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NOTE:
• Under no circumstances should oil changeintervals exceed 15,000 miles
(24,000 km) or six months or 500 Hours,
whichever comes first.
• Replace the engine oil and oil filter every 12,500 miles (20 000 km) when running
B20 fuel (Chassis Cab Only).
If Chassis Cab models and Pickup models
configured with optional B20 capability are
operated with greater than 5% levels of bio-
diesel, the oil change interval must not ex-
ceed 12,500 miles (20 000 km) under any
circumstances. See the Fuel Requirements
section for more information regarding opera-
tion of Chassis Cab models and Pickup mod-
els configured for use with biodiesel blend
(B6-B20) fuel meeting ASTM specification
D-7467.Perform Service Indicator —
Cummins Diesel
Your vehicle will require emissions mainte-
nance at a set interval. To help remind you
when this maintenance is due, the instru-
ment cluster will display “Perform Service”.
When the “Perform Service” message is dis-
played on the instrument cluster it is neces-
sary to have the emissions maintenance per-
formed. Emissions maintenance may include
replacing the Closed Crankcase Ventilation
(CCV) filter element. The procedure for clear-
ing and resetting the “Perform Service” indi-
cator message is located in the appropriate
Service Information.
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Maintenance Plan — Cummins Diesel Engine
Mileage or time passed (whichever comes first):7,500
15,000
22,500
30,000
37,500
45,000
52,500
60,000
67,500
75,000
82,500
90,000
97,500
105,000
112,500
120,000
127,500
135,000
142,500
150,000
Or Months: 6 12 18 24 30 36 42 48 54 60 66 72 78 84 90 96 102 108 114 120
Or Kilometers:
12,000
24,000
36,000
48,000
60,000
72,000
84,000
96,000
108,000
120,000
132,000
144,000
156,000
168,000
180,000
192,000
204,000
216,000
228,000
240,000
Change engine oil every 15,000 miles
(24 000 km) or six months or 500 Hours or
sooner if prompted by the oil change indica-
tor system, whichever comes first. ** XXXXXXXXXXXXXXXXX X XX
Additional Inspections
Check the Diesel Exhaust Fluid (DEF) tank,
refill if necessary. XXXXXXXXXXXXXXXXX X XX
Rotate the tires. X X X X X X X XXXXXXXXXX X XX
Lubricate front drive shaft fitting (4x4). X X X X X X X XXXXXXXXXX X XX
Inspect front end, and lubricate — If
equipped with serviceable fittings. XXXXXXXXXXXXXXXXX X XX
Inspect engine air filter, replace if necessary.
**** XX XX X X XX X X
Inspect the front suspension, tie rod ends and
boot seals for cracks or leaks and all parts for
damage, wear, improper looseness or end
play; replace if necessary. XX XX X X XX X X
Inspect the brake linings. XXX XX X
Inspect and adjust parking brake. XXX XX X
Inspect drive belt; replace as necessary. XXX XX X
SERVICING AND MAINTENANCE
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Mileage or time passed (whichever comes first):7,500
15,000
22,500
30,000
37,500
45,000
52,500
60,000
67,500
75,000
82,500
90,000
97,500
105,000
112,500
120,000
127,500
135,000
142,500
150,000
Or Months: 6 12 18 24 30 36 42 48 54 60 66 72 78 84 90 96 102 108 114 120
Or Kilometers:
12,000
24,000
36,000
48,000
60,000
72,000
84,000
96,000
108,000
120,000
132,000
144,000
156,000
168,000
180,000
192,000
204,000
216,000
228,000
240,000
Inspect wheel bearings. XX XX X
Additional Maintenance
Replace cabin air filter. XXX XX X
Replace engine fuel filter element. X X X X X X X X X X
Replace chassis mounted fuel filter element. X X X X X X X X X X
Inspect the front and rear axle surfaces. If
gear oil leakage is suspected, check the fluid
level. If using your vehicle for police, taxi,
fleet, off-road or frequent trailer towing
change the axle fluid. *
Inspect the transfer case fluid (4x4), change
for any of the following: police, taxi, fleet, or
frequent trailer towing. XX XX X
Change the transfer case fluid (4x4). XX
Change automatic transmission fluid
(AS69RC transmission only). XX XX X
Change the automatic transmission fluid and
sump filter (AS69RC transmission only). XX
Change automatic transmission fluid and fil-
ter(s) if using your vehicle for any of the fol-
lowing: police, fleet, or frequent trailer towing
(68RFE transmission only). XX
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Mileage or time passed (whichever comes first):7,500
15,000
22,500
30,000
37,500
45,000
52,500
60,000
67,500
75,000
82,500
90,000
97,500
105,000
112,500
120,000
127,500
135,000
142,500
150,000
Or Months: 6 12 18 24 30 36 42 48 54 60 66 72 78 84 90 96 102 108 114 120
Or Kilometers:
12,000
24,000
36,000
48,000
60,000
72,000
84,000
96,000
108,000
120,000
132,000
144,000
156,000
168,000
180,000
192,000
204,000
216,000
228,000
240,000
Change automatic transmission fluid and fil-
ter(s). X
Change the manual transmission fluid if using
your vehicle for any of the following: police,
fleet, or frequent trailer towing. XX
Replace Crankcase Ventilation Filter (CCV). X X
Flush and replace power steering fluid. X
Flush and replace engine coolant. *** X
Adjust valve lash clearance. X
Inspection and service should also be per-
formed anytime a malfunction is observed or
suspected. Retain all receipts.
* Inspect the front and rear axle surfaces
every 20,000 miles (32,000 km). If gear oil
leakage is suspected, check the fluid level.
If using your vehicle for police, taxi, fleet,
off-road or frequent trailer towing change
the axle fluid every 20,000 miles
(32,000 km).** Under no circumstances should oil
change intervals exceed 15,000 miles
(24 000 km) or six months or 500 Hours,
whichever comes first.
*** The manufacturer highly recommends
that all cooling system service, mainte-
nance, and repairs be performed by your
local authorized dealer.
**** Under no circumstances should the
air cleaner filter element exceed
30,000 miles (48,000 km) or 24 months,
whichever comes first.SERVICING AND MAINTENANCE
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ENGINE COMPARTMENT
6.4L Engine
1 — Coolant Pressure Bottle
2 — Transmission Dipstick
3 — Engine Oil Fill
4 — Engine Oil Dipstick
5 — Brake Fluid Reservoir
6 — Aux Power Distribution Center (Fuses)7 — Battery
8 — Power Distribution Center (Fuses)
9 — Washer Fluid Reservoir
10 — Power Steering Fluid Reservoir
11 — Air Cleaner Filter
SERVICING AND MAINTENANCE
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6.7L Diesel Engine — Six-Speed AS69RC HD (3500/Chassis Cab Models)
1 — Battery
2 — Engine Coolant Reservoir
3 — Engine Oil Fill
4 — Engine Oil Dipstick
5 — Automatic Transmission Dipstick
6 — Brake Fluid Reservoir7 — Aux Power Distribution Center
8 — Power Distribution Center
9 — Washer Fluid Reservoir
10 — Power Steering Fluid Reservoir
11 — Air Cleaner Filter
185
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6. Remove the used filter cartridge from thehousing and dispose of according to your
local regulations.
7. Wipe clean the sealing surfaces of the lid and housing.
8. Install new o-ring back into ring groove on the filter housing and lubricate with clean
engine oil.
9. Remove new filter cartridge from plastic bag and install into housing.
NOTE:
Do not remove cartridge from bag until
you reach this step in order to keep car-
tridge clean.
10. Push down on the cartridge to ensure it is properly seated. Do not pre-fill the filter
housing with fuel.
11. Install lid onto housing and tighten to 22.5 ft lbs (30.5 N.m). Do not over-
tighten the lid.
12. Prime the engine using the procedure in “Priming If The Engine Has Run Out Of
Fuel.” Then start the engine and confirm
there are no leaks.Underbody Mounted Fuel Filter
Replacement
NOTE:
• Using a fuel filter that does not meet themanufacturer's filtration and water separat-
ing requirements can severely impact fuel
system life and reliability.
• The underbody mounted filter housing will cause the engine not to run if:
1. No filter is installed.
CAUTION!
• Diesel fuel will damage blacktop paving surfaces. Drain the filter into an appro-
priate container.
• Do not prefill the fuel filter when install-
ing a new fuel filter. There is a possibility
debris could be introduced into the fuel
filter during this action. It is best to
install the filter dry and allow the in-tank
lift pump to prime the fuel system.
1. Ensure engine is turned off. 2. Place drain pan under the fuel filter drain
hose.
3. Open the water drain valve 1 full turn counterclockwise and completely drain
fuel and water into the approved
container.
4. Close the water drain valve.
5. Remove lid using a socket or strap wrench. Rotate counterclockwise for re-
moval. Remove used o-ring and discard it.
6. Remove the used filter cartridge from the housing and dispose of according to your
local regulations.
7. Wipe clean the sealing surfaces of the lid and housing.
8. Install new o-ring back into ring groove on the filter housing and lubricate with clean
engine oil.
NOTE:
WIF sensor is re-usable. Service kit comes
with new o-ring for filter canister and WIF
sensor.
189
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FLUID CAPACITIES — GAS ENGINE
U.S.Metric
Fuel (Approximate)
Standard Rear Tank 52 Gallons197 Liters
Optional Midship Tank 22 Gallons83 Liters
Engine Oil With Filter
6.4L Engine (We recommend you use SAE 0W-40, Synthetic API Certified) 7 Quarts6.6 Liters
Cooling System
6.4L Engine (We recommend you use Mopar Antifreeze/Coolant 10 Year/150,000 Mile Formula). 16.6 Quarts 15.7 Liters
FLUID CAPACITIES — 6.7L CUMMINS DIESEL ENGINE
U.S.Metric
Fuel (Approximate)
2500/3500 Standard Cab Longbed Models 28 Gallons106 Liters
2500/3500 Crew/Mega Cab Shortbed Models 31 Gallons129 Liters
2500/3500 Crew Cab Longbed Models 32 Gallons132 Liters
Standard Rear Tank – Chassis Cab Only 52 Gallons197 Liters
Optional Midship Tank – Chassis Cab Only 22 Gallons83 Liters
Diesel Exhaust Fluid Tank (Approximate) – 2500/3500 Models 5.5 Gallons21 Liters
Diesel Exhaust Fluid Tank (Approximate) – Chassis Cab 9 Gallons34 Liters
Engine Oil With Filter
6.7L Turbo Diesel Engine 12 Quarts11.4 Liters
213