Maintenance - Avdel 07536 Manuel D'instructions

M a i n t e n a n c e
Every 500,000 cycles the tool should be completely dismantled and new components should be used where worn, damaged or when
recommended. All 'O' rings and seals should be renewed and lubricated with Moly Lithium grease EP 3753 before assembling.
The employer is responsible for ensuring that tool maintenance instructions are given to the appropriate
The operator should not be involved in maintenance or repair of the tool unless properly trained.
The airline must be disconnected before any servicing or dismantling is attempted, unless specifically instructed otherwise.
It is recommended that any dismantling operation be carried out in clean conditions.
Prior to dismantling the tool, you will need to remove the nose equipment.
For total tool servicing we advise that you proceed with the dismantling of sub-assemblies in the order shown below after having
disconnected the hydraulic hose from the intensifier unit, air lines from the intensifier and control box, thus separating the pistol unit
from the intensifier unit.
D i s m a n t l i n g 0 7 5 3 6 - 0 2 2 0 0
TAIL JAW CYLINDER
•
Manually flip the retaining Clip 53 up and remove the End Cap 59.
•
Using an Allen Key*, remove one Cap Head Screw 6 ensuring that any trapped air in the tail jaw cylinder is exhausted. Remove
the second Cap Head Screw 6.
•
Pull out Rear Plug 50. Note: To aid extraction there is a 5mm thread on the rear face of the plug.
•
Extract air tail jaw components, comprising Tail Jaw Piston Assembly 60, Stop 52, 'O' Ring 12 and Jaws 32.
•
Extract the remaining components, comprising of Spring 36 and Jaw Housing 42.
•
Free length of spring 36 should be 38.1mm (1.5"). Replace if necessary.
•
Remove piston assembly seal 'O' Ring 11.
•
Disconnect Air Cursor Concertina Tube (Green) 49 from Elbow Connector 22.
•
Disconnect Air Cursor Concertina Tube (Silver) 38 from Barb Elbow 30.
•
Using an Allen Key*, remove all five handle moulding securing Screws 3, 4 and all four Nuts 8 from the tool handle.
•
Grip Barrel 44 in a vice using soft jaws* to avoid damage.
•
Using a box spanner*, unscrew Barrel Plug 46, preventing Barrel 44 turning by using an open ended spanner*.
•
Pull the Tail Jaw Cylinder 47 from the tool.
•
Remove 'O' Ring 14, Rubbing Strip 41 and Barrel Return Spring 37.
•
Coat the face of Tail Jaws 32 with Moly Lithium grease, in contact with Jaw Housing 42, before assembling.
•
Assemble in reverse order of dismantling.
HYDRAULIC PISTON
•
Remove Tail Jaw Cylinder 47 as described earlier.
•
Grip Body 45 in vice using soft jaws* to avoid damage, undo Stroke Limiter 40.
•
Using an Allen Key*, loosen Screw 5 that is clamping the Switch Block 54 to the barrel 44.
•
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.
•
Remove Seal 16.
•
Seal 17 is difficult to remove without damaging, but can remain in place during cleaning (provided it is not affected by 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 MUST
be discarded.
•
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.
•
Complete assembly in reverse order of dismantling.
* Refers to items included in the 0753 Mkll Service Kit. For complete list see page 12.
Item numbers in bold refer to the general assemblies and parts lists on pages 16-17.
14
I M P O R T A N T
Safety Instructions appear on page 4.
personnel.