spark plugs replace RAM CHASSIS CAB 2007 Owners Manual

MAINTAINING YOUR VEHICLECONTENTS
Engine Compartment — 6.7L Diesel Engine ....392

Engine Compartment— 5.7L Gas Engine ......393

Onboard Diagnostic System (OBD II) .........394
▫ Loose Fuel Filler Cap Message ............394

Replacement Parts ......................395

Engine Data Plate ......................395

Dealer Service .........................395

Service Information .....................396

Maintenance Procedures ..................398 ▫ Engine Oil ..........................398
▫ Drive Belts (Gas Engines) ...............406
▫ Drive Belt (Diesel Engines) ..............406
▫ Engine Air Cleaner Filter (Gas Engines) .....406
▫ Engine Air Cleaner Filter (Diesel Engines) ....407
▫ Draining Fuel/Water Separator Filter (Diesel
Engines) ............................410
▫ Engine Fuel Filter (Gas Engines) ...........413
▫ Spark Plugs (Gas Engines) ...............413
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mixture in excess of 5% can negatively impact the on-
engine fuel filter’s ability to separate water from the fuel,
resulting in high pressure fuel system corrosion or dam-
age.
NOTE: As sufficient testing as not been completed,
ethanol blends are not recommended or approved for use
with your Cummins Diesel equipped vehicle.
NOTE: In addition, commercially available fuel addi-
tives are not necessary for the proper operation of your
Cummins Diesel equipped vehicle.
Engine Fuel Filter (Gas Engines)
A plugged fuel filter can cause stalling, limit the speed at
which a vehicle can be driven or cause hard starting.
Should an excessive amount of dirt accumulate in the
fuel tank, frequent filter replacement may be necessary. Spark Plugs (Gas Engines)
Spark plugs must fire properly to assure engine perfor-
mance and emission control. New plugs should be in-
stalled at the specified mileage. The entire set should be
replaced if there is any malfunction due to a faulty spark
plug, malfunctioning spark plugs can damage the cata-
lytic converter. For proper type of replacement spark
plugs, refer to the “Vehicle Emission Control Informa-
tion” label in the engine compartment.
Catalytic Converter (Gas Engines)
The catalytic converter requires the use of unleaded fuel
only. Leaded gasoline will destroy the effectiveness of the
catalyst as an emission control device.
Under normal operating conditions, the catalytic con-
verter will not require maintenance. However, it is im-
portant to keep the engine properly tuned to assure
proper catalyst operation and prevent possible catalyst
damage. MAINTAINING YOUR VEHICLE 413
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Miles 18,000 21,000 24,000 27,000 30,000
(Kilometers) (30 000) (35 000) (40 000) (45 000) (50 000)
Change engine oil and engine oil filter at interval
shown or 3 months, whichever comes first. X X XXX
Lubricate Front Drive Shaft Fitting (4X4). X X X X X
Rotate tires. X X X
Check spare tire for proper pressure and correct
stowage. XXX
Lubricate outer tie rod ends. X X X
Change front and rear axle fluid (4X4). X
Check transfer case fluid level (4X4). X
Inspect brake linings. X
Inspect engine air cleaner filter, replace if neces-
sary. X
Replace spark plugs. X
Inspect PCV valve, replace as necessary. X SCHEDULE “B” 489
8 M
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Miles 48,000 51,000 54,000 57,000 60,000
(Kilometers) (80 000) (85 000) (90 000) (95 000) (100 000)
Inspect engine air cleaner filter, replace if neces-
sary. X
Replace spark plugs. X
Inspect PCV valve, replace as necessary. X492 SCHEDULE “B”
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Miles 78,000 81,000 84,000 87,000 90,000
(Kilometers) (130 000) (135 000) (140 000) (145 000) (150 000)
Change engine oil and engine oil filter at interval
shown or 3 months, whichever comes first. X X XXX
Lubricate Front Drive Shaft Fitting (4X4). X X X X X
Rotate tires. X X X
Check spare tire for proper pressure and correct
stowage. XXX
Lubricate outer tie rod ends. X X X
Change front and rear axle fluid (4X4). X
Check transfer case fluid level (4X4). X
Inspect brake linings. X
Inspect engine air cleaner filter, replace if neces-
sary. X
Replace spark plugs. X
Inspect PCV valve, replace as necessary. X
Inspect auto tension drive belt and replace if re-
quired.* X494 SCHEDULE “B”
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Miles 105,000 108,000 111,000 114,000 117,000 120,000
(Kilometers) (175 000) (180 000) (185 000) (190 000) (195 000) (200 000)
Inspect engine air cleaner filter, replace if
necessary. XX
Replace spark plugs. X
Inspect PCV valve, replace as necessary. X
Inspect auto tension drive belt and replace if
required.* XX
Flush and replace engine coolant if not done
at 102,000 miles (170 000 km). X
*This maintenance is not required if the belt was previ-
ously replaced.
** This applies only if the vehicle is used for frequent
trailer towing, snowplowing, fleet vehicle or commercial
service. Inspection and service should also be performed anytime
a malfunction is observed or suspected. Retain all re-
ceipts. SCHEDULE “B” 497
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Schedule “A”
Miles 6,000 12,000 18,000 24,000 30,000
(Kilometers) (10 000) (20 000) (30 000) (40 000) (50 000)
[Months] [6] [12] [18] [24] [30]
Change engine oil and engine oil filter. X X X X X
Rotate tires. X X X X X
Check spare tire for proper pressure and correct
stowage. X X XXX
Check transfer case fluid level (4X4). X
Lubricate Front Drive Shaft Fitting ( 4X4). X X X X X
Lubricate outer tie rod ends. X X X X X
Inspect brake linings. X
Inspect engine air cleaner filter, replace if neces-
sary. X
Replace spark plugs. X498 SCHEDULE “A”
8 M
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Miles 36,000 42,000 48,000 54,000 60,000 66,000
(Kilometers) (60 000) (70 000) (80 000) (90 000) (100 00) (110 000)
[Months] [36] [42] [48] [54] [60] [66]
Change engine oil and engine oil filter. X X X X X X
Rotate tires. X X X X X X
Check spare tire for proper pressure and cor-
rect stowage. X X XXXX
Check transfer case fluid level (4X4). X
Lubricate Front Drive Shaft Fitting (4X4). X X X X X X
Lubricate outer tie rod ends. X X X X X X
Flush and replace engine coolant at 60
months, if not replaced at 102,000 miles (170
000 km). X
Inspect brake linings. X X
Inspect engine air cleaner filter, replace if
necessary. X
Replace spark plugs. X
Inspect PCV valve, replace as necessary. X SCHEDULE “A” 499
8 M
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Miles 72,000 78,000 84,000 90,000 96,000
(Kilometers) (120 000) (130 000) (140 000) (150 000) (160 000)
[Months] [72] [78] [84] [90] [96]
Change engine oil and engine oil filter. X X X X X
Rotate tires. X X X X X
Check spare tire for proper pressure and correct
stowage. X X XXX
Lubricate outer tie rod ends. X X X X X
Check transfer case fluid level (4X4). X
Lubricate Front Drive Shaft Fitting (4X4). X X X X X
Inspect brake linings. X X
Inspect engine air cleaner filter, replace if neces-
sary. X
Replace spark plugs. X
Inspect PCV valve, replace as necessary. X
Inspect auto tension drive belt and replace if re-
quired. X500 SCHEDULE “A”
8 M
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Miles 102,000 108,000 114,000 120,000
(Kilometers) (170 000) (180 000) (190 000) (200 000)
[Months] [102] [108] [114] [120]
Change engine oil and engine oil filter. XXXX
Rotate tires. XXXX
Check spare tire for proper pressure and correct stowage. XXXX
Drain and refill transfer case fluid (4X4). X
Lubricate Front Drive Shaft Fitting (4X4). XXXX
Flush and replace engine coolant, if not replaced at 60 months. X
Flush and replace engine coolant if not replaced at 102,000 miles
(170 000 km/h). X
Lubricate outer tie rod ends. XXXX
Inspect brake linings. X
Inspect auto tension drive belt and replace if required.* X X
Inspect engine air cleaner filter, replace if necessary. X
Replace spark plugs. X
Inspect PCV Valve, replace as necessary. X SCHEDULE “A” 501
8 M
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