813/M2979
  • Brand
    OKKS
  • Article
    813/M2979
  • Machine system
    Transmission
  • Part type
    Gasket
  • Machine brand
    JCB
  • Manufacturing type
    Aftermarket
  • All the features
In stock
0,00 ₺
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Solenoid block gasket 813/M2979 is an aftermarket part for the JCB machines. This is the gasket of the transmission solenoid valve block.

A transmission gasket seals the joint between the case and its covers, the solenoid valve block or the pump body. The solenoid block gasket also separates the block's passages: when it fails, oil crosses from one circuit to another, gears engage late or wrongly and oil leaks around the block. Under heat and pressure the gasket hardens and compresses over time.

Specifications


Part number813/M2979
Production typeAftermarket
Part typeGasket
System / groupTransmission
Machine makeJCB

Compatibility

According to the product card, 813/M2979 is a gasket. Fit is confirmed by the part number. The catalogue also has the genuine version of this part. Other parts are in Transmission.

Fitting

Before assembly, clean old gasket material off the faces, taking care that no dirt enters the passages. Lay the gasket on the dry face the right way round and tighten the bolts in a cross pattern to the specified torque. Check the joint for leaks after the first run.

Specifications

  • Machine system
    Transmission
  • Part type
    Gasket
  • Machine brand
    JCB
  • Manufacturing type
    Aftermarket
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JCB 3CX / 4CX 07/10/2026 28
JCB 3CX / 4CX Transmission: Gearboxes, Axles, Pressures and Stall Test
Section F of the JCB service manual covers the transmission of the JCB 3C, 3CX and 4CX backhoe loaders: Synchro Shuttle SS700, Powershift PS764 and PS766 gearboxes, torque converter, front and rear axles, propshafts and oil cooler. It contains technical data, gearbox operation and electrics, pressure tests, the torque converter stall test, fault finding tables and removal procedures. This is issue 9803/3290-16 of the manual; the PDF runs to 306 pages.
Useful articles 02/10/2026 55
Which gearbox and axles are fitted to your JCB 3CX/4CX
Gearbox and axle parts are matched to a specific unit. Here is which transmissions and axles are fitted to JCB 3CX and 4CX backhoe loaders and how to tell them apart. The data comes from the JCB service manual for 3C, 3CX and 4CX backhoe loaders (machines with serial numbers 960001–989999, 1327000–1349999 and 1616000–1625999).
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