Stanley 0753 MKII Instruction And Service Manual page 19

O R I G I N A L I N S T R U C T I O N
To replace Seal 1, disconnect Hydraulic Hose Assembly 63 and all the associated air pipes. Unscrew Self Closing Coupler
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6, remove Suspension Mounting Plate 4, unscrew the Adapter Top Hose 2 and fit a spare Bleed Plug Assembly 30
screwing it into bring the inside face level with the internal bore.
• Unscrew existing bleed plug until inside face is level with internal bore. This will provide a smooth passage for insertion
of new Seal 1 through rear of body.
• Ensure the seal is well greased and the correct way round with the open end of the seal facing the rear tail jaws.
• Complete assembly in reverse order of dismantling.
TRIGGER ASSEMBLY
• To dismantle/service assembly, remove covers from the tool as described earlier.
• Disconnect all air hoses from assembly, taking care not to damage them. Remove assembly.
Using a spanner*, unscrew the Retainer 56 and remove. Take care to keep the Spring 57.
•
Prise off the 'O' Ring 60 taking care not to damage the Spindle 61 and Retainer 56 seatings.
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• Clean and re-assemble using a new 'O' Ring 60.
Check length of Spring 57 which must be 12.7mm (0.5") free length – replace if necessary.
•
• Assembly in reverse order of dismantling.
TAIL JAW ON/OFF VALVE
• The unit is designed so that minimum of servicing is required during the life of the tool.
• If it is necessary to dismantle valve, proceed as follows:
• Disconnect air hose from assembly, taking care not to damage them. Remove assembly.
• Using an Allen Key*, loosen Screw 34 clamping assembly to Barrel 31 and remove assembly.
Using a screwdriver*, carefully remove the Chrome Star-lock Washer 33 from Air Tail Jaw Spool 36 and discard washer.
•
• Extract Air Tail Jaw Spool 36 from Switch Block 35.
Taking care not to damage the Air Tail Jaw Spool 36, remove the 'O' Rings 38.
•
Clean spool and refit new 'O' Rings 38 using assembly bullet* and insert into Switch Block 35, noting its orientation.
•
• Fit New Chrome Star-lock Washer 33 by clamping in vice using soft Jaws to prevent damage. DO NOT USE UNDUE
FORCE.
• Complete assembly in reverse order of dismantling.
TAIL JAW PRESSURE NON-RETURN VALVE
The Non-return Valve 26 is located in the tool handle.
•
• To remove/replace the Non-return Valve 26 depress the bulk head fittings and withdraw Blue Plastic Tube 27 from both
ends.
When replacing the Non-return Valve 26, note the orientation.
•
HANDLE & END CAP
• Clean and inspect mouldings for cracks or other damage.
CURSOR
Clean and oil Mechanical Cursor Assembly 11 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 15.
Item numbers in bold refer to the general assemblies and parts lists on pages 22-23.
IMPORTANT
Check the tool against daily and weekly servicing.
E N G L I S H
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