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
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Unscrew retaining nut 26 and pull off stem collector assembly, items 18, 20, 21, 22, 23, 24, 25 and 'O' ring 19.
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Pull off stem collector adaptor 15.
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Using the 'T' spanner* remove end cap 27 together with seal 17 'O' ring 16 and lip seal 28.
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Remove spring 29 and spring seat 54.
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Loosen locknut 3 with a spanner* then unscrew jaw spreader housing 1 and 'O' ring 2.
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Remove locknut 3 together with 'O' ring 43 and 7 lip seal.
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Push head piston 8 to the rear and out of head assembly 4 taking care not to damage the cylinder bore.
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Using circlip pliers* remove seal retainer 30. Push lip seal 9 to the rear and out of head assembly 4 taking care again not to damage
the cylinder bore.
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Remove seal housing 6 and lip seal 53.
Assemble in reverse order to dismantling noting the following points:
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Place lip seal 9 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.
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The chamfered edge of seal retainer 30 must face forward with the gap at the bottom.
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After fitting seals 12, 52 and 13 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 8 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.
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Jaw spreader housing 1 must be fully tightened onto head piston 8 before tightening locknut 3 against it.
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Use Loctite 932 when reassembling retaining nut 26.
Tr i g g e r
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Using the 2 millimetre diameter pin punch*, drive trigger pin 42 out and lift off trigger 41.
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Unscrew trigger valve 40 using the trigger valve extractor*.
Assemble in reverse order to dismantling.
Item numbers in bold refer to the general assembly drawings and parts lists pages 22-25.
* Item included in the G2-s service kit. For complete list see page 18.
E n g l i s h
19