Allmand — Change O-ring of Unloader
Repair & overhaul · Unloader O-rings
From a Allmand service manual — check it applies to your exact model before use.
Before you start
- Do not wear gloves for this job.
- The resin ring is likely to be deformed if pulled with force.
Procedure
- Coat O-ring 4 with grease and install in the O-ring groove of the piston.
- Coat the resin ring with grease and install it on O-ring 4.
- Slightly coat inner circumference of correction tool with grease, insert into piston and correct resin ring.
- Pull out the correction tool and confirm the resin ring is properly installed.
Tools required
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Source: Allmand service 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.