Kobelco SK330-8 Valve Assembly,Main Relief — Exploded View & Part Numbers

Kobelco SK330-8 · Valve Assembly,Main Relief · 7 part numbers

Illustration reproduced from the Kobelco SK330-8 parts catalogue for part identification only. Callout numbers on the drawing match the Ref. column in the table below. Kobelco is a trademark of its respective owner; Shenyue Machinery is an independent supplier of excavator parts.

Kobelco SK330-8

Valve Assembly,Main Relief

The Valve Assembly,Main Relief group on the Kobelco SK330-8 contains 7 separately orderable part numbers. The Ref. column mirrors the callout numbers on the illustration, so a part can be ordered straight from the drawing. The list comes straight from the Kobelco SK330-8 catalogue for this machine family.

• 7 part numbers in this group, all listed below
• Kobelco SK330-8 excavator parts — every number confirmed against your machine serial
• Callout numbers on the drawing match the Ref. column
• Genuine via original supply channels, or quality OEM alternative — declared on every quote
• 3,000+ part types on the shelf · 100,000+ part numbers available to order

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Structurally, these 7 numbers fall into 3 Kobelco number series — YN22V, LC22V, ZD12P among the largest. In practice that means repeated items such as ring, valve, main and 1 hardware positions.

The high-quantity positions are: YN22V00001S121 (ring, ×1 per assembly); YN22V00001S122 (spacer, ×1 per assembly); ZD12P02500 (o-ring, ×1 per assembly). The full list follows below.

Rebuild-at-component-level is the practical route for most Kobelco SK330-8 hydraulic assemblies. Wear shows up at predictable points — spool clearances, valve plates, bearing sets, seal packages — and those items are listed individually, so you can quote only what is worn instead of exchanging the complete unit.

Seal kits for this group are quoted from the same table — the O-ring and seal positions carry their own numbers, so a hydraulic repair never forces a purchase at assembly level.