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INSTRUCTIONS FOR ADJUSTING THE PRESSURE IN A GAS STRUT

SAFETY REQUIREMENTS

STOP Failure to do so could invalidate your warranty
Please read carefully before installing

Gas Springs should always be treated with respect in the knowledge of the pressure internally. Under
no circumstances should they be opened or tampered with, or subject to excessive heat or tension.
As the nature of a gas spring is to lose its force over a long period of time, it is advisable to periodically
check its ability to operate as initially intended, preferably forming part of a planned maintenance
programme. Replace if, and when necessary.
INSTALLATION INSTRUCTIONS
For standard compression gas springs, we advise the use of ball joints to alleviate possible side
F load. Always ensure end fittings are fully screwed onto the gas spring thread ends before fitting.
Generally fit with piston rod down, preferably within 60 degrees of the vertical, and avoid the
spring travelling through a large arc. It is advisable to keep the spring in a single plane of
movement. Failure to adhere to this advice may result in reduced life of the gas spring.
F16 Valve Adjustment Instruction
GRUB SCREW (Z)

GAS STRUTS - ADJUSTING THE PRESSURE

When correctly fitted the grub screw will be seen at the top of the cylinder. Fitting the cylinder this way
allows the oil in the cylinder to lubricate the shaft seal.
ADJUSTMENT OF THE GRUB SCREW
Ensure the 2mm allen key (provided) is located in the grub screw (Z) to its maximum depth.
Undo the screw carefully by rotating anti-clockwise until gas is heard escaping. When re-tightening care
should be taken to ensure that excessive force is not applied, as this will damage the hexagon in the grub
screw and make it inoperative.
Repeat the process releasing a small amount of gas at a time until the required spring action
is acquired. It is advisable to add approximately 10% to the weight being supported when
adjusting the gas spring. This will reduce the chance of releasing too much gas.
UNDER NO CIRCUMSTANCES SHOULD THE GRUB SCREW BE REMOVED.
Please note that a slight mist of oil may sometimes be seen escaping when venting gas . This is normal.
Further explanation and advice can be Or, to view a video tutorial
obtained from: on fitting gas struts,
scan this QR code:
Co-Mac (P.N.) Ltd
0800 33 55 22
www.comac.co.nz
105 Kaimanawa Street, PO Box 4,
Palmerston North, New Zealand 4440
For Hard to Find Hardware

© Co-Mac (P.N.) Ltd 2017

F16 Aim for life in your years - not just years in your life.

PH +64 (0) 6 350 0015+64 (0) 6 350 0015 PH 0800 33 55 220800 33 55 22 105 Kaimanawa Street
148
FAX +64 (0) 6 354 2662+64 (0) 6 354 2662 FAX 0800 42 66 220800 42 66 22 PO Box 4
Orders - orders@comac.co.nz orders@comac.co.nz (Prices subject to change without Palmerston North 4440
notifi cation. All prices + GST.) 2017 NEW ZEALAND