Dodge Ram Truck 1500-2500-3500. Manual — part 1281

MOPAR

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GASKET MAKER

Mopar

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Gasket Maker is an anaerobic type gasket material. The material cures in the absence of air when

squeezed between two metallic surfaces. It will not cure if left in the uncovered tube. The anaerobic material is for
use between two machined surfaces. Do not use on flexible metal flanges.

MOPAR

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GASKET SEALANT

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Gasket Sealant is a slow drying, permanently soft sealer. This material is recommended for sealing

threaded fittings and gaskets against leakage of oil and coolant. Can be used on threaded and machined parts
under all temperatures. This material is used on engines with multi-layer steel (MLS) cylinder head gaskets. This
material also will prevent corrosion. Mopar

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Gasket Sealant is available in a 13 oz. aerosol can or 4oz./16 oz. can

w/applicator.

FORM-IN-PLACE GASKET AND SEALER APPLICATION

Assembling parts using a form-in-place gasket requires care but it’s easier than using precut gaskets.

Mopar

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Gasket Maker material should be applied sparingly 1 mm (0.040 in.) diameter or less of sealant to one

gasket surface. Be certain the material surrounds each mounting hole. Excess material can easily be wiped off.
Components should be torqued in place within 15 minutes. The use of a locating dowel is recommended during
assembly to prevent smearing material off the location.

Mopar

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Engine RTV GEN II or ATF RTV gasket material should be applied in a continuous bead approximately 3

mm (0.120 in.) in diameter. All mounting holes must be circled. For corner sealing, a 3.17 or 6.35 mm (1/8 or 1/4 in.)
drop is placed in the center of the gasket contact area. Uncured sealant may be removed with a shop towel. Com-
ponents should be torqued in place while the sealant is still wet to the touch (within 10 minutes). The usage of a
locating dowel is recommended during assembly to prevent smearing material off the location.

Mopar

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Gasket Sealant in an aerosol can should be applied using a thin, even coat sprayed completely over both

surfaces to be joined, and both sides of a gasket. Then proceed with assembly. Material in a can w/applicator can
be brushed on evenly over the sealing surfaces. Material in an aerosol can should be used on engines with multi-
layer steel gaskets.

STANDARD PROCEDURE - ENGINE GASKET SURFACE PREPARATION

To ensure engine gasket sealing, proper surface prep-
aration must be performed, especially with the use of
aluminum engine components and multi-layer steel
cylinder head gaskets.

Never use the following to clean gasket surfaces:

•

Metal scraper (3).

•

Abrasive pad (1) or paper to clean cylinder block
and head.

•

High speed power tool (1) with an abrasive pad
or a wire brush.

NOTE:

Multi-Layer

Steel

(MLS)

head

gaskets

require a scratch free sealing surface.

Only use the following for cleaning gasket surfaces:

•

Solvent

or

a

commercially

available

gasket

remover

•

Plastic or wood scraper.

•

Drill motor with 3M Roloc™ Bristle Disc (white or yellow).

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ENGINE - 3.7L - SERVICE INFORMATION

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CAUTION: Excessive pressure or high RPM (beyond the recommended speed), can damage the sealing sur-
faces. The mild (white, 120 grit) bristle disc is recommended. If necessary, the medium (yellow, 80 grit) bris-
tle disc may be used on cast iron surfaces with care.

REMOVAL

1. Disconnect the battery negative cable.

2. Remove air cleaner assembly.

3. Remove radiator core support bracket.

4. Remove fan shroud with viscous fan assembly.

5. Remove drive belt.

6. Remove A/C compressor (2) and secure away from

engine.

7. Remove generator (3) and secure away from

engine.

NOTE: Do NOT remove the phenolic pulley from
the P/S pump. It is not required for P/S pump
removal.

8. Remove power steering pump with lines attached

and secure away from engine.

9. Drain cooling system.

10. Disconnect the heater hoses from the engine.

11. Disconnect heater hoses from heater core and

remove hose assembly.

12. Disconnect throttle and speed control cables.

13. Remove upper radiator hose from engine.

14. Remove lower radiator hose from engine.

15. Remove radiator/cooling module assembly.

16. Disconnect the engine to body ground straps at

the left side of cowl.

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ENGINE - 3.7L - SERVICE INFORMATION

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17. Disconnect the engine wiring harness at the fol-

lowing points:

•

Intake air temperature (IAT) sensor (4)

•

Fuel Injectors

•

Throttle Position (TPS) Switch (2)

•

Idle Air Control (IAC) Motor (3)

•

Engine Oil Pressure Switch

•

Engine Coolant Temperature (ECT) Sensor

•

Manifold Absolute Pressure MAP) Sensor

•

Camshaft Position (CMP) Sensor

•

Coil Over Plugs

•

Crankshaft Position Sensor

18. Remove coil over plugs.

19. Release fuel rail pressure.

20. Remove fuel rail and secure away from engine.

NOTE: It is not necessary to release the quick
connect fitting from the fuel supply line for engine
removal.

21. Remove the PCV hose.

22. Remove the breather hoses.

23. Remove the vacuum hose for the power brake

booster.

24. Disconnect knock sensors.

25. Remove engine oil dipstick tube.

26. Remove intake manifold.

27. Install engine lifting fixture,special tool#8247, using original fasteners from the removed intake manifold, and

fuel rail. Torque to factory specifications.

NOTE: Recheck bolt torque for engine lift plate before removing engine.

28. Secure the left and right engine wiring harnesses away from engine.

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ENGINE - 3.7L - SERVICE INFORMATION

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29. Raise vehicle.

30. Disconnect oxygen sensor wiring.

31. Disconnect crankshaft postion sensor.

32. Disconnect the engine block heater power cable, if equipped.

33. Disconnect the front propshaft at the front differ-

ential and secure out of way.

NOTE: It is necessary to disconnect the front
propshaft for access to the starter and left side
exhaust flange.

34. Remove the starter (4).

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ENGINE - 3.7L - SERVICE INFORMATION

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