torque DODGE RAM SRT-10 2006 Service Owner's Guide

34. Install the A/C compressor (2).
35. Install the drive belt.
36. Install the fan shroud with the viscous fan assem-
bly.
37. Install the radiator core support bracket.
38. Install the air cleaner assembly.
39. Refill the engine cooling system.
40. Recharge the air conditioning.
41. Check and fill engine oil.
42. Connect the battery negative cable.
43. Start the engine and check for leaks.
SPECIFICATIONS
SPECIFICATIONS - 3.7L ENGINE
GENERAL SPECIFICATIONS
DESCRIPTION SPECIFICATION
Type 90°SOHCV612Valve
Number of Cylinders 6
Firing Order 1-6-5-4-3-2
Lead Cylinder No. 1 Left Bank
Compression Ratio 9.6:1
Max. Variation Between Cylinders 25%
Metric Standard
Displacement 3.7 Liters 226 Cubic Inches
Bore 93.0 mm 3.66 in.
Stroke 90.8 mm 3.40 in.
Horsepower 211 @ 5200 RPM
Torque 236ft. lbs.@4000 PRM
Compression Pressure 1172-1551 kPa 170-225 psi
CYLINDER BLOCK
DESCRIPTION SPECIFICATION
Metric Standard
Bore Diameter 93.013 ± .0075 mm 3.6619 ± 0.0003 in.
Out of Round (MAX) 0.076 mm 0.003 in.
Taper (MAX) 0.051 mm 0.002 in.
PISTONS

CYLINDER HEAD
DESCRIPTION SPECIFICATION
Metric Standard
Gasket Thickness (Compressed) 0.7 mm (0.0276 in.)
Valve Seat Angle 44.5° - 45.0°
Valve Seat Runout (MAX) 0.051 mm 0.002 in.
Va l v e S e a t W i d t h
Intake 1.75 - 2.36 mm 0.0698 - 0.0928 in.
Exhaust 1.71 - 2.32 mm 0.0673 - 0.0911 in.
Guide Bore Diameter (Std.) 6.975 - 7.00 mm 0.2747 - 0.2756 in.
Cylinder Head Warpage (Flatness) 0.0508 mm 0.002 in.
OIL PUMP
DESCRIPTION SPECIFICATION
Metric Standard
Clearance Over Rotors/End Face
(MAX)0.095 mm 0.0038 in.
Cover Out - of -Flat (MAX) 0.025 mm 0.001 in.
Inner and Outer Rotor Thickness 12.02 mm 0.4731 in.
Outer Rotor to pocket (Diametral)
clearance (MAX).235 mm .0093 in.
Outer Rotor Diameter (MIN) 85.925 mm 0.400 in.
Tip Clearance Between Rotors
(MAX)0.150 mm 0.006 in.
OIL PRESSURE
SPECIFICATION SPECIFICATION
Metric Standard
At Curb Idle Speed (MIN)* 25 kPa 4 psi
@ 3000 rpm 170 - 758 kPa 25 - 110 psi
* CAUTION: If pressure is zero at curb idle, DO NOT run engine at 3000 rpm.
TORQUE
DESCRIPTION Nꞏm Ft. Lbs. In. Lbs.
Bolt - Camshaft
Non - Oiled Sprocket Bolt 122 90 -
Bearing Cap Bolts 11 - 100
Bolt - Counterbalance shaft retaining 28 - 250
Bolts - Timing Chain Cover 58 43 -
Bolts - Connecting Rod Cap 27 20 -
PLUS 90° TURN
Bolts - Bed Plate Refer to Procedure
Bolt - Crankshaft Damper 175 130 -

INSTALLATION
1. Install filter element into housing.
2. Position housing cover into housing locating tabs.
3. Pry up 4 spring clips and lock cover to housing.
4. Install air duct to air cleaner cover and tighten hose clamp to 3 Nꞏm (30 in.lbs.)torque.
5. If any other hose clamps were removed from air intake system, tighten themto3.4Nꞏm(30in.lbs.)torque.
6. If any bolts were removed from air resonator housing or air intake tubing, tighten them to 4.5 Nꞏm (40 in. lbs.)
torque.

INSTALLATION
NOTE: The cylinder head bolts are tightened using
a torque plus angle procedure. The bolts must be
examined BEFORE reuse. If the threads are
necked down (2) the bolts should be replaced.
Necking can be checked by holding a straight edge
against the threads. If all the threads do not contact
the scale, the bolt should be replaced .
CAUTION: When cleaning cylinder head and cylin-
der block surfaces, DO NOT use a metal scraper
(1) because the surfaces could be cut or ground.
Use only a wooden or plastic scraper.
1. Clean the cylinder head and cylinder block mating
surfaces.

2. Position the new cylinder head gasket on the locat-
ing dowels.
CAUTION: When installing cylinder head, use care
not damage the tensioner arm or the guide arm.
3. Position the cylinder head onto the cylinder block.
Make sure the cylinder head seats fully over the
locating dowels.
NOTE: The four smaller cylinder head mounting
bolts require sealant to be added to them before
installing. Failure to do so may cause leaks.
4. Lubricate the cylinder head bolt threads with clean
engine oil and install the eight M11 bolts.
5. Coat the four M8 cylinder head bolts withMopar
Lock and Seal Adhesivethen install the bolts.
NOTE: The cylinder head bolts are tightened using
an angle torque procedure, however, the bolts are
not a torque-to-yield design.
6. Tighten the bolts in sequence using the following steps and torque values:
Step 1: Tighten bolts 1-8, 27 Nꞏm (20 ft. lbs.).
Step 2: Verify that bolts 1-8, all reached 27 Nꞏm (20 ft. lbs.), by repeatingstep 1 without loosening the bolts.
Tightenbolts9thru12to14Nꞏm(10ft.lbs.).
Step 3: Tighten bolts 1-8, 90 degrees.
Step 4: Tighten bolts 1-8, 90 degrees, again. Tighten bolts 9-12, 26 Nꞏm (19ft. lbs.)
7. Position the secondary chain onto the camshaft drive gear, making sure one marked chain link is on either side
of the V6 mark on the gear then using Special Tool 8428 Camshaft Wrench, position the gear onto the camshaft.
CAUTION: Remove excess oil from camshaft sprocket retaining bolt before reinstalling bolt. Failure to do so
may cause over-torqueing of bolt resulting in bolt failure.
8. Install the camshaft drive gear retaining bolt.
9. Install the left side secondary chain guide (Refer to 9 - ENGINE/VALVE TIMING/TIMING BELT/CHAIN AND
SPROCKETS - INSTALLATION).
10. Install the cylinder head access plug.
11. Re-set and install the left side secondary chain tensioner (Refer to 9 -ENGINE/VALVE TIMING/TIMING BELT/
CHAIN AND SPROCKETS - INSTALLATION).
12. Remove Special Tool 8429.
13. Install the timing chain cover (Refer to 9 - ENGINE/VALVE TIMING/TIMING BELT / CHAIN COVER(S) -
INSTALLATION).
14. Install the crankshaft damper (Refer to 9 - ENGINE/ENGINE BLOCK/VIBRATION DAMPER - INSTALLATION).
Tighten damper bolt 175 Nꞏm (130 Ft. Lbs.).
15. Install the power steering pump.
16. Install the fan blade assembly and fan shroud (Refer to 7 - COOLING/ENGINE/RADIATOR FAN - INSTALLA-
TION).
17. Install the cylinder head cover (Refer to 9 - ENGINE/CYLINDER HEAD/CYLINDER HEAD COVER(S) - INSTAL-
LATION).
18. Install the master cylinder and booster assembly (Refer to 5 - BRAKES/HYDRAULIC/MECHANICAL/POWER
BRAKE BOOSTER - INSTALLATION).
19. Install the intake manifold (Refer to 9 - ENGINE/MANIFOLDS/INTAKE MANIFOLD - INSTALLATION).
20. Refill the cooling system (Refer to 7 - COOLING - STANDARD PROCEDURE).

6. Hold the camshaft with Special Tool 8428 Camshaft
Wrench , while removing the camshaft sprocket
bolt and sprocket.
7. Using Special Tool 8428 Camshaft Wrench, gently
allow the camshaft to rotate 5° clockwise until the
camshaft is in the neutral position (no valve load).
8. Starting at the outside working inward, loosen the
camshaft bearing cap retaining bolts 1/2 turn at a
time. Repeat until all load is off the bearing caps.
CAUTION: DO NOT STAMP OR STRIKE THE CAM-
SHAFT BEARING CAPS. SEVERE DAMAGE WILL
OCCUR TO THE BEARING CAPS.
NOTE: When the camshaft is removed the rocker
arms may slide downward, mark the rocker arms
before removing camshaft.
9. Remove the camshaft bearing caps and the
camshaft.
INSTALLATION
1. Lubricate camshaft journals with clean engine oil.
NOTE: Position the left side camshaft so that the
camshaft sprocket dowel is near the 1 o’clock
position, This will place the camshaft at the neu-
tral position easing the installation of the camshaft
bearing caps.
2. Position the camshaft into the cylinder head.
3. Install the camshaft bearing caps, hand tighten the
retaining bolts.
NOTE: Caps should be installed so that the
stamped numbers on the caps are in numerical
order, ( 1 thru 4 ) from the front to the rear of the
engine. All caps should be installed so that the
stamped arrows on the caps point toward the front
of the engine.
4. Working in 1/2 turn increments, tighten the bearing
cap retaining bolts starting with the middle cap
working outward.
5. Torque the camshaft bearing cap retaining bolts to
11 N ꞏm ( 1 0 0 i n . l b s . ) .
6. Position the camshaft drive gear into the timing chain aligning the V6 mark between the two marked chain links
(Two links marked during removal).
7. Using Special Tool 8428 Camshaft Wrench, rotate the camshaft until the camshaft sprocket dowel is aligned with
the slot in the camshaft sprocket. Install the sprocket onto the camshaft.
CAUTION: Remove excess oil from camshaft sprocket bolt. Failure to do so can cause bolt over-torque
resulting in bolt failure.
8. Remove excess oil from bolt, then install the camshaft sprocket retaining bolt and hand tighten.
9. Remove Special Tool 8379 timing chain wedge.

10. Using Special Tool 6958 spanner wrench with adapter pins 8346, torque the camshaft sprocket retaining bolt to
122Nꞏm(90ft.lbs.).
11. Install the cylinder head cover (Refer to 9 - ENGINE/CYLINDER HEAD/CYLINDER HEAD COVER(S) - INSTAL-
LATION).

REMOVAL
NOTE: The cylinder heads must be removed in
order to perform this procedure.
1. Remove rocker arms and lash adjusters (Refer to 9
- ENGINE/CYLINDER HEAD/ROCKER ARM /
ADJUSTER ASSY - REMOVAL).
2. Remove the camshaft bearing caps and the cam-
shaft.
NOTE: All valve springs and valves are removed in
the same manner; this procedure only covers one
valve and valve spring.
3. Using Special Tool C-3422–B or C-3422–C Valve
Spring Compressor and Special tool 8519 Adapter,
compress the valve spring.
NOTE: It may be necessary to tap the top of the
valve spring to loosen the spring retainers locks
enough to be removed.
4. Remove the two spring retainer lock halves.
NOTE: the valve spring is under tension use care when releasing the valve spring compressor.
5. Remove the valve spring compressor.
6. Remove the spring retainer, and the spring.
NOTE: Check for sharp edges on the keeper grooves. Remove any burrs from thevalvestembeforeremov-
ing the valve from the cylinder head.
7. Remove the valve from the cylinder head.
NOTE: The valve stem seals are common between intake and exhaust.
8. Remove the valve stem seal. Mark the valve for proper installation.
TESTING VALVE SPRINGS
NOTE: Whenever the valves are removed from the
cylinder head it is recommended that the valve
springs be inspected and tested for reuse.
Inspect the valve springs for physical signs of wear or
damage. Turn table of tool C-647 (1) until surface is in
line with the 40.12 mm (1.579 in.) mark on the
threaded stud and the zero mark on the front. Place
spring over the stud on the table and lift compressing
lever to set tone device. Pull on torque wrench until a
Ping is heard. Take reading on torque wrench at this
instant. Multiply this reading by two. This will give the
spring load at test length. Fractional measurements
are indicated on the table for finer adjustments. Refer
to Specifications Section to obtain specified height and
allowable tensions. Replace any springs that do not
meet specifications.

18. Remove the cylinder head access plug (1,2).
19. Remove the right side secondary chain guide
(Refer to 9 - ENGINE/VALVE TIMING/TIMING
BELT/CHAIN AND SPROCKETS - REMOVAL).
CAUTION: The nut on the right side camshaft
sprocket should not be removed for any reason,
as the sprocket and camshaft sensor target wheel
is serviced as an assembly. If the nut was
removed, torque nut to 5 Nꞏm (44 in. lbs.).
20. Remove the retaining bolt and the camshaft drive
gear.
CAUTION: Do not allow the engine to rotate.
severe damage to the valve train can occur.
CAUTION: Do not overlook the four smaller bolts at the front of the cylinderhead.Donotattempttoremove
the cylinder head without removing these four bolts.
CAUTION: Do not hold or pry on the camshaft target wheel for any reason. A damaged target wheel can
result in a vehicle no start condition.
NOTE: The cylinder head is attached to the cylin-
der block with twelve bolts.
21. Remove the cylinder head retaining bolts.
22. Remove the cylinder head and gasket. Discard
the gasket.
CAUTION: Do not lay the cylinder head on its gas-
ket sealing surface, do to the design of the cylin-
der head gasket any distortion to the cylinder
head sealing surface may prevent the gasket from
properly sealing resulting in leaks.

INSTALLATION
INSTALLATION RIGHT CYLINDER HEAD
NOTE: The cylinder head bolts are tightened using
a torque plus angle procedure. The bolts must be
examined BEFORE reuse. If the threads are
necked down (2) the bolts should be replaced.
Necking can be checked by holding a straight edge
against the threads. If all the threads do not contact
the scale, the bolt should be replaced.
CAUTION: When cleaning cylinder head and cylin-
der block surfaces, DO NOT use a metal scraper
because the surfaces could be cut or ground. Use
only a wooden or plastic scraper (1).
1. Clean the cylinder head and cylinder block mating
surfaces.