avdel AV 50 73435-02000 Manual De Instrucciones página 40

Servicing the Tool

Using a 55mm spanner screw the *Piston Extraction Rod into the *Piston Extractor until it contacts and presses
the Piston 1 into the Body 2. Continue to screw the *Piston Extraction Rod clockwise until only 10mm of the
Piston Extraction Rod is protruding from the front face of the Piston Extractor. The Piston will now be inserted
into the main bore of the Body 2. Refer to the illustration below.
Piston Extractor
Piston Extraction

Manually push the end of the Piston 1 fully into the Body 2 until it stops against the rear of the bore. Remove
the *Piston Extractor, *Piston Extraction Rod and *Piston Seal Sleeve from the Piston and Body.
 Fill the front of the Body 2 with Enerpac
into the Body.

Insert the Valve Rod 16 into the Piston 2, with the end with the machined flats first.
 Slide O-Ring 23 over the Seal Gland 17 and into the external groove. Insert the Anti-Extrusion Ring 27 in the
same groove, in front of the installed O-Ring. Refer to the General Assembly and Parts List for the correct
orientation of the O-Ring and Anti-Extrusion Ring.

Press the Front Bearing Ring 24 into the internal recess within the Seal Gland 17 and then install Rod Seal 25
behind the Front Bearing Ring. Install the Wiper Seal 22 in the front recess of the Seal Gland. Refer to the
General Assembly to ensure the correct orientation of the Rod Seal and Wiper Seal.

Lubricate the surface and leading edge of the Body 2 bore into which the Seal Gland 17 is to be installed with
Molykote ® 111 grease.
 Connect the spare *Quick Coupler - Female to the Quick Coupler - Male 10 on the Hydraulic Hose – Pull 19.
This will allow air to be released from the pull side Piston 1 when inserting the Seal Gland 17.

Insert the Seal Gland 17 over the Piston 1 and push into the Front of the Body 2 until the internal threads in
the front of the Body are exposed. Take care not to damage the O-Ring 23 and Anti-Extrusion Ring 27 on the
Body threads.

Lubricate both the internal thread in the Body 2 and the external thread on Nose Cap 15 with MolyLithium
Grease.

Insert the Nose Cap 15 into the front of the Body 2. Screw the Nose Cap 15 fully into the Body using a large
adjustable spanner or clamp. In doing so, this will install the Seal Gland 17 into the correct position within the
Body. A small amount of oil will be expelled from the Hydraulic Hose – Pull 19.

Remove spare *Quick Coupler - Female from the Quick Coupler - Male 10 on the Hydraulic Hose – Pull 19.
All numbers in bold refer to the General Assembly and Parts List on pages 16, 17 and 18.
* Service Kit on page 10
14
Rod
® HF hydraulic oil. Oil level should be just above the front inlet bore
Piston Extraction
Sleeve