Dismantling 07532-02200 Mkii - Avdel 753 MkII type Betriebsanleitung

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 2 - 0 2 2 0 0 M k I I
To dismantle the 07530-02200 MkII refer to pages 24-25.
TAIL JAW CYLINDER
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Manually flip the Clip 54 up and remove the End Cap 45.
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Using an Allen Key*, remove one cap head Screw 51 ensuring that any trapped air in the tail jaw cylinder is exhausted. Remove
the second cap head Screw 51.
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Push forward Rear Plug 53 against Spring 20 and release quickly to allow Rear Plug 53 to fall away.
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Extract air tail jaw components, comprising Tail Jaw Piston Assembly 21, Spring 20, Jaws 16 and Jaw Housing 15.
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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.
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Clean out turret using a 4.7mm (
574*.
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Remove piston seal 'O' Ring 17.
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Using an Allen Key*, remove all five handle moulding securing Screws 41, 46 and Nuts 40 from the tool handle.
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Grip Barrel 31 in a vice using soft jaws* to avoid damage.
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Using a box spanner*, unscrew Barrel Plug 14, preventing Barrel 31 turning by using an open ended spanner*.
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Disconnect Air Tail Jaw Concertina Tube 19 from Switch Block 35 and pull Tail Jaw Cylinder 12 from tool.
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Remove 'O' Ring 10, Rubbing Strip 22 and Barrel Return Spring 13.
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Free length of Spring 20 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 12 as described earlier.
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Grip Body 25 in vice using soft jaws* to avoid damage, undo Stroke Limiter 23.
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Grip Barrel 31 in soft jaw vice, pull Body 25 from Barrel 31 (a small quantity of hydraulic oil will be ejected from inside body).
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Remove Piston 24 carefully so as not to damage body bore.
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Remove Seal 9.
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Seal 1 is difficult to remove without damaging, but can remain in place during cleaning (provided it is not affected by cleaning
process). If however, Seal 1 requires renewing proceed as follows:
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Using spatula*, prise out Seal 1 from Body 25, taking care not to damage body cavity and bores. The removed Seal 1 MUST be
discarded.
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To replace Seal 1, disconnect Hydraulic Hose Assembly 63 and all the associated air pipes. Unscrew Self Closing Coupler 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.
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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.
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Ensure the seal 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.
* 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 30-31.
26
3
/ ") drill and replace plug using a non-hardening sealing compound, e.g. Loctite Multi-gasket
16