DODGE RAM SRT-10 2006 Service Repair Manual

2. Using a mirror, locate the TDC arrow on the front
cover. Rotate the crankshaft until the mark on the
crankshaft damper is aligned with the TDC arrow
on the front cover. The engine is now at TDC.
3. Note the location of the V8 mark stamped into the camshaft drive gears. IftheV8markoneachcamshaftdrive
gear is at the twelve o’clock position, the engine is at TDC (cylinder #1) onthe exhaust stroke. If the V8 mark on
each gear is at the six o’clock position, the engine is at TDC (cylinder #1) on the compression stroke.
4. If both of the camshaft drive gears are off in the same or opposite directions, the primary chain or both second-
ary chains are at fault. Refer to Timing Chain and Sprockets procedure in this section.
5. If only one of the camshaft drive gears is off and the other is correct, theproblem is confined to one secondary
chain. Refer to Single camshaft timing, in this procedure.
6. If both camshaft drive gear V8 marks are at the twelve o’clock or the six o’clock position the engine base timing
is correct. Reinstall the cylinder head covers.
SINGLE CAMSHAFT TIMING
NOTE: to adjust the timing on one camshaft, peform the following procedure.

1. Using Chain Tensioner Wedge, special tool 8350 (3), stabilize the secondary chain drive. For reference purposes,
mark the chain-to-sprocket position.
2. Remove the camshaft drive gear retaining bolt.
3. Carefully remove the camshaft drive gear from the camshaft.
4. Re-index the camshaft drive gear in the chain until the V8 mark is at the same position as the V8 mark on the
opposite camshaft drive gear.
NOTE: When gripping the camshaft, place the pli-
ers on the tube portion of the camshaft only. Do
not grip the lobes or the sprocket areas.
5. Using a suitable pair of adjustable pliers (1), rotate
the camshaft until the alignment dowel (2) on the
camshaft is aligned with the slot in the camshaft
drive gear.

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.
6. Position the camshaft drive gear onto the camshaft,
remove oil from bolt then install the retaining bolt.
Using Special Tools, Spanner Wrench 6958 with
Adapter Pins 8346 and a suitable torque wrench
(1), Tighten retaining bolt to 122 Nꞏm (90 ft. Lbs.).
7. Remove special tool 8350 (3,4).

8. Rotate the crankshaft two full revolutions, then reverify that the camshaft drive gear V8 marks are in fact aligned.
9. Install the cylinder head covers (Refer to 9 - ENGINE/CYLINDER HEAD/CYLINDER HEAD COVER(S) - INSTAL-
LATION).

COVER - TIMING
REMOVAL
1. Disconnect the battery negative cable.
2. Drain cooling system (Refer to 7 - COOLING -
STANDARD PROCEDURE).
3. Disconnect both heater hoses at timing cover.
4. Disconnect lower radiator hose at engine.
5. Remove crankshaft damper (Refer to 9 - ENGINE/
ENGINE BLOCK/VIBRATION DAMPER -
REMOVAL).
6. Remove accessory drive belt tensioner assembly
(1).
7. Remove the generator and A/C compressor.
CAUTION:The4.7LengineusesanRTVsealer
instead of a gasket to seal the front cover to the
engine block, from the factory. For service, Mopar
Grey Engine RTV sealant must be substituted.
NOTE: It is not necessary to remove the water
pump for timing cover removal.
8. Remove the bolts holding the timing cover to
engine block.
9. Remove cover.

INSTALLATION
CAUTION: Do not use oil based liquids to clean
timing cover or block surfaces. Use only rubbing
alcohol, along with plastic or wooden scrapers.
Use no wire brushes or abrasive wheels or metal
scrapers, or damage to surfaces could result.
1. Clean timing chain cover and block surface using
rubbing alcohol.
CAUTION: The 4.7L can use a special RTV sealer
instead of a carrier gasket to seal the timing cover
to the engine block, from the factory. For service
repairs, Mopar
Grey Engine RTV must be used as
a substitute, if RTV is present. If the front cover
being used has no provisions for the water pas-
sage o-rings, then Mopar
Grey Engine RTV must
be applied around the water passages.
2. Inspect the water passage o-rings, if equipped for
any damage, and replace as necessary.
3. Apply Mopar
Grey Engine RTV sealer to the front
cover following the path above, using a 3 to 4mm
thick bead.
4. Install cover. Tighten flange head fasteners in
sequence as shown in to 58 Nꞏm (43 ft. lbs.).
5. Install the A/C compressor and generator.
6. Install crankshaft damper (Refer to 9 - ENGINE/
ENGINE BLOCK/VIBRATION DAMPER - INSTAL-
LATION).
7. Install accessory drive belt tensioner assembly.
Tighten fastener to 54 Nꞏm (40 ft. lbs.).
8. Install lower radiator hose.
9. Install both heater hoses.
10. Fill cooling system (Refer to 7 - COOLING -
STANDARD PROCEDURE).
11. Connect the battery negative cable.

TIMING CHAIN & SPROCKETS
REMOVAL
1. Disconnect negative cable from battery.
2. Drain cooling system (Refer to 7 - COOLING -
STANDARD PROCEDURE).
3. Remove right and left cylinder head covers (Refer
to 9 - ENGINE/CYLINDER HEAD/CYLINDER
HEAD COVER(S) - REMOVAL).
4. Remove radiator fan shroud.
5. Rotate engine until timing mark (2) on crankshaft
damper aligns with TDC mark on timing chain
cover (2) (#1 cylinder exhaust stroke) and the cam-
shaft sprocket “V8” marks are at the 12 o’clock
position (1,2).

6. Remove power steering pump (Refer to 19 -
STEERING/PUMP - REMOVAL).
7. Remove access plugs (1,2) from left and right cyl-
inder heads for access to chain guide fasteners.
8. Remove the oil fill housing to gain access to the
right side tensioner arm fastener.
9. Remove crankshaft damper (Refer to 9 - ENGINE/
ENGINE BLOCK/VIBRATION DAMPER -
REMOVAL) and timing chain cover (Refer to 9 -
ENGINE/VALVE TIMING/TIMING BELT / CHAIN
COVER(S) - REMOVAL).
10. Collapse and pin primary chain tensioner (1).
CAUTION: Plate behind left secondary chain ten-
sioner could fall into oil pan. Therefore, cover pan
opening.
11. Remove secondary chain tensioners.
12. Remove camshaft position sensor (1) from right
cylinder head.

CAUTION: Care should be taken not to damage
camshaft target wheel. Do not hold target wheel
while loosening or tightening camshaft sprocket.
Do not place the target wheel near a magnetic
source of any kind. A damaged or magnetized tar-
get wheel could cause a vehicle no start condition.
CAUTION: Do not forcefully rotate the camshafts
or crankshaft independently of each other. Damag-
ing intake valve to piston contact will occur.
Ensure negative battery cable is disconnected to
guard against accidental starter engagement.
13. Remove left and right camshaft sprocket bolts.
14. While holding the left camshaft steel tube with
adjustable pliers (1), remove the left camshaft
sprocket. Slowly rotate the camshaft approxi-
mately 15 degrees clockwise to a neutral position.
15. While holding the right camshaft steel tube with
adjustable pliers (1), remove the right camshaft
sprocket. Slowly rotate the camshaft approxi-
mately 45 degrees counterclockwise to a neutral
position.
16. Remove idler sprocket assembly bolt.
17. Slide the idler sprocket assembly and crank
sprocket forward simultaneously to remove the
primary and secondary chains.
18. Remove both pivoting tensioner arms and chain
guides.
19. Remove chain tensioner.

INSPECTION
Inspect the following components:
Sprockets for excessive tooth wear. Some tooth markings are normal and nota cause for sprocket replace-
ment.
Idler sprocket assembly bushing and shaft for excessive wear.
Idler sprocket assembly spline joint. The joint should be tight with no backlash or axial movement.
Chain guides and tensioner arms. Replace these parts if grooving in plasticfaceismorethan1mm(0.039in.)
deep. If plastic face is severely grooved or melted, the tensioner lube jetmay be clogged. The tensioner
should be replaced.
Secondary chain tensioner piston and ratcheting device. Inspect for evidence of heavy contact between ten-
sioner piston and tensioner arm. If this condition exist the tensioner andtensioner arm should be replaced.
Primary chain tensioner plastic faces. Replace as required.