JCB 3DX Hydraulic Cylinder Seal Kit — When to RFQ
Applies to: JCB 3DX / 3CX loader & backhoe cylinders
Quick answer
JCB 3DX Hydraulic Cylinder Seal Kit — When to RFQ on JCB 3DX / 3CX loader & backhoe cylinders: typical warning signs include Oil weep at rod gland under pressure; Cylinder drift with load held. Common causes include Worn rod / piston seals past service life; Scored chrome rod cutting new seals. These notes identify parts to quote — they are not a certified repair procedure.
- Independent OEM-compatible supplier — not affiliated with JCB Ltd.
- Workshops typically RFQ: cylinder seal kit.
- Workshops typically RFQ: rod wiper.
- Workshops typically RFQ: O-ring kit.
- Workshops typically RFQ: hydraulic filter.
Warning signs
- Oil weep at rod gland under pressure
- Cylinder drift with load held
- External spray at full stroke
- Scored rod or dirty oil after hose burst
Common causes
- Worn rod / piston seals past service life
- Scored chrome rod cutting new seals
- Wrong kit for cylinder series
- Contaminated oil after filter bypass
Parts to quote
Typical line items workshops search next to this fault. Matched catalogue links go to a verified SKU when found; otherwise open search so you can RFQ by keyword. We confirm fitment before quoting.
FAQ
Seal kit only or full cylinder?▼
If the rod is not scored and the barrel is clean, a kit is usually enough. Send cylinder photos, rod diameter, and any OEM stamp on the gland. We confirm kit fitment before quoting.
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Confirm fitment & get a quote
Send machine model, hours, and part photos. We reply with availability, MOQ, and lead time in writing — no invented stock claims.