Allmand — Replacing Damaged Backup Rings
Repair & overhaul · Relief cartridge backup ring
From a Allmand operator's manual — check it applies to your exact model before use.
Before you start
- Make only one diagonal cut in backup ring. Do not cut backup ring into two pieces.
Procedure
- Do not replace backup rings offered in seal kits unless original ring has been damaged.
- If backup ring must be replaced, cut replacement backup ring diagonally.
- Make only one diagonal cut; do not cut backup ring into two pieces.
- Slip backup ring over cartridge and into place.
Source: Allmand operator's manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.