Pneumatic Piston Assembly; Valve Spool Assembly - avdel Genesis 7537 Manual De Instrucciones

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 Molykote
®
Molykote III for hydraulic sealing.
The employer is responsible for ensuring that tool maintenance instructions are given to the appropriate personnel.
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.
D i s m a n t l i n g 0 7 5 3 7 - 0 0 2 0 0
REMOVAL OF THE HEAD MOULDINGS
•
Manually flip the Clip 48 up and remove the End Cap 50.
•
Using an Allen Key*, remove the three securing Screws 2 and Nuts 7 from the tool body assembly and one Screw 97 from the
LH Body Moulding 60.
•
Remove the RH and LH Body Moulding 59 and 60.
•
Assemble in reverse order of dismantling.

PNEUMATIC PISTON ASSEMBLY

•
Clamp the Body 72 of the inverted tool across the air inlet bosses in a vice fitted with soft jaws.
•
Pull off the Rubber Boot 67.
•
Using the peg spanner* unscrew Base Cover 73.
•
Unscrew Locknuts 6 (2 off) and remove the Base Plate 77.
•
Remove the Cylinder Liner 75, together with Sealing Washers 78 (2 off) and 'O' Rings 9 (2off).
•
Remove Pneumatic Piston Assembly 58 from Body 72 together with 'O' Ring, Lip Seal (3 off) and Guide Ring.
•
Assembly in reverse order.

VALVE SPOOL ASSEMBLY

•
Remove Pneumatic Piston Assembly 58 and Intensifier Seal Assembly 71 as described immediately above.
•
Using the 'T' spanner* and location spigot* undo Clamp Nut 64 and remove it together with Top Plate 76, Tie Rods 74 and
Transfer Tube Assembly 69.
•
Release the tool from the vice and separate Body 72 with 'O' Ring 20 from Handle Assembly 57.
•
Pull off the Head Assembly 56 from Handle Assembly 57 and remove 'O' Ring 19 from the intensifier tube.
•
Push out Valve Seat 62 together with both 'O' Rings 18 (2 off).
•
Remove all the components of Valve Spool Assembly 68.
•
Finally remove 'O' Ring 18 out of the handle counter bore.
•
Assemble in reverse order to dismantling ensuring that the central port in Valve Seat 62 faces upwards towards"O" Ring 17.
TRIGGER
•
Using the 2 millimeter diameter pin punch*, drive Trigger Pin 65 out and lift off Trigger 61.
•
Unscrew Trigger Valve 24 using the trigger valve extractor*.
•
Assemble in reverse order to dismantling.
* 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.
24
I M P O R T A N T
Safety Instructions appear on page 4.
®
55m grease for pneumatic sealing or