upwards.
•
Use Loctite 243 when reassembling Clamp Nut 31, torque to 11ft lb (14.91 Nm).
Tr i g g e r
•
Using the 2 millimetre diameter pin punch*, drive trigger pin 43 out and lift off trigger 42.
•
Unscrew trigger valve 41 using the trigger valve extractor*.
Assemble in reverse order to dismantling.
Priming is ALWAYS necessary after the tool has been dismantled and prior to operating.
* Item included in the G1 service kit. For complete list see page 13.
Item numbers in bold refer to the general assembly drawing and parts list on pages 16-17.
14
I M P O R T A N T
Check the tool against daily and weekly servicing