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Remove Head Piston 64 from Head 63. Remove Head Piston Seals 19, Anti-extrusion Rings 20 and Lip Seal 21 from
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Head Piston.
Using Seal Housing Push Rod* remove Seal Housing 52. Remove Lip Seal 17, Bearing Ring 54, Wiper 18 and 'O' Ring 23
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from Seal Housing
6.9 PROTECTING THE ENVIRONMENT
Assure conformity with applicable disposal regulations. Dispose all waste products at an approved waste facility or site so as
not to expose personnel and the environment to hazards.
6.10 ASSEMBLY INSTRUCTIONS
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All 'O' rings and seals should be renewed and lubricated with Molykote® 55m* for pneumatic seals or Molykote® 111*
for hydraulic sealing.
HEAD ASSEMBLY
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Using soft jaws to hold the tool Handle, position the tool in the nose-down orientation.
Install Bearing Ring 54, Lip Seal 17, Wiper 18 and 'O' Ring 23 on to Seal Housing 52.
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Fit Anti-extrusion Rings 20 to both seal grooves on Head Piston 64. Anti-extrusion Rings should be installed in seal
grooves close to breather hole into Head Piston, as shown in Detail 'C' on General Assembly drawing.
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Fit Head Piston Seals 19 to both seal grooves on Head Piston 64. Head Piston Seals should be installed in seal grooves
furthest from breather hole into Head Piston, as shown in Detail 'C' on General Assembly drawing.
Fit Head Piston Bullet* to Head Piston 64 and load Seal Housing assembly on to Head Piston.
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Before inserting Head Piston 64 into Head 63 fit Head Piston Seal Guide* to rear of Head. Once Head Piston 64 is
installed in the fully forward position, remove Head Piston Seal Guide and Head Piston Bullet.
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Before inserting Lip Seal 21 into Head 63 fit Rear Head Piston Bullet* to Head Piston 64 and Rear Lip Seal Sleeve* to rear
of Head. Use Rear Lip Seal Plunger* to insert Lip Seal up to stop.
Install Bearing Ring 53, Wiper 22 and 'O' Ring 6 into End Cap 51.
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Apply Loctite® 243* to thread of End Cap 51 and using 48mm A/F spanner screw End Cap into Head 63.
Fit Head Vice Jaw* to Head 63 and use soft jaws to hold the Head Vice Jaw in the inverted orientation.
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Fit Lip Seal 14 on to Return Piston 57.
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Fit Return Piston on to Return Piston Extractor* and insert into Head 63 to depth mark indicated on Return Piston
Extractor.
Apply Loctite® 243* to thread of Air Piston Rod End 59. Fit 4mm A/F Allen key into Air Piston Rod 58 and use 14mm A/F
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spanner or 5mm A/F Allen key to wind on Air Piston Rod End.
Fit Bearing Ring 60 on to Air Piston Rod End 59.
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Fit Air Piston Rod Bullet* to Air Piston Rod 58 and install Pull Piston 56, Lip Seal 14, Seal Stop 61, Lip Seal 15 and Bearing
Ring 62 in orientation and order shown on General Assembly.
Insert Air Piston Rod assembly into Head 63.
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Install Lip Seal 16 and 'O' Ring 12 into Seal Retainer 55.
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Apply Loctite® 243* to thread of Seal Retainer 55 and use Seal Retainer Wrench* to wind into Head 63.
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Remove Air Piston Rod Bullet*.
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Fit 2 'O' Rings 13 on to Head 63.
Install Trigger Valve 28 using Trigger Valve Extractor*.
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Fit Trigger 29 and insert Trigger Pin 30 into Head 63.
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Remove the Head Vice Jaw*. Using soft jaws to hold the tool Handle, position the tool in the nose-down orientation.
Fit 4 Bleed Screws 1 and 4 Bonded Seals 5 to seal bleed ports.
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* Refers to items included in 73200 Service Kit. For complete list see page 17.
Item numbers in bold refer to the General Assembly drawing and parts list (pages 21 – 22).
E N G L I S H
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