Degometal GO 41 Instructions De Sécurité Et Mode D'emploi page 22

PNEUMATIC CYLINDER
• Remove rubber base 2.
• Place tool, base uppermost in vice fitted with soft jaws.
• Using a spanner*, unscrew end plug 3. Pneumatic piston 9 should move upward under spring 11
pressure (it may be necessary
to exert hand pressure to pneumatic piston 9).
• Remove 'O' ring 4.
• Withdraw pneumatic piston 9.
• Remove lip seal 8 and 'O' ring 36.
• Hold piston rod 10 in soft vice jaws to avoid scratching rod diameter.
• Separate piston rod 10 from pneumatic piston 9 by unscrewing piston rod fastening bolt 5 using a
spanner*.
• Inspect air tube 12 for damage or distortion. (Air tube is screwed internally into handle and set in
position with Loctite 222) If it is necessary to remove air tube, the base of the air tube will require
warming to a temperature of 1 OOo C to soften the Loctite adhesive. The air tube 12 can then be
unscrewed from the handle using an Allen key*.
• Check spring 11 is not distorted or damaged.
• Assembly is in reverse order to dismantling.
ROD GUIDE
With tool in upside down position in vice, unscrew rod guide 15 using a spanner* and T-bar*.
• Withdraw rod guide 15.
• Unscrew locknut 13 using an Allen key*, remove seal 14 and 'O' ring 98.
• Remove 'O' ring 16.
• Assembly is in reverse order to dismantling.
TRIGGER
With tool held in vice, remove pin 26 using a pin punch*.
• Remove trigger 25, pin 22, roller 23 and push wedge 24.
• Gently push on the head of trigger rod 20 and, remove together with 'O' rings 7 and 21, guide 19, lip
seal 18 and plug 17.
• Assembly is in reverse order to dismantling. Ensure lip of lip seal 18 is towards head of tool.
DIFFERENTAIL VALVE
Using special flat spanner* unscrew valve locking plug 27, withdraw and remove spring 104 and 'O'
ring 29.
• Remove silencer 34 using a spanner* and remove nylon washer 33.
• Push valve piston 28 out from its housing together with 'O' rings 30, 31 & 32.
• Check spring 104 for distortion and renew if required.
• Assemble in reverse order of dismantling..
HEAD ASSEMBLY
Remove nose equipment prior to commencing dismantling.
• Using spanners* remove spindle 44 and locknut 45.
• Remove return spring locknut 46 using a spanner*.
• Remove return spring 47, washer 99 and locking ring 102-
• Check return spring 47 for distortion and renew if required.
• Assemble in reverse order of dismantling.
REAR CASING
Using an Allen key* remove screw 40 from stroke set finger 88 and lift off bridge washer 95.
• Disengage stroke set finger 88 by pushing it back against spring 89.
• Unscrew rear casing 86.
• Remove rear casing rubber band 87 if necessary.
• Extract circlip 84 using circlip pliers* and remove sintered silencer 85.
• Complete assembly in reverse order of dismantling.
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