Nitrogen Charging Screw Installation
Some shocks are non-rebuildable only because there is no provision for charging them with nitrogen. In many cases a Nitrogen Charging Bolt (SPNV 0512) can be fitted to solve the problem. This allows the shock to be charged with a Nitrogen Needle (TSNN 01).
WP shocks can be difficult to rebuild because of their charging method. ►Click here to read more.
We have been doing this service for years and have always required these jobs to be performed at Race Tech due to the complexities of the installation. This installation requires careful machining and, if done improperly, can ruin the shock.
Here are a few considerations:
- There must be a large enough surface area that can be flattened to allow the sealing washer to seal.
- The screw head must clear the eyelet, frame and mounting brackets through the entire travel of the shock. If anything disturbs the seal of the screw you can lose damping immediately.
- The spring and/or spring collars must be able to be installed.
- If this modification isn't done correctly the shock can be damaged beyond repair.
We suggest only highly qualified suspension technicians/machinists attempt this modification. These shocks come in many variations and must be approached with caution. Race Tech will not accept responsibility or liability for any damage that may occur due to improper installation. If at any time you have any questions, stop work immediately and contact our Tech Department 951.279.6655 x109.
The purpose of this text is to give a basic understanding of the procedure because many people have had failed attempts at doing this themselves.