Kobelco SK240-12 · Cylinder Mounting (Arm Cylinder) · 40 part numbers
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The Cylinder Mounting (Arm Cylinder) is listed without an exploded view in the SK240-12 catalogue — the parts table below is the authoritative reference, and every part number is confirmed against your machine serial before we quote.
The Kobelco SK240-12 Cylinder Mounting (Arm Cylinder) breaks down into 40 individually orderable part numbers. Callout numbers on the exploded view map one-to-one to the Ref. column in the table. All numbers are taken from the machine's own parts catalogue — nothing here is generic.
| Ref. | Part No. | Description | Qty / Assy |
|---|---|---|---|
| YN02B10150F1 | CYLINDER INSTAL | ||
| 1 | YN02B10151F1 | CYLINDER INSTAL | 1 |
| 2 | YN01V00244F1 | CYLINDER, ARM | 1 |
| 1 | YN02B11116P1 | PIN | 1 |
| 2 | HS18C20165G2 | CAPSCREW | 1 |
| 3 | ZN18C20016 | NUT | 2 |
| 4 | B16T0442D53 | SHIM (0.5) | 1 |
| 5 | B16T0442D40 | SHIM (0.9) | 1 |
| 6 | B16T0442D14 | SHIM (1.6) | 1 |
| 7 | YN02B01414D1 | SHIM (2.0) | 2 |
| 3 | YN01V00244S003 | CYLINDER HEAD | 1 |
| 4 | 2438U1104S4 | BUSHING | 1 |
| 5 | 2438U1324S5 | RING, SNAP | 1 |
| 6 | LC01V00044S006 | RING, BUFFER | 1 |
| 7 | LC01V00044S007 | RING | 1 |
| 8 | LQ01V00007S008 | RING, BACK UP | 1 |
| 9 | 2438U1172S37 | RING, WIPER | 1 |
| 10 | ZD12G13500 | O RING - | 1 |
| 11 | 2438U1753S16 | RING, BACK UP | 1 |
| 12 | ZS23C18080 | CAPSCREW | 12 |
| 13 | YN01V00244S013 | RING | 1 |
| 14 | YN01V00244S014 | SEAL | 1 |
| 15 | LC01V00044S015 | PISTON | 1 |
| 16 | 2438U999S16 | RING, SEAL | 1 |
| 17 | LQ01V00003S017 | RING, BACK UP | 2 |
| 18 | LC01V00044S018 | RING | 2 |
| 19 | 2438U999S18 | RING | 2 |
| 20 | 2438U953S21 | SETSCREW | 1 |
| 21 | 2436R624S6 | BALL | 1 |
| 22 | YN01V00120S023 | RING | 1 |
| 23 | LC01V00005S025 | SEAL | 1 |
| 24 | 2438U1137S26 | STOPPER | 2 |
| 25 | 2438U1137S27 | SNAP RING | 1 |
| 26 | YN01V00244S026 | BUSHING | 2 |
| 27 | 2438U1381S24 | RING, WIPER | 4 |
| LC01V00098R100 | REPAIR KIT | 1 | |
| YN01V00244R200 | SEAL KIT, CYL PISTON | 1 | |
| YN01V00244R300 | SEAL KIT, CYL | 1 | |
| YN01V00244R400 | TUBE KIT, CYL | 1 | |
| YN01V00244R500 | ROD KIT, CYL | 1 |
Part numbers as fitted to the Kobelco SK240-12 excavator. Where a position changed during the production run, the serial number settles which one applies to your machine.
The 40 entries group into 11 distinct number series, led by YN01V, 2438U. Expect repeated items such as ring, seal, kit and 4 hardware positions when you work through it.
The high-quantity positions are: ZS23C18080 (capscrew, ×12 per assembly); 2438U1381S24 (ring, wiper, ×4 per assembly); ZN18C20016 (nut, ×2 per assembly). The full list follows below.
Send us the Kobelco SK240-12 serial number together with the part number or the symptom you are chasing. We confirm fitment from the serial range before quoting, and mixed orders are consolidated into a single shipment — a set of seals does not travel in its own parcel.
Hydraulic components are the heart of the Kobelco SK240-12: main pump delivery, swing and travel drive, control valve sections and the lines and seals that connect them. When a circuit loses power, drifts under load, or runs noisy when warm, the fault is usually traced to one of the components in this group rather than to the machine as a whole.
Yes. Seal items are listed as individual part numbers in the table, so a seal package for one joint can be quoted without buying the whole assembly. If that matches your case, quote ZS23C18080 and we will take it from there.
Either. The complete Cylinder Mounting (Arm Cylinder) can be quoted as a set, or any single part number from the table — both are normal requests from our trade customers.
In most cases yes. The wear points on Kobelco SK240-12 hydraulic assemblies are individually replaceable and all carry their own part numbers in the table above, so a targeted repair can be quoted without exchanging the complete unit.
Fuel Tank Mounting (Fuel Pump Mounting, Dust Cover, Remote Drain)
View Parts ListHydraulic Oil Tank Mounting (Right Camera Bracket)
View Parts ListPto Assembly (Hydraulic Pto)
View Parts ListSwing Motor Mounting
View Parts ListFilter List
View Parts ListUndercarriage Parts List
View Parts ListNut Part Numbers
View Parts ListBushing Part Numbers
View Parts ListKobelco SK240-12 workshop guide
Read the guideKobelco SK240-12 workshop guide
Read the guideKobelco SK240-12 workshop guide
Read the guideRepair guides written from our own workshop notes on the Kobelco SK240-12 — the same components listed on this page, with the failure patterns and part numbers we see most often from trade customers.