avdel Genesis 7537 Manual De Instrucciones página 57

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 7 - 0 0 2 0 0
TAIL JAW CYLINDER
•
Using an Allen Key*, remove one cap head Screw 5 ensuring that any trapped air in the tail jaw cylinder is exhausted. Remove
the second cap head Screw 5.
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Pull out Rear Plug 47.
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Extract air tail jaw components, comprising Tail Jaw Piston Assembly 51, Spring 35, Jaws 34 and Jaw Housing 41.
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Remove plug at rear of piston assembly using an Allen Key* and a bar through the large slot in the turret.
•
Clean out turret using a 4.7mm (
574*.
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Remove piston seal 'O' Ring 10.
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Grip Barrel 44 in a vice using soft jaws* to avoid damage.
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Using a box spanner*, unscrew Barrel Plug 45, preventing Barrel 44 turning by using an open ended spanner*.
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Disconnect Air Tail Jaw Concertina Tube 54 from Head Assembly and pull Tail Jaw Cylinder 46 from tool.
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Remove 'O' Ring 13, Rubbing Strip 40 and Barrel Return Spring 37.
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Free length of Spring 35 should be 38.1mm (1.5"). Replace if necessary.
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Coat the tail jaws with Moly Lithium grease before assembling.
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Assemble in reverse order of dismantling.
HYDRAULIC PISTON
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Remove Tail Jaw Cylinder 46 as described earlier.
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Grip Head Assembly 56 in vice using soft jaws* to avoid damage, undo Stroke Limiter 39.
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Using an Allen Key*, loosen Screw 3 clamping the Switch Block 55 to the Barrel 44.
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Using an Allen Key*, remove the Switch Block 55 & O Ring 21, by undoing the securing Screw 4.
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Hold the tool firmly and pull the Barrel 44 from the body (a small quantity of hydraulic oil may be ejected from inside body).
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Remove Piston 38 carefully so as not to damage body bore.
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Remove Lip Seal 15.
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Lip Seal 16 is difficult to remove without damaging, but can remain in place during cleaning (provided it is not affected by cleaning
process). If however, Lip Seal 16 requires renewing proceed as follows:
•
Using spatula*, prise out Lip Seal 16 from Head Assembly 56, taking care not to damage head cavity and bores. The removed
Lip Seal 16 MUST be discarded.
•
To replace Lip Seal 16, unscrew existing Bleed Plug 43 until inside face is level with internal bore of the Head Assembly 56. This
will provide a smooth passage for insertion of new Lip Seal 16 through rear of body.
•
Ensure the Lip Seal 16 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.
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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Remove Switch Block 55 as described in section "Hydraulic Piston".
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Using a screwdriver*, carefully remove the Chrome Star-lock Washer 22 from Air Tail Jaw Spool 49 and discard washer.
•
Extract Air Tail Jaw Spool 49 from Switch Block 55.
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Taking care not to damage the Air Tail Jaw Spool 49, remove the 'O' Rings 11.
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Clean spool and refit new 'O' Rings 11 using assembly bullet* and insert into Switch Block 55, noting its orientation.
•
Fit New Chrome Star-lock Washer 22 by clamping in vice using a soft jaw vice to prevent damage. DO NOT USE UNDUE FORCE.
•
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 Mechanical Cursor 36 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 service kits 07900-05300 & 71210-99990. For complete list see page 23.
Item numbers in bold refer to the general assemblies and parts lists on pages 26-27.
3 / ") drill and replace plug using a non-hardening sealing compound, e.g. Loctite
16
I M P O R T A N T
Check the tool against daily and weekly servicing.
®
Multi-gasket
25