Changing Transmission/Axle Oil-18-Speed Powershift Transmission

IMPORTANT: Prevent premature axle failure. Carefully follow drain and fill procedure.

NOTE: When transmission shift characteristics change after transmission oil change, recalibrate the transmission. See your John Deere Dealer.

2. Remove plug (A) from bottom of transmission.

3. Remove plug (D) and clean sump screen.

4. Reinstall sump screen and plug.

5. Remove three drain plugs (B) and (C) and drain both front and rear axles.

6. Drain PTO drop box, if equipped.

7. Install all drain plugs.

A-Transmission Drain Plug
B-Axle Drain Plug
C-Axle Drain Plugs
D-Sump Screen Plug

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IMPORTANT: Fill transmission using HY-GARD
JDM J20C Oil ONLY.

8. Remove axle plug (E) and (F) for filling purposes.

9. Fill transmission with oil at fill tube (A). Oil level should be between marks (C) on sight glass.

10. Put transmission in PARK position and operate engine at 900 rpm, to pump oil to axles. Stop engine when oil is at mark (D).

11. Add oil again until oil level reaches marks (C).

12. Operate engine at 900 rpm until oil flows from open ports (E) and (F).

13. Stop engine and install plugs.

14. Again fill transmission to the upper full mark (C).

15. Operate engine at 2100 rpm, with transmission in PARK for five minutes.

16. Stop engine and allow oil level to stabilize in the sight gauge for 5 minutes.

17. Recheck oil level and fill at fill tube (A) as necessary.

18. With the engine off, recheck oil level and fill at fill tube (A) as necessary. Oil should be between full marks (C) when oil change is complete.

A-Transmission Fill Tube
B-Transmission Sump Screen
C-Full Oil Level Mark
D-Low Oil Level Mark
E-Front Axle DR Plug
F-Rear Axle DR Plug

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