7.  Maintenance
I M P O R TA N T
SAFETY INSTRUCTIONS APPEAR ON PAGE 9 & 10. 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.
Every 500,000 cycles the tool must be completely dismantled and inspected Components must be replaced 
where worn or damaged. All ‘O’ rings and seals should be replaced with new ones and lubricated with 
Molykote 55M grease before assembling.
  WARNING - The airhose must be disconnected before any servicing or dismantling is attempted unless 
       specically instructed otherwise.
    -  Dismantling operation be carried out in clean conditions.
    -  Before proceeding with dismantling, empty the oil from the tool. Remove oil plug 45, from  
        the handle assembly and drain the oil into a suitable container.
    -  Prior to dismantling the tool it is necessary to remove the nose assembly. For simple removal  
       instructions see page 13 (4.1) 
For complete tool servicing we advise that you proceed with dismantling of sub-assemblies in the order 
shown below. See Fig. 5 (page 5)
For complete tool strip down two additional tools a required. 
Part Number Description QTY
07900-01074 Assembly Bullet 1
07900-01075 Seal Guide 1 
Pneumatic Cylinder
•  Remove Rubber Boot 5.
•  Place tool with the base facing upwards in a vice tted with soft jaws.
•  Using a 8mm spanner remove the Tie Rod Nut 53 and Washer 52 the Air Cylinder 2 should move upward 
under spring pressure.
•  Remove Base Cap 76 with 3mm Hexagonal Wrench.
•  Withdraw Air Piston Assembly 3 separate Assembly by holding Piston Rod in soft jaws and unscrewing the 
Piston.
•  Remove the spring 49
Rod Guide
•  Unscrew the Rod Guide 7 using a 22mm socket and T bar.
•  Withdraw the Rod Guide 7 and Washer 50. Remove the lip seal 51 and O ring 59.
Trigger
•  Remove Trigger Pin 48.
•  Remove Trigger 12.
•  Unscrew Bezel Switch 10 using a 10mm Socket.
•  Withdraw Bezel Switch 10, Trigger Valve 11 and Spring 47 
18
ENGLISH