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O R I G I N A L I N S T R U C T I O N
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Hold the tool firmly and pull the Barrel 44 from the Body 45 (a small quantity of hydraulic oil may be ejected from inside
the head assembly).
Remove Piston 39 carefully so as not to damage head bore.
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Remove Seal 16.
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Seal 17 is difficult to remove without damaging, but can remain in place during cleaning (provided it is not affected by
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cleaning process). If however, Seal 17 requires renewing proceed as follows:
Using spatula*, prise out Seal 17 from Body 45, taking care not to damage body cavity and bores. The removed Seal 17
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MUST be discarded.
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To replace Seal 17, unscrew Bleed Plug Assembly 43 until inside face is level with internal bore of the Body 45. This will
provide a smooth passage for insertion of a new Seal 17 through rear of Body 45.
Ensure the Seal 17 is well greased and the correct way round with the open end of the seal facing the rear tail jaws.
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Complete assembly in reverse order of dismantling.
TRIGGER ASSEMBLY
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To dismantle/service assembly, remove covers from the tool as described earlier.
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Disconnect all air hoses from assembly, taking care not to damage them. Remove assembly.
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Using a spanner*, unscrew the Retainer 34 and remove. Take care to keep the Spring 31.
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Prise off the 'O' Ring 10 taking care not to damage the Spindle 35 and Retainer 34 seatings.
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Clean and re-assemble using a new 'O' Ring 10.
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Check length of Spring 31 which must be 12.7mm (0.5") free length – replace if necessary.
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Assembly in reverse order of dismantling.
TAIL JAW ON/OFF VALVE
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The unit is designed so that minimum of servicing is required during the life of the tool.
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If it is necessary to dismantle the valve, proceed as follows:
Remove Trigger Housing 56 as described in section "Hydraulic Piston".
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Using a screwdriver*, carefully remove the Chrome Star-lock Washer 18 from Air Tail Jaw Spool 55 and discard washer.
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Extract Air Tail Jaw Spool 55 from Switch Block 54.
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Taking care not to damage the Air Tail Jaw Spool 55, remove the 'O' Rings 12.
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Clean spool and refit new 'O' Rings 12 using assembly bullet* and insert into Switch Block 54, noting its orientation.
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Fit New Chrome Star-lock Washer 18 by clamping in a soft jaw vice to prevent damage. DO NOT USE UNDUE FORCE.
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Complete assembly in reverse order of dismantling.
HANDLE & END CAP
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Clean and inspect mouldings for cracks or other damage.
CURSOR
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Clean and oil cursor assembly occasionally with a little light oil.
Priming is ALWAYS necessary after the tool has been dismantled and prior to operating.
* Refers to items included in the 0753 Mkll Service Kit. For complete list see page 14.
Item numbers in bold refer to the general assemblies and parts lists on pages 18-19.
IMPORTANT
Check the tool against daily and weekly servicing.
E N G L I S H
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