Dodge Ram Truck 1500-2500-3500. Manual — part 1368

1. Install the right (8) and left (4) side engine mounts to the front axle. Torque nuts to 94 N·m (70 ft. lbs.).

2. Raise the front axle into the frame and install the left and right side through bolts. Torque nuts to 94 N·m (70 ft.

lbs.).

3. Insert the two upper through bolts into the right and left side engine mounts and loose assemble the two nuts

onto the through bolts.

4. Lower the engine using engine support fixture special tool # 8534, until the left and right side engine brackets

rest on the through bolts, and the lower engine bracket through holes align with the engine mounts, and the left
engine bracket holes align with the front axle slots.

5. Loose assemble the 3 bolts that attach the front axle to the left engine bracket.

6. Loose assemble the lower through bolts.

7. Torque the nuts for the 4 through bolts to 101 N·m (75 ft. lbs.).

8. Torque the 3 bolts that attach the front axle to the left engine bracket to 101 N·m (75 ft. lbs.).

9. Install the engine oil filter, if removed.

10. Install the front crossmember (Refer to 13 - FRAME & BUMPERS/FRAME/FRONT CROSSMEMBER - INSTAL-

LATION).

11. Install the skid plate.

12. Lower the vehicle.

13. Reconnect the negative battery cable.

MOUNT - REAR

REMOVAL

1. Raise the vehicle on a hoist.

2. Using a suitable jack, support transmission.

3. Remove the nuts from the transmission mount.

4. Remove the two bolts that attach the transmission

mount to the engine bracket.

5. Raise the transmission enough to remove the

mount from the crossmember.

6. Remove the mount.

9 - 2394

ENGINE - 5.7L - SERVICE INFORMATION

DR/DH

INSTALLATION

NOTE: Threadlocking compound must be applied to the bolts before installation.

1. Install the two bolts that attach the transmission mount to the transmission bracket.

2. Torque the bolts to 61N·m (45 ft.lbs.) torque.

3. Lower the transmission so the transmission mount rests on the crossmember, and the studs of the transmission

mount are aligned in the slots in the crossmember.

4. Install the nuts onto the transmission mount studs through the crossmember access slot.

5. Torque the nuts to 54N·m (40 ft. lbs.).

LUBRICATION

DIAGNOSIS AND TESTING

DIAGNOSIS AND TESTING - CHECKING ENGINE OIL PRESSURE

1. Remove oil pressure sending unit and install gauge assembly C-3292.

2. Run engine until thermostat opens.

3. Oil Pressure:

•

Curb Idle–25 kPa (4 psi) minimum

•

3000 rpm–170 - 758 kPa (25 - 110 psi)

4. If oil pressure is 0 at idle, shut off engine. Check for a clogged oil pick-up screen or a pressure relief valve stuck

open.

DIAGNOSIS AND TESTING - ENGINE OIL LEAK

Begin with a thorough visual inspection of the engine, particularly at the area of the suspected leak. If an oil leak
source is not readily identifiable, the following steps should be followed:

1. Do not clean or degrease the engine at this time because some solvents may cause rubber to swell, temporarily

stopping the leak.

2. Add an oil soluble dye (use as recommended by manufacturer). Start the engine and let idle for approximately 15

minutes. Check the oil dipstick to make sure the dye is thoroughly mixed as indicated with a bright yellow color
under a black light.

3. Using a black light, inspect the entire engine for fluorescent dye, particularly at the suspected area of oil leak. If

the oil leak is found and identified, repair per service manual instructions.

4. If dye is not observed, drive the vehicle at various speeds for approximately 24 km (15 miles), and repeat inspec-

tion.If the oil leak source is not positively identified at this time, proceed with the air leak detection test
method.

Air Leak Detection Test Method

1. Remove the PCV valve from the IAFM. Cap or plug the PCV valve grommet.

2. Attach an air hose with pressure gauge and regulator to the dipstick tube.

CAUTION: Do not subject the engine assembly to more than 20.6 kPa (3 PSI) of test pressure.

3. Gradually apply air pressure from 1 psi to 2.5 psi maximum while applying soapy water at the suspected source.

Adjust the regulator to the suitable test pressure that provide the best bubbles which will pinpoint the leak
source. If the oil leak is detected and identified, repair per service manual procedures.

4. If the leakage occurs at the rear oil seal area, refer to the section, Inspection for Rear Seal Area Leak.

5. If no leaks are detected, turn off the air supply and remove the air hose and all plugs and caps. Install the PCV

valve.

6. Clean the oil off the suspect oil leak area using a suitable solvent. Drive the vehicle at various speeds approx-

imately 24 km (15 miles). Inspect the engine for signs of an oil leak by using a black light.

DR/DH

ENGINE - 5.7L - SERVICE INFORMATION

9 - 2395

INSPECTION FOR REAR SEAL AREA LEAKS

Since it is sometimes difficult to determine the source of an oil leak in the rear seal area of the engine, a more
involved inspection is necessary. The following steps should be followed to help pinpoint the source of the leak.

If the leakage occurs at the crankshaft rear oil seal area:

1. Disconnect the battery.

2. Raise the vehicle.

3. Remove torque converter or clutch housing cover and inspect rear of block for evidence of oil. Use a black light

to check for the oil leak:

a. Circular spray pattern generally indicates seal leakage or crankshaft damage.

b. Where leakage tends to run straight down, possible causes are a porous block, distributor seal, camshaft

bore cup plugs oil galley pipe plugs, oil filter runoff, and main bearing cap to cylinder block mating surfaces.

4. If no leaks are detected, pressurize the crankcase as outlined in the, Inspection (Engine oil Leaks in general)

CAUTION: Do not exceed 20.6 kPa (3 psi).

5. If the leak is not detected, very slowly turn the crankshaft and watch for leakage. If a leak is detected between

the crankshaft and seal while slowly turning the crankshaft, it is possible the crankshaft seal surface is damaged.
The seal area on the crankshaft could have minor nicks or scratches that can be polished out with emery cloth.

CAUTION: Use extreme caution when crankshaft polishing is necessary to remove minor nicks and
scratches. The crankshaft seal flange is especially machined to complement the function of the rear oil seal.

6. For bubbles that remain steady with shaft rotation, no further inspection can be done until disassembled.

OIL

STANDARD PROCEDURE - ENGINE OIL SERVICE

The engine oil level indicator is located at the left hand of the engine on the 5.7L engines.

CRANKCASE OIL LEVEL INSPECTION

CAUTION: Do not overfill crankcase with engine oil, pressure loss or oil foaming can result.

Inspect engine oil level approximately every 800 kilometers (500 miles). Unless the engine has exhibited loss of oil
pressure, run the engine for about ten minutes before checking oil level. Checking engine oil level on a cold engine
is not accurate.

To ensure proper lubrication of an engine, the engine oil must be maintained at an acceptable level. The acceptable
levels are indicated between the ADD and SAFE marks on the engine oil dipstick.

1. Position vehicle on level surface.

2. With engine OFF, allow approximately five minutes for oil to settle to bottom of crankcase, remove engine oil

dipstick.

3. Wipe dipstick clean.

4. Install dipstick and verify it is seated in the tube.

5. Remove dipstick, with handle held above the tip, take oil level reading.

6. Add oil only if level is below the ADD mark on dipstick.

ENGINE OIL CHANGE

Change engine oil at mileage and time intervals described in Maintenance Schedules (Refer to LUBRICATION &
MAINTENANCE/MAINTENANCE SCHEDULES - DESCRIPTION).

Run engine until achieving normal operating temperature.

1. Position the vehicle on a level surface and turn engine off.

2. Hoist and support vehicle on safety stands.

9 - 2396

ENGINE - 5.7L - SERVICE INFORMATION

DR/DH

3. Remove oil fill cap.

4. Place a suitable drain pan under crankcase drain.

5. Remove drain plug from crankcase and allow oil to drain into pan. Inspect drain plug threads for stretching or

other damage. Replace drain plug if damaged.

6. Install drain plug in crankcase. Torque to 34 N·m ( 25 ft. lbs.).

7. Lower vehicle and fill crankcase with specified type and amount of engine oil described in this section.

8. Install oil fill cap.

9. Start engine and inspect for leaks.

10. Stop engine and inspect oil level.

USED ENGINE OIL DISPOSAL

Care should be exercised when disposing used engine oil after it has been drained from a vehicle engine. Refer to
the WARNING at beginning of this section.

FILTER - ENGINE OIL

REMOVAL

All engines are equipped with a high quality full-flow,
disposable type oil filter. DaimlerChrysler Corporation
recommends a Mopar

T

or equivalent oil filter be used.

1. Position a drain pan under the oil filter.

2. Using a suitable oil filter wrench loosen filter (3).

3. Rotate the oil filter counterclockwise to remove it

from the cylinder block oil filter boss.

4. When filter separates from cylinder block oil filter

boss, tip gasket end upward to minimize oil spill.
Remove filter from vehicle.

NOTE: Make sure filter gasket was removed with
filter.

5. With a wiping cloth, clean the gasket sealing surface of oil and grime.

INSTALLATION

1. Lightly lubricate oil filter gasket (2) with engine oil.

2. Thread filter (3) onto adapter nipple. When gasket

makes contact with sealing surface, hand tighten
filter one half turn, or 180°,do not over tighten.

3. Add oil, verify crankcase oil level and start engine.

Inspect for oil leaks.

DR/DH

ENGINE - 5.7L - SERVICE INFORMATION

9 - 2397