Dodge Ram Truck 1500-2500-3500. Manual — part 1349
ELEMENT - AIR CLEANER
REMOVAL
Filter Element Only
Housing removal is not necessary for element (filter)
replacement.
1. Loosen clamp and disconnect air duct at air
cleaner cover.
2. Pry over 4 spring clips (5) from housing cover (3)
(spring clips retain cover to housing).
3. Release housing cover (3) from locating tabs (4) on
housing and remove cover (3).
4. Remove air cleaner element (filter) from housing.
5. Clean inside of housing before replacing element.
Fig. 1 AIR CLEANER COVER
1 - CLAMP
2 - AIR DUCT
3 - AIR CLEANER COVER
4 - LOCATING TABS
5 - CLIPS (4)
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ENGINE - 5.7L - SERVICE INFORMATION
DR/DH
Housing Assembly
1. Loosen clamp and disconnect air duct at air
cleaner cover.
2. Lift entire housing (1) assembly from 4 locating
pins (2).
INSTALLATION
1. Install filter element into housing.
2. Position housing cover into housing locating tabs
(4).
3. Pry up 4 spring clips(5) and lock cover to housing.
4. Install air duct to air cleaner cover and tighten hose
clamp to 3 N·m (30 in. lbs.) torque.
5. If any other hose clamps were removed from air
intake system, tighten them to 3.4 N·m (30 in. lbs.)
torque.
6. If any bolts were removed from air resonator hous-
ing or air intake tubing, tighten them to 4.5 N·m (40
in. lbs.) torque.
Fig. 2 AIR CLEANER HOUSING
1 - AIR CLEANER HOUSING ASSEMBLY
2 - LOCATING PINS (4)
DR/DH
ENGINE - 5.7L - SERVICE INFORMATION
9 - 2319
7. Install filter housing (1) into locating pins (2).
CYLINDER HEAD
OPERATION—CYLINDER HEAD
The cylinder head closes the combustion chamber allowing the pistons to compress the air fuel mixture to the cor-
rect ratio for ignition. The valves located in the cylinder head open and close to either allow clean air into the com-
bustion chamber or to allow the exhaust gases out, depending on the stroke of the engine.
DIAGNOSIS AND TESTING—CYLINDER HEAD GASKET FAILURE
A cylinder head gasket leak can be located between adjacent cylinders or between a cylinder and the adjacent
water jacket.
•
Possible indications of the cylinder head gasket leaking between adjacent cylinders are:
− Loss of engine power
− Engine misfiring
− Poor fuel economy
•
Possible indications of the cylinder head gasket leaking between a cylinder and an adjacent water jacket are:
− Engine overheating
− Loss of coolant
− Excessive steam (white smoke) emitting from exhaust
− Coolant foaming
CYLINDER-TO-CYLINDER LEAKAGE TEST
To determine if an engine cylinder head gasket is leaking between adjacent cylinders, follow the procedures in Cyl-
inder Compression Pressure Test in this section. An engine cylinder head gasket leaking between adjacent cylinders
will result in approximately a 50–70% reduction in compression pressure.
CYLINDER-TO-WATER JACKET LEAKAGE TEST
WARNING: USE EXTREME CAUTION WHEN THE ENGINE IS OPERATING WITH COOLANT PRESSURE CAP
REMOVED.
VISUAL TEST METHOD
With the engine cool, remove the coolant pressure cap. Start the engine and allow it to warm up until thermostat
opens.
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ENGINE - 5.7L - SERVICE INFORMATION
DR/DH
If a large combustion/compression pressure leak exists, bubbles will be visible in the coolant.
COOLING SYSTEM TESTER METHOD
WARNING: WITH COOLING SYSTEM TESTER IN PLACE, PRESSURE WILL BUILD UP FAST. EXCESSIVE
PRESSURE BUILT UP, BY CONTINUOUS ENGINE OPERATION, MUST BE RELEASED TO A SAFE PRESSURE
POINT. NEVER PERMIT PRESSURE TO EXCEED 138 kPa (20 psi).
Install Cooling System Tester 7700 or equivalent to pressure cap neck. Start the engine and observe the tester’s
pressure gauge. If gauge pulsates with every power stroke of a cylinder a combustion pressure leak is evident.
CHEMICAL TEST METHOD
Combustion leaks into the cooling system can also be checked by using Bloc-Chek Kit C-3685-A or equivalent.
Perform test following the procedures supplied with the tool kit.
REMOVAL
DR/DH
ENGINE - 5.7L - SERVICE INFORMATION
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