Allmand — Spool Seal Installation
Repair & overhaul · Control valve spool
From a Allmand operator's manual — check it applies to your exact model before use.
Before you start
- Do not pull spool too far, as this will allow seal in front groove to enter a spool groove.
- Be careful not to over torque spool screw and twist it off.
Procedure
- Lightly oil and insert one new spool seal in handle end (front) seal groove of valve housing.
- Verify seal fit; seal should have a perfect ridge with no kinks or twists.
- Lightly oil valve spool and reintroduce from positioner end (rear) into valve housing.
- Slowly push spool past seal with twisting motion; stop when seal groove is exposed on positioner end.
- Lightly oil and insert remaining spool seal in bonnet end seal groove; verify fit.
- Return spool to center position with a twisting motion.
- Reattach spool positioner using Loctite 242 (blue) on spool screw.
- Slide bonnet in place; replace bonnet screws and torque to 5-7 ft. lbs.
Tools required
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Spool positioner screw: 7 ft. lb. maximum torque
- Bonnet screws: 5-7 ft. lbs.
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.