Timing Chain: Removal

Fig 1: Removing Drain Plug

Courtesy of NISSAN MOTOR CO., U.S.A.

Be careful not to spill coolant on drive belts.

• Power steering pump drive belt
• Alternator drive belt

• EVAP canister
• Brake power booster

1. Remove any parts that make it difficult to remove RH mount.
2. Support cylinder block bottom surface with a transmission jack.
   CAUTION:

   • When positioning jack, use a wooden block to avoid damage to the oil pan mounting surface.
3. Separate and remove engine mounting bracket and engine mounting.

1. Turn the crankshaft pulley clockwise, and align the pointer to the timing mark on the pulley.
   Fig 7: Aligning Pointer To Timing Mark On Pulley

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2. Make sure the camshaft sprocket mating mark is in the position shown in the figure.
   • If the mating mark is not in position, turn the crankshaft pulley once more and position it.
   Fig 8: Identifying Camshaft Sprocket Mating Mark

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1. Secure crankshaft counterweight with the handle of a hammer, and loosen crankshaft pulley bolt.
   CAUTION: Take care to prevent foreign material from entering the engine.
   Fig 9: Removing Crankshaft Pulley

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2. Remove crankshaft pulley using crankshaft pulley puller.
   CAUTION:

   • Hook tab onto back of crankshaft pulley only.
   • Do not remove crankshaft pulley bolt. Fully loosen, and then use it as support point.

1. To ease front cover removal, pull oil pump drive spacer out through front oil seal.
   • Pull it straight out using long nose pliers or two flat-bladed screwdrivers.
     CAUTION: Be careful not to damage side of oil pump drive spacer and front oil seal lip.
2. Remove power steering pump adjusting bar.
   Fig 11: Pulling Oil Pump Drive Spacer Out Through Front Oil Seal

   Courtesy of NISSAN MOTOR CO., U.S.A.
3. Remove front cover carefully.
   • Remove mounting bolts A - E shown in figure.
     NOTE: Bolts C and E have been removed in step b.
     CAUTION:

     • When removing, be careful not to damage or bend front end of cylinder head gasket. Also after peeling off contact surface between front cover and gasket, their surfaces shall be smooth.
     • If cylinder head gasket is damaged, replace it with a new one.
   Fig 12: Removing Front Cover

   Courtesy of NISSAN MOTOR CO., U.S.A.
4. Remove O-rings from front cover and cylinder block.

• Heat them sufficiently with industrial dryer, then pull them out using locking pliers.

Fig 13: Pulling Dowel Pins For Front Cover Out Of Cylinder Block

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• Insert a flat-bladed screwdriver in notch on oil seal mounting point, and pry out oil seal.

Fig 14: Removing Front Oil Seal

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Fig 15: Setting Intake Camshaft Sprocket To Most Advanced Position

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1. Using a wrench, hold the hexagonal part so that the intake camshaft does not move.
   Fig 16: Holding Hexagonal Part Of Intake Camshaft

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2. Using an air gun, apply air pressure to the intake valve timing control solenoid valve advance side oil passage on the top surface of the No. 1 camshaft bracket.
   1. Compression pressure :300 kPa (3.06 kg/cm2, 43.5 psi) or more 
   • Keep applying air pressure until substep d is completed.
   CAUTION:

   • Be careful not to damage the oil passage from interference of the air gun tip.
   • Thoroughly wipe off the oil before applying air pressure. When applying air pressure, cover around the air gun using a rag. Wear protective glasses if necessary.
   Fig 17: Applying Air Pressure To advance Side Oil Passage On Top Surface Of No. 1 Camshaft Bracket

   Courtesy of NISSAN MOTOR CO., U.S.A.
3. Slowly turn the intake camshaft in direction A (counterclockwise: intake manifold side).
   CAUTION: Be careful not to dislocate the camshaft retaining spanner.
   Fig 18: Turning Intake Camshaft Counterclockwise (A) & Clockwise (B)

   Courtesy of NISSAN MOTOR CO., U.S.A.
4. During the above step, an operating click (a sound indicating internal lock pin is disengaged) is heard from the inside of the intake camshaft sprocket. After hearing it, slowly turn intake camshaft in direction B (clockwise: exhaust manifold side), and set to most advanced position.
   • Perform while applying air pressure.
   • When the vane rotates solely against sprocket, lock pin is disengaged even if operating click is not heard.
   • If the lock pin is not disengaged, giggle the camshaft with a wrench.
   • If the lock pin is not disengaged with the above step, tap the intake camshaft in front with a plastic hammer.
5. The following status indicates that the most advanced position is achieved: vane starts rotating on it own, then the sprocket also starts rotating when camshaft is turned. When above status is achieved, this step is complete.
   • The most advanced position is confirmed when the stopper pin groove and lock pin breathing groove are aligned.
   Fig 19: Aligning Stopper Pin Groove And Lock Pin Breathing Groove

   Courtesy of NISSAN MOTOR CO., U.S.A.
6. Stop the air and insert stopper pin [approximately 3 mm (0.12 in) dia., length of inserted part is approximately 15 mm (0.59 in)] into pinhole on camshaft sprocket to fix the most advanced position.
   Fig 20: Inserting Stopper Pin

   Courtesy of NISSAN MOTOR CO., U.S.A.
   CAUTION: Load (spring reaction force) is not applied to stopper pin. Pin is easily detached. Therefore, secure it with vinyl tape to prevent detachment.
   NOTE: In the figure, an Allen wrench [a/f 2.5 mm (0.098 in), short part: approximately 20 mm (0.79 in), long part: approximately 50 mm (1.97 in)] is used for stopper pin as an example.

• Remove in the following order.

1. Press the plate down and release the stopper tab.
2. Insert the plunger into the tensioner body until it stops.
3. Secure the plate by passing the stopper pin (such as a hard wire) through the plate hole and body hole. (Plunger is also secured.)
4. Remove the mounting bolts and remove the chain tensioner.

Fig 21: Removing Chain Tensioner

Courtesy of NISSAN MOTOR CO., U.S.A.