123/08053
  • Brand
    JF Parts
  • Article
    123/08053
  • Machine system
    Hydraulic system
  • Part type
    Hydraulic tank sight glass
  • Machine brand
    JCB
  • Manufacturing type
    Aftermarket
  • All the features
In stock
0,00 ₺
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Hydraulic tank sight glass 123/08053 is an aftermarket part for the JCB machines.

A screw-in sight glass fits a threaded hole in the hydraulic tank wall and shows the oil level without opening the tank. The reflective pattern behind the glass and the red dot in the centre are easy to see when the oil is level with the glass. The metal body is threaded and sealed to the tank with a washer. A cloudy or cracked glass gives false readings and leaks. The aftermarket sight glass is chosen by part number, and its thread is compared with the old part. The glass also shows the colour of the oil: dark, foamy or milky oil means the oil is due for a change or water is getting into the system. Choose the glass by part number.

Specifications


Part number123/08053
Production typeAftermarket
Part typeHydraulic tank sight glass
System / groupHydraulic system
Machine makeJCB

Compatibility

Other parts are in Hydraulic tanks.

Fitting

Clean the threads and apply a suitable thread sealant if required.

Specifications

  • Machine system
    Hydraulic system
  • Part type
    Hydraulic tank sight glass
  • Machine brand
    JCB
  • Manufacturing type
    Aftermarket
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Useful articles 07/10/2026 40
JCB 3CX / 4CX Hydraulic Pressure: Settings, Pressure Testing and Causes of Low Pressure
On JCB 3CX and 4CX backhoe loaders with a gear pump, the working pressure of the hydraulic system is limited by the main relief valve in the loader valve: 236–241 bar on machines up to serial number 964124 and 248–252 bar on machines from serial number 964125 (standard and high-pressure hydraulics). It is checked with a 0–400 bar pressure gauge connected to the loader valve test point, with the engine at 1500 rev/min and the oil warmed to 50 °C. Below are the settings, the test procedure and the reasons why pressure drops, taken from the JCB service manual (Section E).
JCB 3CX / 4CX 07/10/2026 18
JCB 3CX / 4CX Hydraulics: Circuit Diagrams, Pumps and Relief Valve Pressures
Section E of the JCB service manual (publication 9803/3290-14) deals with the hydraulic system of the JCB 3C, 3CX and 4CX backhoe loaders. It brings together technical data for the pumps and valve blocks, hydraulic circuits for machines of different build years, valve operation, fault finding tables, and the procedures for pressure testing and for overhauling the pump, valves and rams. The section PDF runs to 302 pages.
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