Allmand — Cylinder Disassembly
Repair & overhaul · Hydraulic cylinder
From a Allmand operator's manual — check it applies to your exact model before use.
Before you start
- Seal is usually damaged when cylinder is disassembled.
Procedure
- Hold cylinder tube (13) stationary and pull wire ring (14) out through slot; rotate head (6) to ease disassembly.
- Pull shaft (1), with all assembled parts, out of cylinder tube.
- Remove lock nut (12) from end of shaft and slide piston (9) and cylinder head (6) off shaft.
- Remove piston wear ring (11), piston seal (10), and o-ring (8) from outside grooves on piston.
- Remove wiper seal (2), rod seal (3) and wear ring (7) from inside of cylinder head.
- Remove o-ring (5) with backup washer (4) from groove on outside of head.
- Clean all parts in suitable cleaning solvent; blow dirt and excess solvent out with air pressure.
- Examine all parts for wear or damage and replace if necessary.
Tools required
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
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.