Gas Lift Struts and Coil Spring Compressors

Gas struts hold things up; compressors hold springs down

Gas struts, also called gas springs or lift supports, hold hoods, tailgates and hatches open. Ratings matter: force in newtons or pounds, extended length, stroke and end fittings must all match, and a vehicle-specific strut lists the make, model and years. As a rough guide, 294 N is about 66 lb and 422 N about 95 lb of force per strut. Replace pairs together, since a weak strut stresses its partner.

Coil spring compressors: capacity, hooks and respect for the spring

A strut spring compressor lets you remove a coil spring from a strut assembly. Capacity is rated in pounds, for example 2,646 lb, and must exceed the spring's compressed load; the hooks or claws should grip several coils firmly. A compressed spring holds a great deal of energy, so keep your body out of its line, compress evenly in small steps, and never use a damaged tool. A pre-assembled loaded strut avoids the risk.

Questions about Gas Lift Struts and Coil Spring Compressors

How do I choose the force rating of a gas strut?

The rating must balance the weight of the hood or lid. Use the original strut's force and length as the guide, since too weak a strut lets the lid sag and too strong a one strains hinges and mounts. Replace both struts at the same time.

Why does my hood no longer stay up?

Gas struts lose pressure as seals wear, and a corroded rod can leak, so the hood slowly sinks. Replace both with units of the same force rating, length and end fittings. Support the hood safely until then.

Is a coil spring compressor dangerous?

It can be. A compressed spring can release violently if a hook slips. Use a rated compressor with the hooks seated on several coils, keep clear of the spring's line, follow the vehicle's procedure, and consider a pre-assembled strut if you are unsure.