1ST Timing Chain
1st Timing Chain and Chain Tensioner Components
1st Timing Chain and Chain Tensioner Removal and Installation
Reference: 1st Timing Chain and Chain Tensioner Components
Removal
1) Remove engine assembly from vehicle.
2) Remove timing chain cover.
3) For reinstallation of timing chain, align 8 timing marks as shown in figure by turning crankshaft.
4) Remove LH (No.1) bank 2nd timing chain.
5) Remove the following parts, referring to 1st Timing Chain and Chain Tensioner Components.
^ Timing chain guide No.1 and No.2.
^ Timing chain tensioner.
^ Timing chain tensioner adjuster.
^ Idler sprocket No.1 and 1st timing chain.
^ Idler sprocket No.2 and sprocket shaft.
6) Remove RH (No.2) bank 1st timing chain intake camshaft sprocket bolt. To remove it, fit a spanner to hexagonal part (3) at the center of camshaft (2) to hold it stationary.
7) Remove RH (No.2) bank 1st timing chain intake camshaft sprocket (1).
8) Remove 1st timing chain crankshaft sprocket.
Installation
Reference: 1st Timing Chain and Chain Tensioner Inspection
1) Check timing pulley key (1) of crankshaft is on specified position as shown in figure.
2) Install 1st timing chain crankshaft sprocket (2) to crankshaft as shown in figure.
3) Check timing mark on RH (No.2) bank intake camshaft as shown in figure.
4) Install RH (No.2) bank 1st timing chain intake camshaft sprocket (1) noting the following points.
^ The sprocket should be set in such way that its timing marks (4) can be seen.
^ Camshaft (2) should be held stationary by using a spanner at its hexagonal parts (3) as shown in figure.
5) Install timing chain tensioner (1) as shown in figure.
Tightening torque
Timing chain tensioner nut b: 25 Nm (2.5 kg-m, 18.0 ft. lbs.)
6) Install 1st timing chain by aligning match marks (2) on RH silver plate (1) of 1st timing chain and RH (No.2) bank 1st timing chain intake camshaft sprocket (3).
7) Apply oil to bush of idler sprocket No.2.
8) Install idler sprocket No.2 and sprocket shaft.
9) Install idler sprocket No.2 by aligning match marks (2) on LH silver plate (1) of 1st timing chain.
10) Install crankshaft sprocket by aligning match marks (2) on yellow plate (1) of 1st timing chain and crankshaft timing sprocket.
To install it, fit a spanner to hexagonal part at the center of RH (No.2) bank intake camshaft to turn a little.
CAUTION: Do not turn camshaft more than necessary. If turned excessively, valve and piston may get damaged.
11) Apply oil to bearing of idler sprocket No.1.
12) Install idler sprocket No.1.
Tightening torque
Idler sprocket No.1 bolt c: 55 Nm (5.5 kg-m, 40.0 ft. lbs.)
13) With latch of tensioner adjuster No.1 returned and plunger (1) pushed back into body, insert stopper (3) into latch (2) and body.
After inserting it, check to make sure that plunger (1) will not come out.
14) Install timing chain tensioner adjuster No.1 (1).
Tightening torque
Timing chain tensioner adjuster No.1 bolt a: 11 Nm (1.1 kg-m, 8.0 ft. lbs.)
15) Pull out stopper (3) from adjuster No.1 (1).
16) Install timing chain guide No.1 (2) and No.2 (1).
17) Check each aligned timing marks as shown in figure.
18) Install LH (No.1) bank 2nd timing chain.
19) Install timing chain cover.
20) Install oil pans.
21) Install cylinder head covers.
22) Install intake manifold, intake collector and electric throttle body assembly, referring to Intake Collector and Intake Manifold Removal and Installation and Electric Throttle Body Assembly Removal and Installation.
23) Install engine assembly to vehicle.
1st Timing Chain and Chain Tensioner Inspection
Reference: 1st Timing Chain and Chain Tensioner Removal and Installation
Timing Chain Guides No.1 and No.2
Check shoe for excessive wear or damage.
If any malfunction is found, replace it.
Timing Chain Tensioner
Check shoe (1) for wear or damage.
If any malfunction is found, replace it.
1st Timing Chain Crankshaft Sprocket
Check teeth of sprocket for wear or damage.
If any malfunction is found, replace it.
RH (No.2) Bank 1st Timing Chain Intake Camshaft Sprocket
Check teeth of sprocket for wear or damage.
If any malfunction is found, replace it.
Idler Sprocket No.1
Check teeth of sprocket for wear or damage.
If any malfunction is found, replace it.
Idler Sprocket No.2
Check teeth of sprocket for wear or damage.
If any malfunction is found, replace it.
1st Timing Chain
Check timing chain for wear or damage.
Of any malfunction is found, replace it.
Timing Chain Tensioner Adjuster No.1
Check that latch (1) and tooth surface (2) are free damage and latch functions properly.
If any malfunction is found, replace it.
