DODGE RAM SRT-10 2006 Service Repair Manual

RINGS - PISTON
STANDARD PROCEDURE - PISTON RING FITTING
1. Determine the piston diameter and obtain the
appropriate ring set. The piston rings can be iden-
tified as shown.
2. Position each ring in the cylinder and use a piston
(1) to square it with the bore at a depth (3) of 89.0
mm (3.5 inch).
PISTON RING GAP CHART
TOP RING 0.26 - 0.36 mm (0.010 - 0.014 in.)
INTERMEDIATE RING 0.85-1.15 mm (0.033 - 0.045 in.)
OIL CONTROL RING 0.25-0.55 mm (0.010 - 0.022 in.)
3. Use a feeler gauge to measure the piston ring gap.
4. The top surface of all of the compression rings are
identified with the word TOP or the supplier’s
MARK. Assemble the rings with the word TOP or
the supplier’s MARK up.
5. Position the oil ring expander (2) in the oil control
ring (1) groove (bottom groove).
NOTE: There is no (TOP) mark on the oil ring.
6. Install the oil control ring (1) with the end gap
OPPOSITE the ends on the expander.

7. Install the intermediate piston ring in the second
groove.
8. Install the top piston ring in the top groove.
9. Position the rings as shown.
Install top and second compression rings on pis-
ton with ring gaps 180° apart.
Install oil control ring with ring gap 90° from top
and second ring.Do not position gaps over
wrist pin hole.

DAMPER - CRANKSHAFT
REMOVAL
1. Remove the accessory drive belt (Refer to 7 - COOLING/ACCESSORY DRIVE/DRIVE BELTS - REMOVAL).
2. Remove the four (4) damper to crankshaft bolts and remove damper and speed indicator ring.
INSPECTION
1. Inspect the damper hub for cracks and replace if
any are found.
2. Inspect the rubber member for deterioration or
missing segments.
3. Inspect the index lines (1) on the damper hub (2)
and the inertia member (3). If the lines are more
than 1.59 mm (1/16 in.) out of alignment, replace
the damper.
INSTALLATION
1. Install speed indicator ring.
NOTE: The speed indicator ring is located over a dowel pin.
2. Install the crankshaft damper and bolts. Tighten bolts to 40 Nꞏm (30 ft. lbs.) torque, plus an additional 60°.
NOTE: The damper must be installed so the hole is located over the dowel pin.
3. Install the accessory drive belt (Refer to 7 - COOLING/ACCESSORY DRIVE/DRIVE BELTS - INSTALLATION).

MOUNT - FRONT
REMOVAL
1. Disconnect the battery negative cables.
2. Remove the viscous fan/drive assembly (Refer to 7
- COOLING/ENGINE/RADIATOR FAN -
REMOVAL).
3. Raise vehicle on hoist.
4. Install engine support fixture tool# 8534 and steel
bracket tool # 8534A
5. Loosen the thru-bolt and nut.
6. Lift the engine SLIGHTLY and remove the insulator
to block bolts.
7. Remove the RH insulator (2) from the vehicle.
8. Remove the LH insulator (2) from the vehicle.

INSTALLATION
1. With engine raised SLIGHTLY, position the LH
insulator (2) to the mount. Install the bolts and
torque to specification.
2. With engine raised SLIGHTLY, position the RH
insulator (2) to the mount. Install the bolts and
torque to specification.
3. Lower the engine using tool # 8534, while guiding
the mount and thru-bolt into the frame mounted
support cushion brackets.
4. Install the thru bolt nut and tighten the nut to 95
Nꞏm (70 ft. lbs.) torque.
5. Remove the engine support fixture tool # 8534.
6. Lower the vehicle.
7. Install the viscous fan/drive assembly (Refer to 7 -
COOLING/ENGINE/RADIATOR FAN - INSTALLA-
TION).
8. Connect the battery negative cables.

MOUNT - REAR
REMOVAL
1. Raise the vehicle on a hoist.
2. Position a transmission jack in place.
3. Remove support cushion stud nuts.
4. Raise rear of transmission and engine SLIGHTLY.
5. Remove the bolts holding the support cushion to the transmission support bracket. Remove the support cushion.
6. If necessary, remove the bolts holding the transmission support bracket to the transmission.
INSTALLATION
1. If removed, position the transmission support bracket to the transmission. Install new attaching bolts and tighten
to 102 Nꞏm (75 ft. lbs.) torque.
2. Position support cushion to transmission support bracket. Install stud nuts and tighten to 47 Nꞏm (35 ft. lbs.)
torque.
3. Using the transmission jack, lower the transmission and support cushion onto the crossmember .
4. Install the support cushion bolts and tighten to 47 Nꞏm (35 ft. lbs.) torque.
5. Remove the transmission jack.
6. Lower the vehicle.

LUBRICATION
DESCRIPTION
A gear driven gerotor type oil pump is mounted behind the front gear cover inthe lower right portion on the engine.
OPERATION
A gerotor style oil pump draws oil from the crankcase through the suction tube and delivers it through the block
where it enters the oil cooler cover and pressure regulator valve. When oilpressure exceeds 517 kPa (75 PSI), the
valve opens exposing the dump port, which routes excess oil back to the oil pump.
At the same time, oil is directed to a cast in passage in the oil cooler cover,leading to the oil cooler element. As the
oil travels through the element plates, it is cooled by engine coolant traveling past the outside of the plates. It is
then routed to the oil filter head and through a full flow oil filter. If a plugged filter is encountered, the filter by-pass
valve opens, allowing unfiltered oil to lubricate the engine. This condition can be avoided by frequent oil and filter
changes, per the maintenance schedules found in the owners manual. The by-pass valve is calibrated to open when
it sees a pressure drop of more than 345 kPa (50 psi) across the oil filter.
The oil filter head then divides the oil between the engine and the turbocharger. The turbocharger receives filtered,
cooled and pressurized oil through a supply line from the filter head. The oil lubricates the turbocharger and returns
to the pan by way of a drain tube connecting the bottom of the turbocharger toa tube in the cylinder block.

CAUTION:
Two different styles of J-jet piston cooling nozzles and nozzle mounting fasteners are used, depending on
engine build date. The two designs are NOT interchangeable. One design uses an all metal piston cooling
nozzle (1) with a fluted mounting capscrew (3). The second design uses a plastic nozzle/body/locating arm
(5) , and a metal nozzle tip (4). The second design nozzle must be used with a banjo bolt (6). When replac-
ing piston cooling nozzles, it is important to replace the cooling nozzle mounting fastener with the same
type that was removed. Do not intermix both designs in the same engine. Severe engine damage can result
if the two designs are intermixed.

Oil is then carried across the block toan angle drilling which intersects the main oil rifle (3). The main oil rifle (3)
runs the length of the block and delivers oil to the crankshaft main journals and valve train. Oil travels to the crank-
shaft through a series of transfer drillings (one for each main bearing) and lubricates a groove in the main bearing
upper shell. From there another drilling feeds the camshaft main journals. J-jet piston cooling nozzles (1,4) are sup-
plied by a separate oil rifle. Plugs are used in place of saddle jets when J-jets are used. Crankshaft internal cross-
drillings supply oil to the connecting rod journals.

Another series of transfer drillings intersecting the main oil rifle supply (14) the valve train components. Oil travels
up the drilling, through a hole in thehead gasket, and through a drilling inthe cylinder head (one per cylinder),
where it enters the rocker arm pedestal (3) and is divided between the intake and exhaust rocker arm (1). Oil travels
up and around the rocker arm mounting bolt, and lubricates the rocker shaft(2) by cross drillings that intersect the
mounting bolt hole. Grooves at both ends of the rocker shaft supply oil through the rocker arm where the oil travels
to the push rod and socket balls.