JCB 1253, 1202, 1553, 1554 Liftall Service Repair Manual
Description:
JCB 1253, 1202, 1553, 1554 Liftall Service Repair Manual
- This valve mainly consists of a valve body, diaphragm assembly, unloader plunger assembly, non-return valve assembly, tyre inflating assembly, pressure setting spring, top cover and base cover.
- The diaphragm assembly comprises of a spring loaded valve secured on to a governor plunger by a spring washer and nut with bottom follower, diaphragm and top follower.
- The spring loaded valve seats against a seat in the valve body. The unloader plunger assembly consists of a plunger fitted with 0-ring on one end and a valve seat and valve secured by nyloc nut on the other end.
- The valve of unloader plunger is spring loaded with a shim and secured in the bottom of valve body by base cover, sealing ring and circlip, while the plunger is located in the bore of valve body beneath the governor plunger.
- Due to the spring load, the unloader plunger is pushed up and the valve seals the passage on valve seat. The non return valve assembly comprises of a spring loader hemi-spherical rubber valve which seats on the valve body in the delivery passage and secured in position by a valve stop and spring retainer.
- A pressure setting spring is located in between the top follower of diaphragm assembly and top cover. The top cover is secured to the body by 4 screws with spring washers. A spring guide is located in between the pressure setting spring and the top cover while a adjusting screw is screwed in to the top cover with a lock nut.
- In between locknut and top cover, on exhaust flap and a cup is provided to prevent dust and direct entry. A tyre inflating plunger assembly is housed on the delivery passage of valve body before the non return valve assembly and consists of a spring loaded valve, inflating plunger with 0-ring and secured on to the body by an adaptor with an aluminium washer.
- A dust cap is also provided on the adaptor to prevent dust and dirt entry into the tyre inflating passage when not in use.
Table of Contents:
JCB 1253, 1202, 1553, 1554 Liftall Service Repair Manual
Section 1 – General Information
Section 2 – Care and Safety
Section 3 – Routine Maintenance
Section B – Body and Framework
Section C – Electrics
Section D – Controls
Section E – Hydraulics
Section F – Transmission
Section G – Brakes
Section K – Engine
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Please Note:
⦁ This is the SAME manual used by the dealers to troubleshoot any faults in your vehicle. This can be yours in 2 minutes after the payment is made.
⦁ Contact us at [email protected] should you have any queries before your purchase or that you need any other service / repair / parts operators manual.
Wilson Abraham –