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M a i n t e n a n c e
D i s m a n t l i n g P ro c e d u r e s
HANDLE ASSEMBLY
•
Connect tool to air supply.
•
Depress Trigger 87 and hold.
•
Disconnect air supply and release trigger.
•
Remove Screws 50 using Allen key*.
•
Lift off Head Assembly 53.
•
Poor oil from handle into suitable container.
•
Using a spanner, remove Swivel Bolt 23.
•
Using Allen key*, remove four Screws 44 and lift off Valve Assembly 18.
•
Stand handle upside down and remove Retaining Ring 38 using a suitable screwdriver.
•
Lift out Base Cover 35.
•
Using a suitable screwdriver remove Retaining Ring 36.
•
Locate stop ring* over base of Handle 2.
•
Place base removal tool* over base of Handle 2 and align two screws in removal tool with two tapped holes in Handle Base 34.
•
Engage and tighten two screws provided. Screw down three remaining screws until Handle Base 34 is released.
•
Remove Retaining Ring 33, Buffer Assembly 32 and 'O' Ring 37 from Handle Base 34.
•
To remove Air Piston Sub-assembly 40 insert piston rod wrench* into top of power Piston Assembly 47.
•
3
Using a suitable
/
" socket and extension bar unscrew Nut 39.
8
•
Tap power Piston Assembly 47 out of Air Piston Sub-assembly 40.
•
Insert pip pin* into hole in Air Piston Sub-assembly 40 and withdraw air piston sub-assembly from Handle 2.
•
Remove Seal 31 from Air Piston Sub-assembly 40.
•
Push power Piston Assembly 47 out of top of Handle 2. Remove Seal 48 and Anti-extrusion Ring 49.
•
Place Handle 2, air cylinder upwards in bench vice fitted with soft jaws.
•
Using packing plug wrench tool*, engage dogs on tool into holes in Packing Plug 3 and unscrew.
•
Remove 'O' Ring 13 from Handle 2.
•
Remove Retaining Rings 10 from both ends of Packing Plug 3 and lift out Washer 6, Seal 12 and Anti-extrusion Ring 5 from top
Packing Plug 3.
•
Lift out Washer 6 and 'O' Ring 4 from bottom of Packing Plug 3.
•
Remove Handle 2 from bench vice and stand upright, i.e. on air cylinder.
•
Using power cylinder installation and removal tool*, tap Power Cylinder 8 downwards until free.
•
Remove Seal 9 from Power Cylinder 8 and 'O' Ring 11.
•
Remove Trigger Sleeve 89 with box spanner*.
•
Pull out Trigger 87 and remove 'O' Ring 88.
•
Assemble Seal 9 onto Power Cylinder 8 using 'O' ring assembly tool*.
•
Before fitting Power Cylinder 8 to Handle 2, place power piston assembly sleeve* over Seal 9. Replace 'O' Ring 11 onto Power
Cylinder 8.
•
Before fitting power Piston Assembly 47, fit power piston bullet* over rod and power piston assembly sleeve* over piston.
•
Before fitting 'O' Rings 24 to Swivel Bolt 23, place swivel adaptor bullet* over swivel bolt threads.
•
Complete assembly in reverse order to dismantling. Ensure seals and anti-extrusion rings are fitted in the right order.
•
When re-attaching Head Assembly 53 to Handle Assembly 1, care must be taken to ensure correct alignment between Gasket 51,
'O' Ring 95 and Screws 50.
•
To assist with alignment, apply a thin coat of Molycote 111 grease to the upper surface of Gasket 51 and then stick the gasket to
the base of Head assembly 53 ensuring correct alignment with 'O' Ring 95 and the screw holes.
•
Any overlap between Gasket 51 and 'O' Ring 95 must be avoided.
•
The grease will hold Gasket 51 in the correct position when attaching head Assembly 53 to Handle Assembly 1.
* Refers to items included in the 07220 Service Kit. For complete list see page 14.
Item numbers in bold refer to General Assembly drawings and Parts List (pages 18-19).
16
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