Dismantling Instructions; Before Dismantling - Stanley 734 AV Serie Manual De Instrucciones

O R I G I N A L I N S T R U C T I O N
Hydraulic oil is available to order under the following part numbers.
PART NUMBER
Enerpac® Part Number
Volume
Viscosity

5.7 DISMANTLING INSTRUCTIONS

IMPORTANT – ENSURE THE MAINS POWER SUPPLY TO THE HYDRAULIC PUMP UNIT IS SWITCHED OFF BEFORE REMOV-
ING THE NOSE ASSEMBLY OR DISMANTLING THE PLACING TOOL.

Before Dismantling:

• Uncouple the Quick Couplers 10 and 11 and the electrical Control Cable 14 between the placing tool and the Hydraulic
Hose Assembly.
• Remove the nose assembly from the placing tool as per the instructions in the relevant nose assembly datasheet.
• The potentially dangerous substances that could have deposited on the machine as a result of work processes must be
removed before maintenance.
For a complete service of the tool, we advise that you proceed with dismantling the tool in the order shown on pages 13 to
15. After dismantling the tool we recommend that you replace all seals.
Head Piston Assembly:
• Using a small flat screwdriver, remove the Pin 41 from the Collet Adapter 40.
• Unscrew and remove the Collet Adapter 40 from the Piston 1.
• Clamp the tool handle in a vice with soft jaws so that the tool is pointing nose down.
• Connect the spare *Quick Coupler – Male to the Quick Coupler – Female 11 on the Hydraulic Hose - Return 18. This will
release any pressure from the return side of the Piston 1 and ease the removal of the End cap 17.
• Insert the *End Cap Assembly Tool body into the End Cap 17.
• Using a 24 mm A/F spanner, unscrew and remove the End Cap 17, from the Body 2.
• Using a small flat screwdriver, remove O-Ring 21 from the End Cap 17 and discard.
• Using a small flat screwdriver or similar tool, remove O-Ring 30 and Spiral Back-up Ring 36, from the external groove on the
End cap 17, and discard. When removing the seals, take care not to damage the surface of the End cap with the screwdriver.
• Remove the placing tool from the vice and empty the hydraulic oil from the rear of the tool. Remove the spare *Quick
Coupler – Male from the Quick Coupler – Female 11.
• Connect the spare *Quick Coupler - Female to the Quick Coupler – Male 10 on the Hydraulic Hose - Pull 19. This will
release any pressure from the pull side of the Piston 1 and ease the removal of the Piston 1.
• Screw the *Piston Bullet - Front on to the front of the Piston 1.
• Place the Body 2 nose up on a bench. Then using a soft mallet, tap the Piston 1 towards the rear of the Body and out the
back end, taking care not to damage the bore within the Body.
• Note that when removing the Piston 1, oil on the pull side of the Piston will leak from the front and rear of the Body 2.
• When removing the Piston 1, the Front Seal Gland 15 may be retained on the Piston shaft. If this is the case, unscrew the
*Piston Bullet - Front and pull the Front Seal Gland off of the Piston.
• The Piston Seal 26 is a 2-piece seal consisting of an external sealing ring and an inner O-ring. Using a small knife,
cut through the external sealing ring and remove from the external groove on the Piston 1. Then using a small flat
screwdriver remove the inner O-ring from the Piston, and discard. When removing the seals, take care not to damage the
surface of the Piston.
• If the Front Seal Gland 15 is still retained in the Body 2. Place the Body nose up on a bench and then push the Front Seal
Gland from the front until it is free from the recess within Body. The Front Seal Gland can then be removed from the back
end of the Body. Take care not to damage the bore within the Body when doing so.
All numbers in bold refer to the General Assembly and Parts List on pages 16, 17and 18.
* Service Kit on page 12.
HYDRAULIC OIL
07992-00081
HF-95X
1 Litre
32 mm2/s
07992-00082
HF-95Y
5 Litres
32 mm /s
2
E N G L I S H
07992-00083
HF-95T
20 Litres
32 mm2/s
13