Page 569 of 2490
 
22
. 
Remove the chain from the VVT  unit and from the crankshaft 
pulley. 
 
23
 . 
Remove the camshaft locking tool 303 - 530 and transfer it to  
the B-Bank camshafts, aligning the shafts slightly as necessary.
 
 
24
 . 
Loosen the bolt which secures  the sprocket to the camshaft. 
 
25
 . 
Loosen the bolt which secures  the VVT unit to the camshaft. 
26.  Remove the primary ch ain tensioner bolts. 
 
   
         
        
        
     
        
        Page 572 of 2490

 
2. Fi
t the retaining / pivot bolt and tighten it to 12 - 16 
Nm. 
 
5.  Refi
 t the primary chain tensione
r assembly. Refer to Operation 
12.65.55 in this Section. 
U s
 e a wedge 303 - 533 (or two if required) between the 
primary chain tensioner and te nsioner blade, to take up 
the slack in the chain.  
 
6.  Tigh te
 n the exhaust camshaft
 sprocket securing bolt. 
1. Fit the chain tensioner tool 303 - 532 to the sprocket  holes. 
1. Apply force to the  to
 ol in
 an anti-clockwise direction 
to tension the chain on its drive side. 
2 .
  Whilst applying the opposing force to the sprocket 
and chain, tighten the sprock et securing bolt to 115 - 
125 Nm. 
 
7.  Tigh te
 n the VVT unit securing bolt. 
1. Whilst still applying  the opposing force to the 
sprocket and chain (using 303 - 532), check that the 
wedges are still in place,  tighten the VVT unit 
securing bolt to 115 - 125 Nm. 
Re
 move the chain tensioning
 tool and the wedge(s).  
8.  Remove the camshaft locking tool 303 - 530 and transfer it to 
the A-Bank camshafts, aligning the shafts slightly as necessary.
 
    
         
        
        
     
        
        Page 577 of 2490
 
Remove the 
sensor and allow 
it to hang free under the 
engine.  
2. Remove the access grommet (for torque converter  bolts) from the housing. 
7.  Install the damper securing bolt (old one) to the crankshaft, 
hand-tight only. 
 
8.  R
 otate the crankshaft until the triangular arrow indent on 
the drive plate is visible thro ugh the access hole; confirm 
that the timing flat on ea ch camshaft is uppermost. 
 
9.  Inst
 all the crankshaft setting peg 303-531 to the crankshaft 
position sensor location. 
1. Install the crankshaft setting peg 303-531. 
Position the crankshaft so  that the settin
 g peg engages 
fully into the timing slot.  
2. Install and tighten the bolt to secure the setting peg. 
10.  Remove the damper securing  bolt from the crankshaft. 
11.  Lower the vehicle on the ramp. 
 
12
 . 
Install the camshaft locking tool 303-530 to Bank 1 
camshafts, aligning the shafts slightly as necessary. 
13.  Loosen the bolt which secures the sprocket to the exhaust 
camshaft. 
 
   
         
        
        
     
        
        Page 579 of 2490
 
18
. 
Remove the chain from the cams haft sprocket and from the 
crankshaft sprocket. 
 
19
 . 
Remove the camshaft locking tool 303-530 and transfer it to 
Bank 2 camshafts, aligning the shafts slightly as necessary. 
 
20
 . 
Loosen the bolt which secures the sprocket to the exhaust 
camshaft. 
 
21
 . 
Loosen the bolt which secures the sprocket to the intake 
camshaft. 
22.  Remove the primary ch ain tensioner bolts. 
 
   
         
        
        
     
        
        Page 582 of 2490

 
2.
 Install the retaining / pivo
t bolt and tighten it to 12-
16 Nm. 
 
5.  Install the primary ch
 ain te
nsioner assembly. Refer to 
Operation 12.65.55. 
Use a wedge 3 03-5
 33 (or two if required) between the 
primary chain tensioner and te nsioner blade, to take up 
the slack in the chain.  
 
6.  Tigh te
 n the exhaust camshaft
 sprocket securing bolt. 
1. Install the chain tensioner tool 303-532 to the  sprocket holes. 
Appl y force 
 to the tool in an
 anti-clockwise direction to 
tension the chain on its drive side.  
2. Whilst applying the opposing force to the sprocket  and chain, tighten the sprock et securing bolt to 115-
125 Nm. 
 
7.  Tigh te
 n the intake camshaft
 sprocket securing bolt. 
1. Whilst still applying  the opposing force to the 
sprocket and chain (using 303-532), check that the 
wedges are still in place, ti ghten the securing bolt to 
115-125 Nm. 
R e
 move the chain tensioning
 tool and the wedge(s).  
8.  Remove the camshaft locking t ool 303-530 and transfer it to 
Bank 1 camshafts, aligning the shafts slightly as necessary. 
    
         
        
        
     
        
        Page 588 of 2490
 
1.
 Fit the crankshaft setting peg 303 - 531. 
Position the crankshaft so 
that the setting 
 peg engages 
fully into the timing slot.  
2. Fit and tighten the bolt to secure the setting peg. 
12.  Remove the damper securing  bolt from the crankshaft. 
13.  Lower the vehicle on the ramp. 
 
14.  F
 it the camshaft locking tool 303 - 530 to the A-Bank 
camshafts, aligning the shafts slightly as necessary. 
 
15.  L
 oosen the bolt which secures 
the sprocket to the camshaft. 
 
16.  Loosen
  the bolt which secure
s VVT unit to the camshaft. 
17.  Remove the primary ch ain tensioner bolts. 
    
         
        
        
     
        
        Page 605 of 2490

Engine - Crankshaft
 Rear Seal4.0L 
NA V8 - AJ27/3.2 L NA V8 - AJ26 
In-v
ehicle Repair 
Remov
al 
S
pecial Tool(s)
Crankshaft Rear Oi
l Seal Remover / 
Replacer. 
303 - 538 
1. Open the engine compartment and fit paint protection sheets. 
 
2.  Di
 sconnect the batt
ery ground cable. 
R
 emove the battery cover.  
3.  Remove the transmission. Refer to Operation 44.20. 01 in 
Section 307-01A. 
4.  Remove the drive plate. Refer to Operation 12.53.13. 
 
5.  F
 it and align the seal removal tool 303 - 538 to the crankshaft. 
1. Unscrew the two nuts towards the head of each bolt to allow the bolts to fit fully into the crankshaft. 
2. Unscrew the center bolt until it is below the face of  the main tool and position the tool to the rear of the 
crankshaft. 
3. Lightly tighten the two bolts so that they fully locate  in the crankshaft. 
 
6.  Hold the tool against th
 e cran
kshaft and lightly and evenly 
tighten the two nuts to the face of the tool; to secure the tool 
and to hold it parallel to the face of the crankshaft. 
7.  Secure the oil seal to the tool using the three self-tapping 
 
   
         
        
        
     
        
        Page 607 of 2490

 
  
3. 
F
 it the tool to the crankshaft. 
E
nsure that the cent
re bolt is unscrewed to below the face 
which is to fit to the crankshaft and position the tool to the  
crankshaft.  
Chec
 k that the nuts are fully unscrewed and enter the two 
bolts to the crankshaft thre ads and lightly tighten.  
 
4.  Tigh
 ten the nuts, finger tight, to hold the tool assembly against
 
the seal. Check that the seal  and the tool are approximately 
parallel to the rear of the engine. 
 
5.  Pres
 s the seal into the housing. 
Ho
ld each bolt stationary, in
 turn, and tighten its nut a 
small amount (approximately two  to three flats) in turn, to 
press the seal fully into the housing. until the tool is in 
contact with the cylinder block.  
6.  Remove the tool from the crankshaft. 
Chec
 k that the seal is located correctly.  
7.  Fit the drive plate. Refer to Operation 12.53.13. 
8.  Install the transmission. Refer to Operation 44.20. 01 in 
Section 307-01A. 
9.  Remove the paint protection sheets and close the engine 
compartment cover. 
10.  Connect the battery and fit the battery cover. 
Re
 fer to the Battery Reconnection Procedure 86.15.15.