John Deere 9400 Combine Maintenance Guide identifies service schedule parts, maintenance intervals & common John Deere parts for this model.

Service Schedule Parts

1 - Clean or replace after 50 hours and as required. AH115833 Every Clean or replace every 200 hours and as required.
1 - Recirculation Air Filter AH115836 Every Replace every 400 hours.
3 - Hydraulic/Hydrostatic Filter Element AH128449 Every Change annually and clean or change as required.
1 - Primary Air Filter MSN - 655289-AR70106 Every Change only with primary filter.
1 - Secondary Air Filter MSN 655289-AR70107 Every Change annually and clean or change as required.
1 - Primary Air Filter MSN -655288AR80652 Every Change only with primary filter.
1 - Secondary Air Filter MSN -655288AR80653 Every Replace every 500 hours and as required.
1 - Engine Fuel Filter Engine 6359T MSN -640100AR86745 Every Replace every 500 hours and as required.
1 - Fuel Water Separator Filter AT81478 Every Replace every 250 hours or once a season, whichever occurs first.
1 - Engine Oil Filter Engine 6068H MSN 640101-RE59754 Every Replace every 500 hours and as required.
1 - Engine Fuel Filter Engine 6068H MSN 640101-RE62419 Every Replace every 250 hours or once a season, whichever occurs first.
1 - Engine Oil Filter Engine 6359T MSN -640100T19044 Every

Commonly Used Parts

Cool-Gard II Plus-50 II
Torq-Gard 10W or Low Viscosity Hy-Gard TY26573
GL-5 TY26794