engine DODGE RAM SRT-10 2006 Service Repair Manual

SPRINGS/SEALS-VALVE
DIAGNOSIS AND TESTING
VA LV E S P R I N G T E S T I N G
The valve springs should be tested whenever
removed for inspection, reconditioning, or replace-
ment.
1. Obtain specifications for spring tension at specified
spring length (Refer to 9 - ENGINE - SPECIFICA-
TIONS).
2. Turn table of Special Tool C-647 (2) until the sur-
face is in line with the spring length specification
mark on the threaded stud and the zero mark is on
the front.
3.Placespringoverstudonthetableandliftcom-
pressing lever to set tone device.
4. Pull on torque wrench (beam or dial type) until 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.
5. Compare reading to the specification. Discard the springs that do not meet specifications.
STANDARD PROCEDURE - VALVE SPRING/SEAL SERVICE IN-CAR
1. Disconnect negative battery cable.
2. Disconnect secondary ignition wires and remove
spark plugs.
3. Remove cylinder head cover(s) (Refer to 9 -
ENGINE/CYLINDER HEAD/CYLINDER HEAD
COVER(S) - REMOVAL).
4. Rotate crankshaft until No. 1 piston is at TDC on
compression stroke.
5. Remove rocker arms with pivots. The rocker arms
should not be disturbed and remain on pivot block.
6. With air hose attached to spark plug adapter
installed in No. 1 spark plug hole, apply 620.5 -
689 kPa (90 - 100 psi) air pressure. This is to hold
valves into place while servicing components.
CAUTION: Place a suitable shop towel around the
valve spring being serviced to prevent the valve
retaining locks from entering the engine once the
valve spring is compressed.
7. Using valve spring compressor MD998772-A with
insert 6716-A (1), compress valve spring (2) and
remove valve retaining locks.
8. Release valve spring compressor (1).
9. Remove valve spring and retainer.
10. Remove valve seal.
NOTE: Black valve seals are intake. Brown valve seals are exhaust.

11. The intake and exhaust valve stem seals should be pushed firmly and squarely over the valve guide using the
valve stem as guide. Push seal against top of guide. When installing the valve retainer locks, compress the
springonly enoughto install the locks.
CAUTION: Do not pinch seal between retainer and top of valve guide.
12. Follow the same procedure on the remaining 9 cylinders.Make sure piston is at TDC on the cylinder the
valve spring is being removed.
13. Remove spark plug adapter tool.
14. Install rocker arm and pedestal assemblies. Ensure push rods are seated properly under each rocker arm.
Tightenrockerarmboltsto35Nꞏm(26ft.lbs.).
15. Install cylinder head covers (Refer to 9 - ENGINE/CYLINDER HEAD/CYLINDERHEADCOVER(S)-INSTAL-
LATION).
16. Install spark plugs and connect secondary ignition wires.
17. Connect negative battery cable.
REMOVAL
NOTE: Before replacing parts, inspect all related
valvetrain components for damage to prevent
engine misfire.
1. With the cylinder head removed, compress valve
springs using a valve spring compressor (1).
2. Remove valve retaining locks.
3. Slowly release valve spring compressor.
4. Remove valve spring retainer and valve spring.
5. Before removing the valves,remove any burrs
from valve stem lock grooves to prevent dam-
age to the valve guides.Identify the valves to
ensure installation in original location.
6. Remove valve seal.
7. Repeat procedure for remaining valves.

INSTALLATION
NOTE: Before replacing parts, inspect all related
valvetrain components for damage to prevent
engine misfire.
NOTE: Black valve seals are intake. Brown valve
seals are exhaust.
1. Install valve seals (1).
2. Coat the valve stems with clean engine oil and
insert them in the cylinder head.
3. Install valve spring seats (6).
4. Install valve springs and valve retainers (2).
5. Compress valve springs with a valve spring com-
pressor. Install retaining locks and release tool.
6.If valves and/or seats have been reground,
measure valve tip height (A). Make sure mea-
surements are taken from cylinder head surface
to the top of valve stem.If valve tip height is
greater than 52.96 mm (2.085 in.), grind the valve
tip until within specifications.
7.If valves and/or seats have been reground,
measure installed height of springs (B). Make
sure measurements are taken from top of
spring seat to the bottom surface of valve
spring retainer.If height is greater than 44.45 mm (1.75 in.), install a 0.794 mm (.031 in.) spacer in head
counter-bore under the valve spring seat to bring spring height back to 43.69 - 44.45 mm (1.72 - 1.75 in.).

INTAKE/EXHAUST - VALVES/SEATS/GUIDES
STANDARD PROCEDURE - VALVE AND VALVE SEAT - REFACING
The intake and exhaust valves have a 44.5° - 45° face
angle (1). The valve seats (2) have a 44.5° - 45° face
angle.
Inspect the remaining margin after the valves are
refaced. (Refer to 9 - ENGINE - SPECIFICATIONS).
VALVE SEATS
CAUTION: Do not un-shroud valves during valve
seat refacing.
1. When refacing valve seats, it is important that the
correct size valve guide pilot be used for reseating
stones. A true and complete surface must be
obtained.
2. Measure the concentricity of valve seat using a dial
indicator. Total runout should not exceed 0.051 mm
(0.002 in.) total indicator reading.
3. Inspect the valve seat with Prussian blue to deter-
mine where the valve contacts the seat. To do this,
coat valve seatLIGHTLYwith Prussian blue then
set valve in place. Rotate the valve with light pres-
sure. If the blue is transferred to the center of valve
face, contact is satisfactory. If the blue is trans-
ferred to top edge of valve face, lower valve seat with a 30° stone. If the blue is transferred to the bottom edge
of valve face raise valve seat with a 75° stone.
NOTE: Valve seats which are worn or burned can be reworked, provided that correct angle and seat width
are maintained. Otherwise cylinder head must be replaced.
4. When seat is properly positioned the width of both seats should be 1.02 - 1.52 mm (0.040 - 0.060 in.).

INSPECTION
Va l v e
1. Clean valves thoroughly and discard any burned,
bent, warped, and cracked valves.
2. Measure valve stems for wear (Refer to 9 -
ENGINE - SPECIFICATIONS).
NOTE: Valve stems are chrome plated and should
not be polished.
Valve Guide
1. Remove carbon and varnish deposits from inside of
valve guides with a reliable guide cleaner.
2. Measure valve stem guide clearance as follows:
1. Install valve into cylinder head so it is 14 mm
(0.551 in.) off the valve seat. A small piece of hose
maybeusedtoholdvalveinplace.
2. Attach Special Tool C-3339, dial indicator to cyl-
inder head and set it at right angle of valve stem
being measured.
3. Move valve to and from the indicator. (Refer to 9
- ENGINE - SPECIFICATIONS) for valve guide
specifications. If guides are out of specifications,
ream to next oversize.
3. Ream the guides for valves with oversized stems if
dial indicator reading is excessive or if the stems
are scuffed or scored.
4. Service valves with oversize stems and over size seals are available in 0.15 mm (0.005 in.) and 0.40 mm (0.015
in.) oversize.
NOTE: Oversize seals must be used with oversize valves.
5. Select the correct size reamer to accommodate the oversize valve stem. Refer to Valve Guide Oversize Chart.
6. Slowly turn reamer by hand and clean guide thoroughly before installingnew valve.Do not attempt to ream the
valve guides from standard directly to 0.40 mm (0.015 in.). Use a step procedure of 0.15 mm (0.005 in.) to
0.40 mm (0.015 in.), so the valve guides may be reamed true in relation to thevalve seat. After reaming
guides, the seat runout should be measured and resurfaced if necessary. See Refacing Valves and Valve
Seats (Refer to 9 - ENGINE/CYLINDER HEAD/INTAKE/EXHAUST VALVES & SEATS - STANDARD PROCE-
DURE).
NOTE: Replace cylinder head if guide does not clean up with 0.40 mm (0.015 inch) oversize reamer, or if
guide is loose in cylinder head.
VALVE GUIDE OVERSIZE CHART

COVER-TIMING CHAIN
REMOVAL
1. Disconnect negative battery cable.
2. Disconnect throttle body air inlet duct at the throttle
body, CCV hose, disconnect the IAT sensor and
remove air cleaner housing cover (Refer to 9 -
ENGINE/AIR INTAKE SYSTEM - REMOVAL).
3. Remove the oil indicator tube (1) fastener at the
right cylinder head cover.
4. Raise and support the vehicle.
5. Remove the lower engine shield.
6. Drain cooling system (Refer to 7 - COOLING/EN-
GINE - STANDARD PROCEDURE - DRAINING
COOLING SYSTEM).
7. Drain engine oil and remove oil filter (Refer to 9 -
ENGINE/LUBRICATION/OIL - STANDARD PRO-
CEDURE).
8. Drain power steering.
9. Disconnect the cooling fan return hose at radiator
fan.
10. Disconnect the radiator fan pressure hose to
power steering rack.
11. Disconnect the power steering hose to power steering pump.
12. Separate the A/C hose from the radiator fan module.
13. Remove the lower radiator hoses.
14. Remove the front frame cross member (Refer to 13 - FRAME & BUMPERS/FRAME/FRONT CROSSMEMBER
- REMOVAL).
15. Remove the flywheel inspection cover.
NOTE: Capture and properly dispose of any fuel spillage.
16. Disconnect oil cooler line at the timing cover using Special Tool 9005 (Refer to 9 - ENGINE/LUBRICATION/OIL
COOLER & LINES - STANDARD PROCEDURE).
17. Separate the oil cooler coolant hose from the timing cover.

18. Wiggle oil indicator tube free of oil pan.
19. Loosen engine mounts (3 and 5).
NOTE: Care must be taken not to damage the A/C
compressor when placing the jack stand and rais-
ing the engine
20. Raise and support the engine with a jack stand at
the A/C bracket.
21. Remove the engine oil pan.
22. Lower the engine and remove the jack stand.
23. Remove the oil pump pick up tube (2).
24. Remove accessory drive belt (Refer to 7 - COOL-
ING/ACCESSORY DRIVE/DRIVE BELTS -
REMOVAL).

25. Remove A/C compressor mounting bolts. Reposi-
tion A/C compressor.Do notdisconnect A/C lines.
26. Disconnect the power steering line support
bracket at the radiator.
27. Lower the vehicle.
28. Remove the upper radiator hose and coolant
recovery container.
29. Remove the cooling fan module (Refer to 7 -
COOLING/ENGINE/RADIATOR FAN -
REMOVAL).
30. Remove the upper idler pulley.
31. Remove power steering pump mounting bolts.
Reposition power steering pump aside.Do not
disconnect power steering lines.
32. Remove the generator (Refer to 8 - ELECTRI-
CAL/CHARGING/GENERATOR - REMOVAL).
33. Disconnect the heater hose at the timing cover.
34. Disconnect the ground wire at the thermostat
housing.
NOTE: Do Not remove the camshaft position sensor from the timing cover.
35. Disconnect the camshaft sensor wiring harness connector.
36. Disconnect engine coolant temperature (ECT) sensor connector.
37. Remove crankshaft pulley and damper (Refer to 9 - ENGINE/ENGINE BLOCK/VIBRATION DAMPER -
REMOVAL).
38. Remove the timing cover.
INSTALLATION
CAUTION: Do not use a metal scraper to clean alu-
minum sealing surfaces, as damage to surfaces
may occur. Use only a plastic scraper and Mopar
Brake Parts Cleaner or the equivalent.
1. Be sure mating surfaces of chain case cover and
cylinder block are clean and free from burrs.
Crankshaft oil seal must be removed to insure cor-
rect oil pump engagement.
2. Install the timing chain cover gasket.
3. Position the oil pump inner rotor mating flats in the
same position as the crankshaft drive flats.
4. Install the timing chain cover onto crankshaft.
Ensure the oil pump is engaged on the crankshaft
correctly or severe damage may result (Refer to 9 -
ENGINE/LUBRICATION/OIL PUMP -
INSTALLATION).

5. Hand start bolts No.1 and No.2.
6. Loosely install A/C compressor mounting bracket.
7. Hand start remaining timing chain cover bolts.
8. Torque timing chain cover bolts in the sequence
showninto23Nꞏm(200in.lbs.).
9. Torque A/C compressor mounting bracket bolts to
23 Nꞏm (200 in. lbs.).
10. Install crankshaft oil seal (Refer to 9 - ENGINE/
ENGINE BLOCK/CRANKSHAFT OIL SEAL -
FRONT - INSTALLATION).
11. Raise vehicle on hoist.
12. Install oil pump pick up tube using anewo-ring.
Torque 1/4–20 bolt to 11 Nꞏm (95 in. lbs.). Torque
5/16–18 nuts to 23 Nꞏm (200 in. lbs.).
13. Support the engine with a jack stand.
14. Install oil pan and drain plug (Refer to 9 -
ENGINE/LUBRICATION/OIL PAN - INSTALLA-
TION).
15. Remove the jackstand.
16. Tighten the engine mount to frame nuts to 102
Nꞏm (75 ft.lbs.).
17. Connect the oil cooler coolant hose to the timing
cover.
18. Connect the oil cooler line (Refer to 9 - ENGINE/
LUBRICATION/OIL COOLER & LINES - STAN-
DARD PROCEDURE).
19. Install the lower radiator hose.
20. Install the flywheel inspection cover.
21. Install the front frame cross member (Refer to 13
- FRAME & BUMPERS/FRAME/FRONT CROSS-
MEMBER - INSTALLATION).
22. Lower vehicle.
23. Position the compressor and install A/C compressor mounting bolts. Torque bolts to 23 Nꞏm (200 in. lbs.).
24. Connect heater hose at timing cover.
25. Install crankshaft damper and pulley (Refer to 9 - ENGINE/ENGINE BLOCK/VIBRATION DAMPER - INSTAL-
LATION).
26. Install generator. Connect electrical connectors.
27. Install the idler pulley.
28. Connect the camshaft position sensor wiring harness connector.
29. Connect engine coolant temperature (ECT) sensor wiring harness connector.
30. Install power steering pump mounting bolts.
31. Install accessory drive belt (Refer to 7 - COOLING/ACCESSORY DRIVE/DRIVE BELTS - INSTALLATION).
32. Install the radiator fan assembly (Refer to 7 - COOLING/ENGINE/RADIATOR FAN - INSTALLATION).

33. Raise and support the vehicle.
34. Connect the hydraulic lines to the fan assembly and steering rack then connect the A/C hose to the fan shroud.
35. Install aNewoil filter.
36. Lower the vehicle.
37. Install upper radiator hose and connect the ground wire at the thermostat housing.
38. Install air cleaner housing cover assembly, connect throttle body airinlet duct, IAT sensor and CCV hose. (Refer
to 9 - ENGINE/AIR INTAKE SYSTEM - INSTALLATION).
39. Fill and purge air from the power steering system.
40. Fill engine crankcase with proper oil to correct level.
41. Fill and purge air from the cooling system (Refer to 7 - COOLING/ENGINE -STANDARD PROCEDURE - FILL-
ING COOLING SYSTEM).
42. Connect negative battery cable.
43. Start the vehicle and inspect for leaks.
44. Install the lower engine shield.