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John Deere – 1023E, 1025R and 1026R – Clean and Inspect Fuel Injection Nozzle

[1] – Remove anticorrosive grease from new or reconditioned nozzles by washing them thoroughly in diesel fuel.

[2] –
Never use a steel brush to clean nozzles. Use of a steel brush distorts the
spray hole.
To clean nozzles properly, JDF13 Nozzle Cleaning Kit is recommended. The
Cleaning Kit is available through the John Deere SERVICEGARD? Catalog.

Remove carbon from used nozzles, and clean by washing in diesel fuel. If parts are coated with hardened carbon or lacquer, it may be necessary to use a brass wire brush (supplied in Nozzle Cleaning Kit).

[3] – After removing carbon or lacquer from the exterior of nozzle, inspect sealing surfaces between separator plate and nozzle body for nicks or scratches.

[4] – Inspect condition of separator plate and nozzle body. Contact area of separator plate (both parts) must not be scored or pitted. Use an inspection magnifier (No. 16487 or equivalent) to aid in making the inspection.

[5] – Inspect the piston (large) part of nozzle valve to see that it is not scratched or scored and that lower (tip) end of valve is not broken. If any of these conditions are present, replace the nozzle assembly.

[6] – Further inspect the nozzle assembly by performing a slide test. Use the following procedure:

a. Dip the nozzle valve in clean diesel fuel. Insert valve in nozzle body.
b. Hold nozzle vertical, and pull valve out about 1/3 of its engaged length.
c. Release valve. Valve should slide down to its seat by its own weight.
d. Replace nozzle assembly if the valve does not slide freely to its seat.

[7] – Test injector nozzles after assembly is complete. (See Test Fuel Injection Nozzle in Section 230, Group 15.)