JCB Dieselmax engine parts: pistons, turbos, gaskets

Categories

07/10/2026 27

JCB JS200–JS260 Monitor Messages: What They Mean and What to Check

On JCB JS200, JS210, JS220, JS240 and JS260 tracked excavators with the AMS control system, the monitor in the cab shows the working mode, the time, gauges for oil temperature, coolant temperature and fuel level, and warnings in the message line. Each message first of all points to a real problem: low fuel or coolant, a blocked filter, overheating. But if a message stays on after the cause has been put right, the sensor, wiring or controller is at fault. Below is what each message means and what to check, based on Section C of JCB service manual 9803/6400.

07/10/2026 34

JCB JS200–JS260 Track Tension: How to Check the Sag and Adjust the Tracks

Track tension on the JCB JS200, JS210, JS220, JS240 and JS260 tracked excavators should be checked every shift. With the track raised off the ground, the gap between the underside of the track frame and the top of the track shoe at the fourth bottom roller from the front should be 275–295 mm on hard ground and 320–340 mm on soft sand and sticky clay. Tension is adjusted with grease through the valve on the track adjuster cylinder. The procedure below follows Section 3 of JCB service manual 9803/6400.

07/10/2026 23

JCB 3CX and 4CX Dipper Ram Creep: Causes, Ram Creep Tests and Repair

If the dipper of a JCB 3CX or 4CX backhoe loader drops on its own under load, there are three possible causes: a leaking piston seal in the ram, spool leakage in the excavator valve section, or a leaking auxiliary relief valve (ARV) in that section. The JCB service manual gives a test procedure that identifies the culprit before the ram is removed and stripped. Below are the test sequence, the permitted creep and the repair rules from Section E of service manual 9803/3290.

07/10/2026 29

JCB 3CX and 4CX Hydraulic Oil: HP32 or HP46, System Capacity and Changing the Oil

For the hydraulic system of JCB 3CX and 4CX backhoe loaders, the JCB service manual recommends ISO VG32 oil — JCB Hydraulic Fluid HP32 — at air temperatures below +38 °C. The more viscous ISO VG46, JCB High Performance Hydraulic Oil, is for air temperatures above +38 °C only. Machines with Advanced EasyControl joysticks need a separate all-season HV class oil, JCB Multigrade Anti Shear. The hydraulic system holds approximately 130 litres. The oil is changed every 2000 hours and the filter at every 500-hour service.

07/10/2026 33

JCB 3CX and 4CX Antifreeze: Which Coolant to Use, How Much and How to Change It

On JCB 3CX and 4CX backhoe loaders with the JCB Dieselmax engine, the coolant is renewed every two years, at the 2000-hour service. The cooling system holds 18.5 litres. The JCB service manual calls for an ethylene glycol antifreeze to ASTM D6210 with corrosion inhibitors and rules out organic acid technology (OAT) products. The standard mix is 50%, which gives protection down to −40 °C. Below we cover choosing, checking and changing the antifreeze as described in Section 3 of JCB service manual 9803/3290.

Default Name Model

320/03249

Main bearing shell 320/03249 JCB Dieselmax, aftermarket

In stock

0.00 ₺

02/634781

Main bearing shells, standard 02/634781 JCB, aftermarket

In stock

0.00 ₺

320/03240

Main bearing upper shell 320/03240 JCB Dieselmax, genuine

In stock

0.00 ₺

3911940

Oil cooler 3911940 Cummins 6BT, aftermarket

In stock

0.00 ₺

320/04482

Oil cooler assembly 320/04482 JCB Dieselmax, aftermarket

In stock

0.00 ₺

332/G1855

Oil pump 332/G1855 JCB Dieselmax, aftermarket

In stock

0.00 ₺

320/04212

Oil-to-coolant heat exchanger assembly 320/04212, aftermarket

In stock

0.00 ₺

320/09239

Piston assembly 320/09239 JCB Dieselmax +1.00 mm, genuine

In stock

0.00 ₺

320/09361

Piston assembly 320/09361 JCB Dieselmax DC standard, genuine

In stock

0.00 ₺

320/09421

Piston assembly 320/09421 JCB Dieselmax DE standard, aftermarket

In stock

0.00 ₺

320/09421

Piston assembly 320/09421 JCB Dieselmax DE standard, genuine

In stock

0.00 ₺

320/B4435

Piston cooling jet 320/B4435 JCB Dieselmax, genuine

In stock

0.00 ₺

320/09106

Piston ring set 320/09106 JCB Dieselmax 4.8 standard, aftermarket

In stock

0.00 ₺

320/03227

Piston with pin 320/03227 JCB Dieselmax standard, genuine

In stock

0.00 ₺

320/04042

Plug 320/04042 JCB Dieselmax, aftermarket

In stock

0.00 ₺

320/04080

Plug ZL M12x1.5 320/04080 JCB Dieselmax, aftermarket

In stock

0.00 ₺

320/04080

Plug ZL M12x1.5 320/04080 JCB Dieselmax, genuine

In stock

0.00 ₺

320/08626

Pulley bearing 320/08626 JCB Dieselmax, aftermarket

In stock

0.00 ₺

160/01980

Radiator cap 160/01980 JCB, aftermarket

In stock

0.00 ₺

30/926736

Radiator cap 30/926736 JCB, genuine

In stock

0.00 ₺

320/03075

Rear crankshaft seal carrier 320/03075 JCB Dieselmax SE, aftermarket

In stock

0.00 ₺

320/07634

New

Rocker cover (SB) 320/07634 JCB Dieselmax, aftermarket

In stock

0.00 ₺

02/203151

Rocker cover 02/203151 Perkins, aftermarket

In stock

0.00 ₺

320/07640

Rocker cover bolt 320/07640 JCB Dieselmax, aftermarket

In stock

0.00 ₺

Showing 361 to 384 of 415 (18 Pages)

JCB Dieselmax engine parts (page 16)