TIMING CHAIN ASSEMBLY

id011000505600

Special Service Tool (SST)

49 E011 1A0
 
Ring gear brake set
49 G028 205
 
Oil seal installer
—

Caution
•  If the camshaft is rotated with the timing chain removed and the piston at the top dead center position, the valve may contact the piston and the engine could be damaged. When rotating the camshaft with the timing chain removed, rotate it after lowering the piston from the top dead center position.
•  When rotating the camshaft using a wrench on the cast hexagon, the wrench may contact the rocker arm and damage the rocker arm. To prevent damage to the rocker arm when holding the camshaft on the cast hexagon, use a wrench on the rear side of the engine as shown in the figure to secure a clearance between the cam.
am3uuw00008968
•  When installing the oil pan, refer to the Oil Pan Installation Note and apply the silicone sealant correctly. If the silicone sealant application position is incorrect or there is any break in the application track, engine oil leakage will occur due to a poor seal.
Note
•  Width at the cast hexagon of the camshaft is 22—24 mm {0.87—0.94 in}.
bpe5ue00000032

1.  Assemble in the order indicated in the table.

bp26ze00000018

1
Key
2
Oil pump drive sprocket
3
Oil pump chain guide
4
Oil pump driven sprocket
(See Oil Pump Chain Assembly Note.)
5
Oil pump chain
(See Oil Pump Chain Assembly Note.)
6
Balancer shaft sprocket
(See Oil Pump Chain Assembly Note.)
7
Oil pump chain tensioner
(See Oil Pump Chain Assembly Note.)
8
Crankshaft sprocket
9
Chain guide (No.2)
10
Timing chain
(See Timing Chain Assembly Note.)
11
Chain guide (No.1)
(See Timing Chain Assembly Note.)
12
Tensioner arm
(See Timing Chain Assembly Note.)
13
Chain tensioner
(See Timing Chain Assembly Note.)
14
Engine front cover
(See Engine Front Cover Assembly Note.)
15
Oil level sensor
16
Oil pan
(See Oil Pan Assembly Note.)
17
Front oil seal
(See Front Oil Seal Assembly Note.)
18
Crankshaft pulley
19
Crankshaft pulley lock bolt
(See Crankshaft Pulley Lock Bolt Assembly Note.)
20
Spark plug
21
Oil shower pipe
(See Oil Shower Pipe Assembly Note.)
22
Cylinder head cover
(See Cylinder Head Cover Assembly Note.)
23
Dipstick


Oil Pump Chain Assembly Note

1.  Verify that the key and knock pin are aligned to the positions shown in the figure.

bp25ue00000056

•  If they are not in the positions shown in the figure, rotate the crankshaft and balancer shaft (No.1) to set cylinder No.1 to top dead center (TDC).

2.  Temporarily assemble the oil pump driven sprocket.

3.  Temporarily tighten the oil pump driven sprocket installation bolt.

4.  Align the oil pump chain alignment mark with the balancer shaft sprocket alignment mark.

bp25ue00000057

5.  Install the oil pump chain and balancer shaft sprocket as a single unit while aligning the alignment marks on each sprocket and oil pump chain as shown in the figure.

bp25ue00000058

6.  Temporarily tighten the balancer shaft sprocket installation bolt.

7.  Install the oil pump chain tensioner.

Caution
•  At this stage, do not remove the wire or paper clip installed to the oil pump chain tensioner.

8.  Hold the crankshaft using the SST.

bp26ze00000015

9.  Tighten the oil pump driven sprocket installation bolt.

Tightening torque
Silver bolt: 20—30 N·m {2.1—3.0 kgf·m, 15—22 ft·lbf}
Black bolt: 26—36 N·m {2.7—3.6 kgf·m, 20—26 ft·lbf}

10.  Tighten the balancer shaft sprocket installation bolt.

Tightening torque
52—58 N·m {5.4—5.9 kgf·m, 39—42 ft·lbf}

11.  Remove the wire or paper clip installed to the oil pump chain tensioner and apply tension to the oil pump chain.

•  If a new oil pump chain tensioner is used, remove the installed stopper.


Timing Chain Assembly Note

1.  Verify that the timing marks and the key are aligned to the position shown in the figure.

bp25ue00000060

Note
•  The timing mark of SKYACTIV-G 2.5T is not parallel with the upper surface of the cylinder head.
•  If they are not in the position shown in the figure, rotate the camshaft and crankshaft to set the cylinder No.1 top dead center (TDC).

2.  Install the timing chain while aligning the marks on each sprocket and the timing chain as shown in the figure.

am6xuw00013286

Note
•  A new timing chain has one alignment mark (yellow) on the timing chain. The position of the alignment mark differs depending on the combination of the crankshaft sprocket and the timing chain.
•  When installing the timing chain, install it at the position of the alignment mark indicating the combination of any type A, B, or C.

3.  Install the tensioner arm.

4.  Install the chain tensioner.

5.  After installing the chain tensioner, remove the installed wire or paper clip, and then apply tension to the timing chain. (Chain tensioner (type A))

•  If a new chain tensioner is used, remove the installed stopper.
am3uuw00008861

6.  After installing the timing chain tensioner, remove the installed rod, and then apply tension to the timing chain. (Chain tensioner (type B))

•  If a new chain tensioner is used, remove the installed lock pin.
amxuuw00004411

7.  Install the chain guide (No.1).

8.  Verify that there is no looseness in the timing chain, and re-verify that each sprocket is in the specified location.

9.  Rotate the crankshaft clockwise two turns and inspect the valve timing.

bp25ue00000062

Note
•  The timing mark of SKYACTIV-G 2.5T is not parallel with the upper surface of the cylinder head.


Engine Front Cover Assembly Note

Note
•  For a new engine front cover, the positioning pins in the two locations shown in the figure project to the outside of the engine.
bp25ue00000063

1.  If the engine front cover is newly replaced, tap the positioning pins in the two locations to the seal surface side.

bpe5ue00000033

2.  When reusing the engine front cover installation bolts, remove silicone sealant adhering to the bolts.

Caution
•  If a bolt with silicone sealant adhering to it is used, it could result in cracks in the cylinder head and cylinder block.
bpe5ue00000046

3.  Completely clean and remove oil, dirt, silicone sealant or other foreign matter that may be adhering to the engine front cover, cylinder head, and cylinder block.

Caution
•  If oil, dirt and silicone sealant remains on the silicone sealant application area, the silicone sealant will not seal which will cause oil leakage.
•  Apply the silicon sealant in a single, unbroken line.
•  To prevent silicone sealant from hardening, adhere the engine front cover and the cylinder block firmly within 10 min. after applying silicone sealant. After adhering them, tighten the installation bolts immediately.

4.  Apply silicone sealant (TB1217D or equivalent) to the engine front cover as shown in the figure.

bp25ue00000064

Thickness
A: 2—6 mm {0.1—0.2 in}
B: 4—6 mm {0.16—0.23 in}
C: 4—8 mm {0.2—0.3 in}

5.  Apply silicone sealant to the areas shown in the figure.

bp25ue00000065

Caution
•  Apply the silicone sealant so that it goes into the cylinder head gasket.

6.  Install the engine front cover to the engine.

Note
•  Temporarily install an appropriate bolt to the drive belt auto tensioner installation bolt hole to prevent:
―  A silicone sealant adhesion malfunction in the drive belt auto tensioner installation bolt hole.
―  A bolt mis-installation due to silicone sealant hardening.
bp25ue00000066

7.  Prepare an appropriate M8 × 1.25 bolt (length 40 mm {1.6 in}).

Caution
•  For the number 10 bolt of the tightening order, install the bolts with new washer.

8.  Tighten the engine front cover installation bolts in the order shown in the figure.

bp25ue00000067

Tightening torque
20—26 N·m {2.1—2.6 kgf·m, 15—19 ft·lbf}

9.  Remove the bolt installed to the drive belt auto tensioner installation bolt hole when installing the drive belt auto tensioner.


Oil Pan Assembly Note

1.  Completely clean and remove any oil, dirt, sealant or other foreign matter that may be adhering to the cylinder block and oil pan.

2.  When reusing the oil pan installation bolts, clean any old sealant from the bolts.

Caution
•  Apply the silicon sealant in a single, unbroken line around the whole perimeter.
•  To prevent silicone sealant from hardening, adhere the oil pan to the cylinder block within 10 min. after silicone sealant is applied. Tighten the installation bolts completely soon after adhering.
•  Using bolts with the old silicone sealant adhering could cause cracks in the cylinder block.
ac5wzw00007109

3.  Apply silicone sealant to the oil pan along the inside of the bolt holes as shown in the figure.

bp25ue00000068

Thickness
3.0—7.0 mm {0.12—0.27 in}

4.  Install the oil pan using the following procedure:

(1)  Install the oil pan to the cylinder block.
(2)  Temporarily tighten the two bolts shown in the figure.
bp25ue00000069
(3)  Tighten the bolts in the order shown in the figure.
bp25ue00000070
Tightening torque
8—11 N·m {82—112 kgf·cm, 71—97 in·lbf}


Front Oil Seal Assembly Note

1.  Apply clean engine oil to the inner surface of a new front oil seal.

2.  Insert the front oil seal into the engine front cover by hand.

3.  Tap the oil seal in evenly using the SST and a hammer.

am3uuw00008830
bpe5ue00000037

Front oil seal press on amount
0—1.0 mm {0—0.039 in}


Crankshaft Pulley Lock Bolt Assembly Note

1.  Hold the crankshaft using the SST.

bp26ze00000015

2.  Tighten the crankshaft pulley lock bolt in the order shown in the following two steps.

Tightening procedure
Step 1: 90—110 N·m {9.2—11 kgf·m, 67—81 ft·lbf}
Step 2: 55—65°


Oil Shower Pipe Assembly Note

1.  Install the oil shower pipe in the order shown in the figure.

bp25ue00000072

Tightening torque

Installation position

Tightening torque
1
9—12 N·m {92—122 kgf·cm, 80—106 in·lbf}
2, 3
8.0—9.0 N·m {82—91 kgf·cm, 71—79 in·lbf}


Cylinder Head Cover Assembly Note

Caution
•  To assure the sealing performance of the cylinder head cover, be careful of the following:
―  Verify that the cylinder head cover gasket is inserted into the cylinder head cover groove and install the cylinder head cover.
―  Completely clean and remove any oil, dirt, sealant or other foreign matter from the seal surface.
•  To prevent silicone sealant from hardening, adhere the cylinder head cover and the cylinder head within 10 min. after silicone sealant is applied. Tighten the installation bolts completely soon after adhering.

1.  Insert a new cylinder head cover gasket into the cylinder head cover groove.

2.  Apply silicone sealant to the areas shown in the figure.

bp25ue00000073

3.  Install the cylinder head cover.

4.  Temporarily tighten the cylinder head cover bolts.

5.  Tighten the cylinder head cover bolts in the order shown in the figure.

bp25ue00000075

Tightening torque
6.0—7.0 N·m {62—71 kgf·cm, 54—61 in·lbf}

6.  Measure the tightening torque again and verify that it is 6.0 N·m {61 kgf·cm, 53 in·lbf} or more.