Service Information - 3.7L Engine: Removal & Installation Dodge Dakota III

REMOVAL - LEFT

Scheme 86

Scheme 87

1. Remove cylinder head cover «(Refer to ENGINE/CYLINDER HEAD/CYLINDER HEAD COVER(S) - REMOVAL)»(ref-247616-S02086164582007020100000) .
2. Set engine to TDC cylinder No. 1, camshaft sprocket V6 marks (1) at the 12 o'clock position.
3. Mark one link on the secondary timing chain on both sides of the V6 mark on the camshaft sprocket to aid in installation. CAUTION: Do not hold or pry on the camshaft target wheel (Located on the right side camshaft sprocket) for any reason, Severe damage will occur to the target wheel resulting in a vehicle no start condition.
4. Loosen but DO NOT remove the camshaft sprocket retaining bolt. Leave the bolt snug against the sprocket. NOTE: The timing chain tensioners must be secured prior to removing the camshaft sprockets. Failure to secure tensioners will allow the tensioners to extend, requiring timing chain cover removal in order to reset tensioners. CAUTION: Do not force wedge past the narrowest point between the chain strands. Damage to the tensioners may occur. 1 - SPECIAL TOOL 8379 2 - CAMSHAFT SPROCKET 3 - CAMSHAFT SPROCKET BOLT 4 - CYLINDER HEAD
5. Position Special Tool 8379 timing chain wedge (1) between the timing chain strands, tap the tool to securely wedge the timing chain against the tensioner arm and guide. 1 - Camshaft hole 2 - Special Tool 8428
6. Hold the camshaft with Special Tool 8428 Camshaft Wrench (2), while removing the camshaft sprocket bolt and sprocket.
7. Using Special Tool 8428 Camshaft Wrench (2), 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 CAMSHAFT 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

Note. The gasket may be used again, provided no cuts, tears, or deformation has occurred.

1. Clean cylinder head cover and both sealing surfaces. Inspect and replace gasket as necessary.
2. Tighten cylinder head cover bolts and double ended studs to 12 N.m (105 in. lbs.).
3. Install left side breather and connect breather tube.
4. Connect injector electrical connectors and injector harness retaining clips.
5. Install the resonator and air inlet hose.
6. Connect negative cable to battery.

REMOVAL

1. Remove the cylinder head cover «(Refer to ENGINE/CYLINDER HEAD/CYLINDER HEAD COVER(S) - REMOVAL)»(ref-247616-S02086164582007020100000) .
2. Using Special Tool 8516 Valve Spring Compressor, remove the rocker arms and the hydraulic lash adjusters.
3. Remove the spark plug for the cylinder the valve spring and seal are to be removed from.
4. Apply shop air to the cylinder to hold the valves in place when the spring is removed. NOTE: All six valve springs and seals are removed in the same manner; this procedure only covers one valve seal and valve spring.
5. Using Special Tool 8387 Valve Spring Compressor, 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.
6. Remove the two spring retainer lock halves. NOTE: the valve spring is under tension use care when releasing the valve spring compressor.
7. Remove the valve spring compressor. NOTE: The valve springs are NOT common between intake and exhaust.
8. Remove the spring retainer, and the spring.
9. Remove the valve stem seal.

Note. The valve stem seals are common between intake and exhaust.

Note. All six valve springs and seals are removed in the same manner; this procedure only covers one valve seal and valve spring.

1. Apply shop air to the cylinder to hold the valves in place while the spring is installed. NOTE: The valve stem seals are common between intake and exhaust.
2. Install the valve stem seal. NOTE: The valve springs are NOT common between intake and exhaust.
3. Install the spring retainer, and the spring.
4. Using Special Tool 8387 Valve Spring Compressor, compress the valve spring.
5. Install the two spring retainer lock halves. NOTE: the valve spring is under tension use care when releasing the valve spring compressor.
6. Remove the valve spring compressor.
7. Disconnect the shop air to the cylinder.
8. Install the spark plug for the cylinder the valve spring and seal was installed on.
9. Using Special Tool 8516 Valve Spring Compressor, install the rocker arms and the hydraulic lash adjusters.
10. Install the cylinder head cover «(Refer to ENGINE/CYLINDER HEAD/CYLINDER HEAD COVER(S) - INSTALLATION)»(ref-247616-S39926205412007020100000) .

Note. To remove the crankshaft from the engine, the engine must be removed from the vehicle.

Scheme 88

1. Remove the engine «(Refer to ENGINE - REMOVAL)»(ref-247616-S31908007552007020100000) .
2. Remove the engine oil pump «(Refer to ENGINE/LUBRICATION/OIL PUMP - REMOVAL)»(ref-247616-S12825755432007020100000) . CAUTION: DO NOT pry on the oil pan gasket when removing the oil pan, The oil pan gasket is mounted to the cylinder block in three locations and will remain attached to block when removing oil pan. Gasket can not be removed with oil pan.
3. Remove the bedplate mounting bolts. Note the location of the two stud bolts for installation.
4. Remove the connecting rods from the crankshaft. CAUTION: The bedplate to cylinder block mating surface is a critical sealing surface. Do not pry on or damage this surface in anyway. NOTE: The bedplate contains the lower main bearing halves. Use care when handling bedplate as not to drop or damage bearing halves. Installing main bearing halves in the wrong position will cause severe damage to the crankshaft. NOTE: The bedplate has pry points (1) cast into it. Use these points only.
5. Carefully pry on the pry points (1) to loosen the bedplate then remove the bedplate. CAUTION: When removing the crankshaft, use care not to damage bearing surfaces on the crankshaft.
6. Remove the crankshaft.
7. Remove the crankshaft tone wheel.

1. Position the flexplate onto the crankshaft and install the bolts hand tight.
2. Tighten the flexplate retaining bolts to 95 N.m (70 ft. lbs.) in the sequence shown. see scheme 95
3. Install the transmission. «(Refer to TRANSMISSION/TRANSAXLE/AUTOMATIC - 42RLE - INSTALLATION)»(ref-247625-S02764766522007020100000).

Scheme 89

The pistons (2) are made of a high strength aluminum alloy. The connecting rods are made of forged powdered metal, with a "fractured cap" design (1). A full floating piston pin (3) is used to attach the piston to the connecting rod.

Scheme 90

Inspect the connecting rod bearings for scoring (10 and 3). Check the bearings for normal wear patterns, scoring, grooving, fatigue and pitting. Replace any bearing that shows abnormal wear.

Inspect the connecting rod journals for signs of scoring, nicks and burrs.

Misaligned or bent connecting rods can cause abnormal wear on pistons, piston rings, cylinder walls, connecting rod bearings and crankshaft connecting rod journals. If wear patterns or damage to any of these components indicate the probability of a misaligned connecting rod, inspect it for correct rod alignment. Replace misaligned, bent or twisted connecting rods.

Scheme 91

Scheme 92

Scheme 93

1. Wipe the oil from the connecting rod journal.
2. Lubricate the upper bearing insert (2) and position in connecting rod (1). Center bearing insert in connecting rod
3. Measure at point A and point B. Measurement should be less then .50 mm (.0196 in.).
4. Use piston ring compressor (3) and Guide Pins Special Tool 8507 (4) to install the rod and piston assemblies. The oil slinger slots in the rods must face front of the engine. The "F"'s (1) near the piston wrist pin bore should point to the front of the engine.
5. Install the lower bearing insert in the bearing cap. Center bearing insert in connecting rod. The lower insert must be dry. Place strip of Plastigage (1) across full width of the lower insert at the center of bearing cap. Plastigage must not crumble in use. If brittle, obtain fresh stock.
6. Install bearing cap and connecting rod on the journal and tighten bolts to 27 N.m (20 ft. lbs.) plus a 90° turn. DO NOT rotate crankshaft. Plastigage will smear, resulting in inaccurate indication.
7. Remove the bearing cap and determine amount of bearing-to-journal clearance by measuring the width of compressed Plastigage (2). Refer to «CONNECTING RODS»(ref-247616-S05883643602007020100000) table for the proper clearance. Plastigage should indicate the same clearance across the entire width of the insert. If the clearance varies, it may be caused by either a tapered journal, bent connecting rod or foreign material trapped between the insert and cap or rod.
8. If the correct clearance is indicated, replacement of the bearing inserts is not necessary. Remove the Plastigage from crankshaft journal and bearing insert. Proceed with installation.
9. If bearing-to-journal clearance exceeds the specification, determine which services bearing set to use the bearing sizes are as follows: Bearing Mark SIZE USED WITH JOURNAL SIZE .025 US .025 mm 57.883-57.867 mm (.001 in.) (2.2788-2.2783 in.) Std. STANDARD 57.908-57.892 mm (2.2798-2.2792 in.) .250 US .250 mm 57.658-57.646 mm - (.010 in.) (2.2700-2.2695 in.) CAUTION: Connecting Rod Bolts are Torque to Yield Bolts and Must Not Be Reused. Always replace the Rod Bolts whenever they are loosened or removed.
10. Repeat the Plastigage measurement to verify your bearing selection prior to final assembly.
11. Once you have selected the proper insert, install the insert and cap. Tighten the connecting rod bolts to 27 N.m (20 ft. lbs.) plus a 90° turn.

Scheme 94

Slide snug-fitting feeler gauge between the connecting rod and crankshaft journal flange. Refer to SPECIFICATIONS for the proper clearance. Replace the connecting rod if the side clearance is not within specification.

Scheme 95

Scheme 96

1. To correctly select the proper size piston, a cylinder bore gauge (2), capable of reading in 0.003 mm (.0001 in.) INCREMENTS is required. If a bore gauge is not available, do not use an inside micrometer.
2. Measure the inside diameter of the cylinder bore at a point 38.0 mm (1.5 inches) below top of bore (4). Start perpendicular (across or at 90 degrees) to the axis of the crankshaft at point A and then take an additional bore reading 90 degrees to that at point B.
3. The coated pistons will be serviced with the piston pin and connecting rod pre-assembled.
4. The coating material (1) and (2) is applied to the piston after the final piston machining process. Measuring the outside diameter of a coated piston will not provide accurate results. Therefore measuring the inside diameter of the cylinder bore with a dial Bore Gauge is MANDATORY . To correctly select the proper size piston, a cylinder bore gauge capable of reading in 0.003 mm (.0001 in.) increments is required.
5. Piston installation into the cylinder bore requires slightly more pressure than that required for non-coated pistons. The bonded coating on the piston will give the appearance of a line-to-line fit with the cylinder bore.

1. Disconnect negative cable from battery.
2. Remove the following components: Oil pan and gasket/windage tray «(Refer to ENGINE/LUBRICATION/OIL PAN - REMOVAL)»(ref-247616-S18980101622007020100000) . Cylinder head(s) «(Refer to ENGINE/CYLINDER HEAD - REMOVAL)»(ref-247616-S21043140772007020100000) .
3. If necessary, remove top ridge of cylinder bores with a reliable ridge reamer before removing pistons from cylinder block. Be sure to keep tops of pistons covered during this operation. Pistons and connecting rods must be removed from top of cylinder block. When removing piston and connecting rod assemblies from the engine, rotate crankshaft so the each connecting rod is centered in cylinder bore. CAUTION: DO NOT use a number stamp or a punch to mark connecting rods or caps, as damage to connecting rods could occur NOTE: Connecting rods and bearing caps are not interchangeable and should be marked before removing to ensure correct reassembly.
4. Mark connecting rod and bearing cap positions using a permanent ink marker or scribe tool. CAUTION: Care must be taken not to damage the fractured rod and cap joint face surfaces, as engine damage may occur.
5. Remove connecting rod cap. Install Special Tool 8507 Connecting Rod Guides into the connecting rod being removed. Remove piston from cylinder bore. Repeat this procedure for each piston being removed. CAUTION: Care must be taken not to nick crankshaft journals, as engine damage may occur
6. Immediately after piston and connecting rod removal, install bearing cap on the mating connecting rod to prevent damage to the fractured cap and rod surfaces.

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 61 N.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 54 N.m (40 ft. lbs.).

1. Install oil pressure sender.
2. Connect oil pressure sender wire.
3. Install front splash shield.
4. Lower vehicle.
5. Connect the negative battery cable.

1. Remove the oil pan and pick-up tube «(Refer to ENGINE/LUBRICATION/OIL PAN - REMOVAL)»(ref-247616-S18980101622007020100000) .
2. Remove the timing chain cover «(Refer to ENGINE/VALVE TIMING/TIMING BELT / CHAIN COVER(S) - REMOVAL)»(ref-247616-S29943246272007020100000) .
3. Remove the timing chains and tensioners «(Refer to ENGINE/VALVE TIMING/TIMING BELT/CHAIN AND SPROCKETS - REMOVAL)»(ref-247616-S34754275192007020100000) .
4. Remove the four bolts, primary timing chain tensioner and the oil pump.

1. Disconnect negative cable from battery.
2. Remove resonator assembly and air inlet hose.
3. Disconnect throttle and speed control cables.
4. Disconnect electrical connectors for the following components: Refer to «FUEL SYSTEM»(ref-247623) for component locations. Manifold Absolute Pressure (MAP) Sensor Intake Air Temperature (IAT) Sensor Throttle Position (TPS) Sensor Coolant Temperature (CTS) Sensor Idle Air Control (IAC) Motor
5. Disconnect vapor purge hose, brake booster hose, speed control servo hose, positive crankcase ventilation (PCV) hose.
6. Disconnect generator electrical connections.
7. Disconnect air conditioning compressor electrical connections.
8. Disconnect left and right radio suppressor straps.
9. Disconnect and remove ignition coil towers.
10. Remove top oil dipstick tube retaining bolt and ground strap.
11. Bleed fuel system «(Refer to FUEL SYSTEM/FUEL DELIVERY - STANDARD PROCEDURE)»(ref-247623-S20291972152007020100000) .
12. Remove fuel rail.
13. Remove throttle body assembly and mounting bracket.
14. Drain cooling system below coolant temperature level «(Refer to COOLING - STANDARD PROCEDURE)»(ref-247624-S05505992522007020100000) .
15. Remove the heater hoses from the engine front cover and the heater core.
16. Unclip and remove heater hoses and tubes from intake manifold.
17. Remove coolant temperature sensor «(Refer to COOLING/ENGINE/ENGINE COOLANT TEMP SENSOR - REMOVAL)»(ref-247624-S02939524952007020100000) .
18. Remove intake manifold retaining fasteners in reverse order of tightening sequence.
19. Remove intake manifold.

Scheme 97

1. Install intake manifold gaskets.
2. Install intake manifold.
3. Install intake manifold retaining bolts and tighten in sequence shown in illustration to 12 N.m (105 in. lbs.).
4. Install left and right radio suppressor straps.
5. Install throttle body assembly.
6. Connect throttle cable and speed control cable to throttle body.
7. Install fuel rail.
8. Install ignition coil towers.
9. Position and install heater hoses and tubes onto intake manifold.
10. Install the heater hoses to the heater core and engine front cover.
11. Connect electrical connectors for the following components: Manifold Absolute Pressure (MAP) Sensor Intake Air Temperature (IAT) Sensor Throttle Position (TPS) Sensor Coolant Temperature (CTS) Sensor Idle Air Control (IAC) Motor Ignition coil towers Fuel injectors
12. Install top oil dipstick tube retaining bolt and ground strap.
13. Connect generator electrical connections.
14. Connect Vapor purge hose, Brake booster hose, Speed control servo hose, Positive crankcase ventilation (PCV) hose.
15. Fill cooling system «(Refer to COOLING - STANDARD PROCEDURE)»(ref-247624-S05505992522007020100000) .
16. Install resonator assembly and air inlet hose.
17. Connect negative cable to battery.

Scheme 98

The exhaust manifolds (1 and 2) are log style with a patented flow enhancing design to maximize performance. The exhaust manifolds are made of high silicon molybdenum cast iron. A perforated core graphite exhaust manifold gasket is used to improve sealing to the cylinder head.

Scheme 99

The exhaust manifolds are covered by a three layer laminated heat shield ( 1 and 3) for thermal protection and noise reduction. The heat shields (1 and 3) are fastened with a torque prevailing nut that is backed off slightly to allow for the thermal expansion of the exhaust manifold.

Scheme 100

Note. The balance shaft and gear are serviced as an assembly. Do not attempt to remove the gear from the balance shaft.

1. Coat counterbalance shaft bearing journals with clean engine oil. NOTE: The balance shaft is heavy, and care should be used when installing shaft, so bearings are not damaged.
2. Using Special Tool 8641 Counterbalance shaft remover/installer tool, carefully install counterbalance shaft into engine.
3. Install Counterbalance shaft thrust plate retaining bolt finger tight. Do not tighten bolt at this time.
4. Position the right side of the thrust plate with the right chain guide bolt, install bolt finger tight.
5. Torque the thrust plate retaining bolt to 28 N.m (250 in. lbs.).
6. Remove the chain guide bolt so that guide can be installed.

1. Remove the primary and secondary timing chains and sprockets. Refer to «TIMING CHAIN & SPROCKETS»(ref-247616-S06155837472007020100000) . NOTE: To remove the idler shaft, it is necessary to tap threads into the shaft, to install the removal tool.
2. Using a 12 mm X 1.75 tap, cut threads in the idler shaft center bore.
3. Cover the radiator core with a suitable cover. CAUTION: Use care when removing the idler shaft, Do not strike the radiator cooling fins with the slide hammer.
4. Using Special Tool 8517 Slide Hammer, remove the idler shaft.

1. Thoroughly clean the idler shaft bore.
2. Position the idler shaft in the bore. NOTE: The two lubrication holes in the idler shaft do not require any special alignment. NOTE: Before using the retaining bolt to install the idler shaft, coat the threads and the pilot on the idler shaft, with clean engine oil.
3. Using the primary idler sprocket retaining bolt and washer, carefully draw the idler shaft into the bore until fully seated.
4. Coat the idler shaft with clean engine oil.
5. Install the timing chains and sprockets. Refer to «TIMING CHAIN & SPROCKETS»(ref-247616-S06155837472007020100000) .

Scheme 101

Scheme 102

1. Disconnect the battery negative cable.
2. Drain cooling system «(Refer to COOLING - STANDARD PROCEDURE)»(ref-247624-S05505992522007020100000) .
3. Remove electric cooling fan and fan shroud assembly.
4. Remove radiator fan «(Refer to COOLING/ENGINE/RADIATOR FAN - REMOVAL)»(ref-247624-S28211438172007020100000) .
5. Disconnect both heater hoses at timing cover.
6. Disconnect lower radiator hose at engine.
7. Remove accessory drive belt tensioner assembly (1).
8. Remove crankshaft damper «(Refer to ENGINE/ENGINE BLOCK/VIBRATION DAMPER - REMOVAL)»(ref-247616-S25337929552007020100000) .
9. Remove the generator «(Refer to ELECTRICAL/CHARGING/GENERATOR - REMOVAL)»(ref-247626-S19200388042007020100000) .
10. Remove A/C compressor «(Refer to HEATING & AIR CONDITIONING/PLUMBING/A/C COMPRESSOR - REMOVAL)»(ref-247627-S37636794062007020100000) . CAUTION: The 3.7L engine uses an anaerobic sealer instead of a gasket to seal the front cover to the engine block, from the factory. For service, Mopar(R) Grey Engine RTV sealant must be substituted. NOTE: It is not necessary to remove the water pump for timing cover removal.
11. Remove the bolts holding the timing cover to engine block.
12. Remove the timing cover.

Scheme 103

Scheme 104

1. Clean timing chain cover and block surface using rubbing alcohol. CAUTION: The 3.7L uses a special anaerobic sealer instead of a gasket to seal the timing cover to the engine block, from the factory. For service repairs, Mopar(R) Engine RTV must be used as a substitute.
2. Inspect the water passage o-rings (2) for any damage, and replace as necessary.
3. Apply Mopar(R) Engine RTV sealer to front cover as shown in illustration (3) using a 3 to 4 mm thick bead.
4. Install cover. Tighten fasteners in sequence as shown in illustration to 58 N.m (43 ft. lbs.).
5. Install crankshaft damper «(Refer to ENGINE/ENGINE BLOCK/VIBRATION DAMPER - INSTALLATION)»(ref-247616-S34369034152007020100000) .
6. Install the A/C compressor «(Refer to HEATING & AIR CONDITIONING/PLUMBING/A/C COMPRESSOR - INSTALLATION)»(ref-247627-S15861015232007020100000) .
7. Install the generator «(Refer to ELECTRICAL/CHARGING/GENERATOR - INSTALLATION)»(ref-247626-S41383718202007020100000) .
8. Install accessory drive belt tensioner «(Refer to COOLING/ACCESSORY DRIVE/BELT TENSIONERS - INSTALLATION)»(ref-247624-S05275506182007020100000) .
9. Install radiator upper and lower hoses.
10. Install both heater hoses.
11. Install radiator fan «(Refer to COOLING/ENGINE/RADIATOR FAN - INSTALLATION)»(ref-247624-S29957863532007020100000) .
12. Fill cooling system «(Refer to COOLING - STANDARD PROCEDURE)»(ref-247624-S05505992522007020100000) .
13. Connect the battery negative cable.

Scheme 105

Scheme 106

Scheme 107

Scheme 108

Scheme 109

1. Disconnect negative cable from battery.
2. Drain cooling system «(Refer to COOLING - STANDARD PROCEDURE)»(ref-247624-S05505992522007020100000) .
3. Remove right and left cylinder head covers «(Refer to ENGINE/CYLINDER HEAD/CYLINDER HEAD COVER(S) - REMOVAL)»(ref-247616-S02086164582007020100000) .
4. Remove radiator fan «(Refer to COOLING/ENGINE/RADIATOR FAN - REMOVAL)»(ref-247624-S28211438172007020100000) .
5. Rotate engine until timing mark (2) on crankshaft damper aligns with TDC mark on timing chain cover (1).
6. Make sure the camshaft sprocket "V6" marks (1) are at the 12 o'clock position (No. 1 TDC exhaust stroke).
7. Remove power steering pump «(Refer to STEERING/PUMP - REMOVAL)»(ref-247608-S33728394522007020100000) . 1 - RIGHT CYLINDER HEAD ACCESS PLUG 2 - LEFT CYLINDER HEAD ACCESS PLUG
8. Remove access plugs (1 and 2) from left and right cylinder heads for access to chain guide fasteners.
9. Remove the oil fill housing to gain access to the right side tensioner arm fastener.
10. Remove crankshaft damper «(Refer to ENGINE/ENGINE BLOCK/VIBRATION DAMPER - REMOVAL)»(ref-247616-S25337929552007020100000) and timing chain cover «(Refer to ENGINE/VALVE TIMING/TIMING BELT / CHAIN COVER(S) - REMOVAL)»(ref-247616-S29943246272007020100000) .
11. Collapse and pin primary chain tensioner. CAUTION: Plate behind left secondary chain tensioner could fall into oil pan. Therefore, cover pan opening.
12. Remove secondary chain tensioners. 1 - CYLINDER HEAD 2 - CAMSHAFT POSITION SENSOR 3 - SCREW
13. Remove camshaft position sensor (2). 1 - Camshaft hole 2 - Special Tool 8428 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 target wheel could cause a vehicle no start condition. CAUTION: Do not forcefully rotate the camshafts or crankshaft independently of each other. Damaging intake valve to piston contact will occur. Ensure negative battery cable is disconnected to guard against accidental starter engagement.
14. Remove left and right camshaft sprocket bolts.
15. While holding the left camshaft steel tube with Special Tool 8428 Camshaft Wrench (2) , remove the left camshaft sprocket. Slowly rotate the camshaft approximately 5 degrees clockwise to a neutral position.
16. While holding the right camshaft steel tube with Special Tool 8428 Camshaft Wrench (2), remove the right camshaft sprocket.
17. Remove idler sprocket assembly bolt.
18. Slide the idler sprocket assembly and crank sprocket forward simultaneously to remove the primary and secondary chains.
19. Remove both pivoting tensioner arms and chain guides.
20. Remove primary chain tensioner.