User Manual - Page 404

For 1500 DT 2021 .

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402 SERVICING AND MAINTENANCE
Replace engine air cleaner. X X X X X
Flush and replace the engine coolant at 10 years or
150,000 miles (240,000 km) whichever comes first.
X X
Replace accessory drive belt(s). X
Inspect the transfer case fluid, change for any of the
following: police, taxi, fleet, or frequent trailer towing.
X X
Change transfer case fluid. X
1. Under normal conditions the diesel fuel filter should be replaced every 20,000 miles (32,000 km) (every other oil change). If the vehicle is being used in severe operating conditions,
or In certain geographical areas of the country (Pennsylvania, New York, Ohio, Maryland, West Virginia, Arkansas, Oklahoma, Kansas, Iowa, Missouri and Nebraska) due to fuel
cleanliness issues, it’s recommended to replace the fuel filter every 10,000 miles (16,000 km).
Mileage or time passed (whichever comes first)
10,000
20,000
30,000
40,000
50,000
60,000
70,000
80,000
90,000
100,000
110,000
120,000
130,000
140,000
150,000
Or Years: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
Or Kilometers:
16,000
32,000
48,000
64,000
80,000
96,000
112,000
128,000
144,000
160,000
176,000
192,000
208,000
224,000
240,000
21_DT_OM_EN_USC_t.book Page 402
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