REMOVAL AND INSTALLATION



Pre-removal operation
  • Engine Room Under Cover Front A, B and Engine Room Side Cover (RH) Removal (Refer to GROUP 51 - Under Cover ).
  • Engine Coolant Draining (Refer to GROUP 14 - On-vehicle Service, Engine Coolant Replacement ).
  • Engine Oil Draining (Refer to GROUP 12 - On-vehicle Service, Engine Oil Replacement ).
  • Cylinder Head Cover Assembly Removal (Refer to ).
  • Crankshaft Pulley Removal (Refer to ).
  • Engine Oil Pan Removal (Refer to ).
  • Water Pump Pulley Removal (Refer to GROUP 14 - Water Pump ).

Post-installation operation
  • Water Pump Pulley Installation (Refer to GROUP 14 - Water Pump ).
  • Engine Oil Pan Installation (Refer to ).
  • Crankshaft Pulley Installation (Refer to ).
  • Cylinder Head Cover Assembly Installation (Refer to ).
  • Alternator and Others Belt Tension Check and Adjustment (Refer to ).
  • Engine Oil Refilling (Refer to GROUP 12 - On-vehicle Service, Engine Oil Replacement ).
  • Engine Coolant Refilling (Refer to GROUP 14 - On-vehicle Service, Engine Coolant Replacement ).
  • Engine Room Under Cover Front A, B and Engine Room Side Cover (RH) Installation (Refer to GROUP 51 - Under Cover ).





Removal steps


1.
Earth cable connection
<<A>>

·
A/C compressor and clutch assembly.
<<B>>

·
Engine and transmission assembly supporting


·
Engine mounting insulator (Refer to GROUP 32 - Engine Mounting )


2.
Alternator brace

>>E<<
3.
Crankshaft front oil seal

>>D<<
4.
Water pump assembly

>>D<<
5.
O-ring

>>C<<
6.
Timing chain case assembly

>>C<<
7.
O-ring

>>B<<
8.
Timing chain tensioner cover
<<C>>
>>A<<
9.
Timing chain tensioner

>>A<<
10.
Tensioner lever assembly

>>A<<
11.
Timing chain guide

>>A<<
12.
Timing chain

REMOVAL SERVICE POINTS



<<A>> A/C COMPRESSOR AND CLUTCH ASSEMBLY REMOVAL


1.Remove the A/C compressor and clutch assembly together with the hose from the bracket.
2.Tie the removed A/C compressor and clutch assembly with a string at a position where it will not interfere with the removal and installation of timing chain case assembly.

<<B>> ENGINE AND TRANSMISSION ASSEMBLY HOLDING


Install a special tool for holding the engine and transmission assembly.


1.<When special tool engine hanger (MB991928) is used>
(1) Assemble special tool engine hanger (MB991928). (Set the following parts on the base hanger.)

  • Slide bracket (HI)
  • Foot x 4 (standard) (MB991932)
  • Joint x 2 (90) (MB991930)
(2) Set the foot of the special tool as shown in the figure.
note Slide the slide bracket (HI) to adjust the engine hanger balance.
(3) Install special tool engine hanger (MB991527) and special tool engine hanger balancer (MB991454) to the engine hanger, and set it to special tool (MB991928) to support the engine and transmission assembly.


2.<When special tool engine hanger (MB991895) is used>
(1) Set the foot of special tool engine hanger (MB991895) as shown in the figure.
note Slide the foot to adjust the engine hanger balance.
(2) Install special tool (MB991527) and special tool (MB991454) to the engine hanger, and set it to special tool (MB991895) to support the engine and transmission assembly.

<<C>> TIMING CHAIN TENSIONER REMOVAL



1.Set special tool crankshaft adapter (MB992000) to the crankshaft, and install the crankshaft pulley centre bolt and washer.


2.
caution Never turn the crankshaft anti-clockwise.
Turn the crankshaft clockwise, and align the timing marks of the camshaft sprocket (2 conceive areas in front of the camshaft sprocket) and the crankshaft sprocket. Then set No.1 cylinder to the top dead centre of compression.

3.While holding the inlet camshaft hexagonal area with a wrench or a similar tool, slightly turn the exhaust camshaft clockwise to tighten the timing chain at the timing chain tensioner side and shorten the plunger of the timing chain tensioner.

4.With the plunger of the tensioner shortened, insert a pin (3 mm or less in diameter) or a similar tool to the hole shown in the illustration of the timing chain tensioner.
5.
caution Do not turn the crankshaft after removing the timing chain tensioner.
Remove the timing chain tensioner.

INSTALLATION SERVICE POINTS



>>A<< TIMING CHAIN/TIMING CHAIN GUIDE/TENSIONER LEVER ASSEMBLY/TIMING CHAIN TENSIONER INSTALLATION



1.Set special tool crankshaft adapter (MB992000) to the crankshaft, and install the crankshaft pulley centre bolt and washer.


2.
caution Never turn the crankshaft anti-clockwise.
Turn the camshaft and crankshaft clockwise, and align the timing marks of the camshaft sprocket (2 conceive areas in front of the camshaft sprocket), the V.V.T. sprocket assembly (the groove of V.V.T. sprocket assembly side face) and the crankshaft sprocket. Then set No.1 cylinder to the top dead centre of compression.


3.Locate the marked link plate (blue-coloured area) of the timing chain as shown in the illustration of each sprocket, and install the timing chain.


4.Install the timing chain guide, the tensioner lever assembly, and the timing chain tensioner.
note When the plunger of the timing chain tensioner is stretched, remove the pin or the similar tool. While pressing the cam in the lower area of the timing chain tensioner, press and shorten the plunger to keep the status with the pin or the similar tool.
5.After installing the timing chain tensioner, confirm that the timing marks of each sprocket are aligned with the cylinder No. 1 to the top dead centre of compression, and the marked link plate (blue-coloured area) of the timing chain is aligned with the specified position of each sprocket. Then pull out the pin or a similar tool of the timing chain tensioner, and apply tension to the timing chain.
6.Remove special tool crankshaft adapter (MB992000).

>>B<< TIMING CHAIN TENSIONER COVER INSTALLATION


1.Remove the sealant from the installation face of the timing chain tensioner cover and the timing chain case assembly.

2.Apply a bead of the specified sealant to the mating surface of the timing chain case assembly. Then, install the timing chain tensioner cover to the timing chain case assembly within 3 minutes.
Specified sealant: LOCTITE 5971, 5970, 5900, THREEBOND TB1217G or exact equivalent

>>C<< O-RING/TIMING CHAIN CASE ASSEMBLY INSTALLATION


1.Remove the sealant from the timing chain case assembly and the installation face of the timing chain case assembly on the cylinder block and the cylinder head.

2.Securely fit the O-ring in the groove of timing chain case assembly without causing any torsion and damage.

3.Apply a bead of the sealant to the cylinder block and cylinder head mating surface of the timing chain case assembly as shown.
Specified sealant: LOCTITE 5971, 5970, 5900, THREEBOND TB1217G or exact equivalent
4.
caution
  • If the sealant contacts any other part during installation of the timing chain case assembly, apply sealant again before installing the timing chain case assembly.
  • After the installation, until a sufficient period of time (one hour or more) elapses, do not apply the oil or water to the sealant application area or start the engine.
Taking care not to scrub the specified sealant applied on the timing chain case assembly with the cylinder block etc., install the timing chain case assembly to the cylinder block within 5 minutes after applying the specified sealant.

5.Install the timing chain case assembly mounting bolts to the position shown, and tighten the bolts to the specified torque.
Bolt (symbol)
Diameter × length mm
Tightening torque N·m
A
6 × 25
8.4 ± 0.6
B
6 × 30
8.4 ± 0.6
C
6 × 45
8.4 ± 0.6
D
10 × 50
40 ± 2
E
10 × 90
40 ± 2

>>D<< O-RING/WATER PUMP ASSEMBLY INSTALLATION



1.Securely fit the O-ring in the groove of water pump assembly without causing any torsion and damage.
2.Install the water pump assembly to the timing chain case assembly.
note The water pump assembly mounting bolts are also used for the timing chain case assembly. Thus install the water pump assembly together with the timing chain case assembly, or else immediately after installing the timing chain case assembly.

>>E<< CRANKSHAFT FRONT OIL SEAL INSTALLATION



1.Apply a small amount of engine oil to the outer circumference of special tool crankshaft front oil seal guide (MB991993) and install it to the crankshaft.
2.Apply a small amount of engine oil to the entire inner circumference of the oil seal lip.
3.
caution Install the crankshaft front oil seal not to damage the crankshaft front oil seal.
Using special tool differential oil seal installer (MB990699), drive the oil seal so that it is flush with the timing chain case assembly.