Removal and Installation: Installation
- Install chain tensioners (secondary) to cylinder head as follows if removed. Refer to INSTALLATION
.
- Install chain tensioners (secondary) with stopper pin attached and new O-ring.
- Install camshaft brackets (No. 1). Refer to INSTALLATION .
- Install rear timing chain case as follows:
- Install O-rings onto cylinder block.
- Install O-rings to cylinder head.
- Apply liquid gasket to rear timing chain case back side as shown in the figure.
Use Genuine RTV Silicone Sealant or equivalent. Refer to RECOMMENDED CHEMICAL PRODUCTS AND SEALANTS .
- Align rear timing chain case and water pump assembly with dowel pins (RH and LH) on cylinder block and install rear timing chain case.
- Make sure O-rings stay in place during installation to cylinder block and cylinder head.
- Tighten mounting bolts in the numerical order as shown in the figure.
- There are two type mounting bolts. Refer to the following for locating bolts:
Bolt length: Bolt position
20 mm (0.79 in): 1,2,3,6,7,8,9,10
16 mm (0.63 in): Except the above
: 11.7 - 13.7 N.m (1.2 - 1.4 kg-m, 9 - 10 ft-lb)
- There are two type mounting bolts. Refer to the following for locating bolts:
- After all bolts are tightened, retighten them to the specified in numerical order as shown in the figure.
- If liquid gasket protrudes, wipe it off immediately.
- After installing rear timing chain case, check surface height difference between following parts on upper oil pan mounting surface.
Standard
Rear timing chain case to cylinder block:
-0.24 to 0.14 mm (-0.0094 to 0.0055 in)
- If not within standard, repeat the installation procedure.
- Install chain tension guide.
- Position crankshaft so No. 1 piston is set at TDC on the compression stroke.
- Make sure that dowel pin hole, dowel pin and crankshaft key are located as shown in the figure.NOTE: Though camshaft does not stop at the position as shown in the figure, for the placement of cam nose, it is generally accepted camshaft is placed for the same direction of the figure.
Camshaft dowel pin hole (intake side): At cylinder head upper face side in each bank.
Camshaft dowel pin (exhaust side): At cylinder head upper face side in each bank.
Crankshaft key: At cylinder head side of RH bank.
CAUTION: Hole on small dia. side must be used for intake side dowel pin hole. Do not misidentify (ignore big dia. side).
- Make sure that dowel pin hole, dowel pin and crankshaft key are located as shown in the figure.
- Install timing chains (secondary) and camshaft sprockets as follows:CAUTION: Mating marks between timing chain and sprockets slip easily. Confirm ail mating mark positions repeatedly during the installation process.
- Push plunger of chain tensioner (secondary) and keep it pressed in with stopper pin.
- Install timing chains (secondary) and camshaft sprockets.
- Align the mating marks on timing chain (secondary) (gold link) with the ones on camshaft sprockets (INT and EXH) (punched), and install them.NOTE:
- Mating marks for intake camshaft sprocket are on the back side of camshaft sprocket (secondary).
- There are two types of mating marks, circle and oval types. They should be used for the RH and LH banks, respectively.
RH bank: Use circle type.
LH bank: Use oval type.
- Align dowel pin and pin hole on camshafts with the groove and dowel pin on sprockets, and install them.
- On the intake side, align pin hole on the small diameter side of the camshaft front end with dowel pin on the back side of camshaft sprocket, and install them.
- On the exhaust side, align dowel pin on camshaft front end with pin groove on camshaft sprocket, and install them.
- Mounting bolts for camshaft sprockets must be tightened in the next step. Tightening them by hand is enough to prevent the dislocation of dowel pins.
- It may be difficult to visually check the dislocation of mating marks during and after installation. To make the matching easier, make a mating mark on the top of sprocket teeth and its extended line in advance with paint.
- Align the mating marks on timing chain (secondary) (gold link) with the ones on camshaft sprockets (INT and EXH) (punched), and install them.
- After confirming the mating marks are aligned, tighten camshaft sprocket mounting bolts.
- Secure camshaft using wrench at the hexagonal portion to tighten mounting bolts.
- Pull stopper pins out from timing chain tensioners (secondary).
- Install timing chain (primary) as follows:
- Install crankshaft sprocket.
- Make sure the mating marks on crankshaft sprocket face the front of engine.
- Install timing chain (primary).
- Install timing chain (primary) so the mating mark (punched) on camshaft sprocket is aligned with the yellow link on timing chain, while the mating mark (notched) on crankshaft sprocket is aligned with the orange one on timing chain, as shown in the figure.
- When it is difficult to align mating marks of timing chain (primary) with each sprocket, gradually turn camshaft using wrench on the hexagonal portion to align it with the mating marks.
- During alignment, be careful to prevent dislocation of mating mark alignments of timing chains (secondary).
- Install crankshaft sprocket.
- Install internal chain guide and slack guide.
CAUTION: Do not overtighten slack guide mounting bolts. It is normal for a gap to exist under the bolt seats when mounting bolts are tightened to specification.
- Install chain tensioner for slack guide.
- When installing chain tensioner, push in plunger and keep it pressed in with stopper pin.
- Remove any dirt and foreign materials completely from the back and the mounting surfaces of chain tensioner.
- After installation, pull out stopper pin by pressing slack guide.
- Reconfirm that the mating marks on sprockets and timing chain have not slipped out of alignment.
- Install new O-rings on rear timing chain case.
- Install front oil seal on front timing chain case. Apply new engine oil to the oil seal edges.
- Install it so that each seal lip is oriented as shown in figure.
- Using suitable drift, press-fit oil seal until it becomes flush with timing chain case end face.
- Make sure the garter spring is in position and seal lip is not inverted.
- Install water pump cover and chain tensioner cover to front timing chain case.
- Apply a continuous bead of liquid gasket to front timing chain case as shown in the figure.
Use Genuine RTV Silicone Sealant or equivalent. Refer to RECOMMENDED CHEMICAL PRODUCTS AND SEALANTS .
- Apply a continuous bead of liquid gasket to front timing chain case as shown in the figure.
- Install front timing chain case as follows:
- Apply liquid gasket to front timing chain case back side as shown in the figure.
Use Genuine RTV Silicone Sealant or equivalent. Refer to RECOMMENDED CHEMICAL PRODUCTS AND SEALANTS .
- Install dowel pin on rear timing chain case into dowel pin hole on front timing chain case.
- Tighten bolts to the specified torque in order shown in the figure.
- There are two type mounting bolts. Refer to the following for locating bolts:
8 mm (0.31 in) dia. bolts: 1, 2
: 25.5 - 31.3 N.m (2.6 - 3.2 kg-m, 19 - 23 ft-lb)
6 mm (0.24 in) dia. bolts: Except the above
: 11.7-13.7 N.m (1.2 -1.4 kg-m, 9 - 10 ft-lb)
- There are two type mounting bolts. Refer to the following for locating bolts:
- After all bolts tightening, retighten them to specified torque in numerical order shown in figure.
- After installing front timing chain case, check surface height difference between the following parts on the oil pan mounting surface.
Standard
Front timing chain case to rear timing chain case:
-0.14 to 0.14 mm (-0.005 to 0.0055 in)
- If not within standard, repeat the installation procedure.
- Apply liquid gasket to front timing chain case back side as shown in the figure.
- Install RH and LH intake valve timing control covers as follows:
- Install seal rings in shaft grooves.
- Apply liquid gasket to intake valve timing control covers.
Use Genuine RTV Silicone Sealant or equivalent. Refer to RECOMMENDED CHEMICAL PRODUCTS AND SEALANTS .
- Install collared O-ring in front timing chain case oil hole (LH and RH sides).
- Being careful not to move seal ring from the installation groove, align dowel pins on front timing chain case with holes to install intake valve timing control covers.
- Tighten bolts in the numerical order as shown in the figure.
- Install RH and LH rocker covers. Refer to ROCKER COVER .
- Install crankshaft pulley as follows:
- install crankshaft pulley, taking care not to damage front oil seal.
- When press-fitting crankshaft pulley with plastic hammer, tap on its center portion (not circumference).
- Fix crankshaft using hammer shaft or equivalent tool.
- Tighten crankshaft pulley bolt.
: 39.2 - 49.0 N.m (4.0 - 5.0 kg-m, 29 - 36 ft-lb)
- Put a paint mark on crankshaft pulley aligning with angle mark on crankshaft pulley bolt. Then, further retighten bolt by 60 to 65 degrees [Target: 60 degrees (equivalent to one graduation)].
- install crankshaft pulley, taking care not to damage front oil seal.
- Rotate crankshaft pulley in normal direction (clockwise when viewed from engine front) to confirm it turns smoothly.
- Install in the reverse order of removal after this step.NOTE: If hydraulic pressure inside chain tensioner drops after removal/installation, slack in guide may generate a pounding noise during and just after engine start. However, this does not indicate an unusualness. Noise will stop after hydraulic pressure rises.