S e r v i c i n g t h e To o l
P n e u m a t i c P i s t o n A s s e m b l y
•
Remove 'ON/OFF' valve assembly 55.
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Clamp the body of the inverted tool across the air inlet bosses in a vice fitted with soft jaws.
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Using the peg spanner* unscrew base cover 36 and pull out cylinder liner 41.
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Remove pneumatic piston assembly 38 from body 34 together with 'O' ring 35, lip seal 37 and guide ring 31.
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Screw the seal extractor* into seal assembly 30 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
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Remove pneumatic piston assembly 38 and seal assembly 30 as described immediately above.
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Using the 'T' spanner* and 'T' spanner spigot* undo clamp nut 32 and remove it together with clamp plate 58, transfer tube assembly 40
and valve rod 39.
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Release the tool from the vice and separate body 34 with 'O' ring 27 from handle assembly 28.
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Remove 'O' ring 29 from the intensifier tube and pull off head assembly 4 from handle assembly 28.
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Push out valve seat 59 with both 'O' rings 66.
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Pull out all the components of valve spool assembly 49.
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Finally remove 'O' ring 54 out of the handle counterbore.
Assemble in reverse order noting the following points -
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Ensure that the central port in valve seat 59 faces upwards.
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Use Loctite 243 when reassembling Clamp Nut 32, torque to 11ft lb (14.91 Nm).
Tr i g g e r
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Using the 2 millimetre diameter pin punch*, drive trigger pin 44 out and lift off trigger 43.
•
Unscrew trigger valve 42 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 G2 service kit. For complete list see page 18.
Item numbers in bold refer to the general assembly drawing and parts list on pages 22-23.
20
I M P O R T A N T
Check the tool against daily and weekly servicing.