Avdel 753 MkII type Betriebsanleitung Seite 65

M a i n t e n a n c e
D i s m a n t l i n g 0 7 5 3 0 - 0 2 2 0 0 M k I I
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 49 and remove. Take care to keep the Spring 50.
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Prise off the 'O' Ring 53 taking care not to damage the Spindle 54 and Retainer 49 seatings.
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Clean and re-assemble using a new 'O' Ring 53.
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Check length of Spring 50 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 valve, proceed as follows:
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Disconnect air hose from assembly, taking care not to damage them. Remove assembly.
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Using an Allen Key*, loosen Screw 27 clamping assembly to Barrel 25 and remove assembly.
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Using a screwdriver*, carefully remove the Chrome Star-lock Washer 26 from Air Tail Jaw Spool 29 and discard washer.
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Extract Air Tail Jaw Spool 29 from Switch Block 28.
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Taking care not to damage the Air Tail Jaw Spool 29, remove the 'O' Rings 31.
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Clean spool and refit new 'O' Rings 31 using assembly bullet* and insert into Switch Block 28, noting its orientation.
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Fit New Chrome Star-lock Washer 26 by clamping in vice using a soft jaw vice to prevent damage. DO NOT USE UNDUE FORCE.
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Complete assembly in reverse order of dismantling.
TAIL JAW PRESSURE NON-RETURN VALVE
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The Non-return Valve 21 is located in the tool handle.
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To remove/replace the Non-return Valve 21 depress the bulk head fittings and withdraw the Blue Plastic Tube 23 from both ends.
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When replacing the Non-return Valve 21, note the orientation.
HANDLE & END CAP
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Clean and inspect mouldings for cracks or other damage.
CURSOR
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Clean and oil Mechanical Cursor Assembly 5 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 23.
Item numbers in bold refer to the general assemblies and parts lists on pages 28-29.
I M P O R T A N T
Check the tool against daily and weekly servicing.
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