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With disc brakes the fluid level can be expected to fall as
the brake linings wear. However, an unexpected drop in
fluid level may be caused by a leak and a system check
should be conducted.
Refer to Fluids, Lubricants and Genuine Parts for the
correct Fluid type.
WARNING!
Use of a brake fluid that may have a lower initial
boiling point, or unidentified as to specification,
may result in sudden brake failure during hard
prolonged braking. You could have an accident.
WARNING!
Overfilling the brake fluid reservoir can result in
spilling brake fluid on hot engine parts and the
brake fluid catching fire.
Use only brake fluid that has been in a tightly closed
container to avoid contamination from foreign matter or
moisture.
CAUTION!
Do not allow a petroleum-base fluid to contaminate
the brake fluid. Seal damage and loss of brake
performance may result.
404 MAINTAINING YOUR VEHICLE
Page 406 of 493

Drain And Refill
Vehicles operated in normal service do not have regularly
scheduled oil changes. If fluid has become contaminated
with water or subjected to severe service, follow the
recommended change intervals in Maintenance Schedule
“B” in Section 8 of this manual.
Lubricant Selection
Refer to Fluids, Lubricants and Genuine Parts for the
correct lubricant type.
NOTE:The presence of water in the gear lubricant will
result in corrosion and possible failure of differential
components. Operation of the vehicle in water, as may be
encountered in some off-highway types of service, will
require draining and refilling the axle to avoid damage.
Limited-Slip Differentialsin vehicles equipped with
10.5”/11.5” AxlesDO NOT REQUIREany limited slip
oil additive (friction modifiers).
Transfer Case — If Equipped
Fluid Level Check
This fluid level can be checked by removing the filler
plug. The fluid level should be to the bottom edge of the
filler plug hole with the vehicle in a level position.
Lubricant Selection
Refer to Fluids, Lubricants and Genuine Parts for the
correct lubricant type.
Manual Transmission — If Equipped
Fluid Level Check
This fluid level can be checked by removing the filler
plug. If the level of the lubricant is more than 1/4” below
the bottom of the filler hole while the vehicle is on level
ground, enough lubricant should be added to bring the
level to the bottom of the filler hole.
406 MAINTAINING YOUR VEHICLE
Page 443 of 493

•Off-road or desert operation.
•Extensive operation at high engine speeds (greater
than 2900 rpm) and loads (greater than 70% throttle).
NOTE:Most vehicles are operated under the conditions
listed for ScheduleB.
NOTE:IfANYof these apply to you then change your
coolant every 101,250 miles (162 000 km) or 60 months,
whichever comes first and follow schedule “B” of the
Maintenance Schedulessection of this manual.
Second is Schedule“A”. It is for vehicles that are not
operated under any of the conditions listed under Sched-
uleB.
Use the schedule that best describes your driving condi-
tions. Where time and mileage are listed, follow the
interval that occurs first.
CAUTION!
Failure to perform the required maintenance items
may result in damage to the vehicle.
At Each Stop for Fuel
•Check the engine oil level about 15 minutes after a
fully warmed engine is shut off. Checking the oil level
while the vehicle is on level ground will improve the
accuracy of the oil level reading. Add oil only when
the level is at or below the ADD or MIN mark.
•Check the windshield washer solvent and add if
required. When refilling the washer fluid reservoir,
take some washer fluid and apply it to a cloth or towel
and wipe clean the wiper blades, this will help blade
performance.
•Drain water from the fuel filter.
MAINTENANCE SCHEDULES 443
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Once a Month
•Check tire pressure and look for unusual wear or
damage.
•Inspect the batteries and clean and tighten the termi-
nals as required.
•Check the fluid levels of coolant reservoir, brake
master cylinder, and transmission and transfer case (if
equipped), add as needed.
•Check Filter Minder™. Replace air cleaner filter
element if necessary.
•Check all lights and all other electrical items for correct
operation.At Each Oil Change
•Change the engine oil filter.
•Inspect the exhaust system.
•Inspect the brake hoses.
•Inspect the U-Joints ( if equipped) and front suspen-
sion components.
•Check the automatic transmission fluid level.
•Check the manual transmission fluid level.
•Check the coolant level, hoses, and clamps.
•Lubricate outer tie rod ends 2500/3500 (4X4) models
only.
•Lubricate Front Drive Shaft Fitting (2500/3500, 4X4).
444 MAINTENANCE SCHEDULES
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Miles 3,750 7,500 11,250 15,000 18,750
(Kilometers) (6 000) (12 000) (18 000) (24 000) (30 000)
Change engine oil and engine oil filter. X X
Lubricate Front Drive Shaft Fitting (2500/3500,
4X4).X X XXX
Rotate tires. X X
Check spare tire for proper pressure and correct
stowage.XX
Lubricate outer tie rod ends 2500/3500 (4X4) mod-
els only.XX
Inspect water pump weep hole for blockage. X
Replace fuel filter element. Clean the water in fuel
sensor.X
Change rear axle fluid.X
Change front axle fluid (4X4). X
Inspect brake linings.X
Inspect and adjust parking brake if necessary. X
446 SCHEDULE “B”
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Miles 22,500 26,250 30,000 33,750 37,500
(Kilometers) (36 000) (42 000) (48 000) (54 000) (60 000)
Change engine oil and engine oil filter. X X X
Lubricate Front Drive Shaft Fitting (2500/3500,
4X4).X X XXX
Rotate tires. X X X
Check spare tire for proper pressure and correct
stowage.XXX
Lubricate outer tie rod ends 2500/3500 (4X4) mod-
els only.XXX
Inspect drive belt, replace as required. X
Inspect fan hub. X
Inspect damper. X
Inspect water pump weep hole for blockage. X
Replace fuel filter element. Clean the water in fuel
sensor.X
SCHEDULE “B” 447
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Miles 41,250 45,000 48,750 52,500 56,250
(Kilometers) (66 000) (72 000) (78 000) (84 000) (90 000)
Change engine oil and engine oil filter. X X
Lubricate Front Drive Shaft Fitting (2500/3500,
4X4).X X XXX
Rotate tires. X X
Check spare tire for proper pressure and correct
stowage.XX
Lubricate outer tie rod ends 2500/3500 (4X4) mod-
els only.XX
Inspect drive belt, replace as required. X
Inspect water pump weep hole for blockage. X
Replace fuel filter element. Clean the water in fuel
sensor.X
Inspect brake linings. X
Inspect and adjust parking brake if necessary. X
Change rear axle fluid. X
Change front axle fluid (4X4). X
SCHEDULE “B” 449
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Page 450 of 493
Miles 60,000 63,750 67,500 71,250 75,000
(Kilometers) (96 000) (102 000) (108 000) (114 000) (120 000)
Change engine oil and engine oil filter. X X X
Lubricate Front Drive Shaft Fitting (2500/3500,
4X4).X X XXX
Flush and replace engine coolant at 60 months, if
not replaced at 102,000 miles (163 000 km).X
Rotate tires. X X X
Check spare tire for proper pressure and correct
stowage.XXX
Lubricate outer tie rod ends 2500/3500 (4X4) mod-
els only.XXX
Inspect drive belt, replace as required. X
Inspect fan hub. X
Inspect damper. X
Inspect water pump weep hole for blockage. X X
Replace fuel filter element. Clean the water in fuel
sensor.XX
450 SCHEDULE “B”
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