Isuzu KB P190. Manual - part 651

Engine Mechanical – V6 

Page 6A1–125 

 

13 

Install the primary timing chain upper guide (1). 

14 

Install the primary timing chain upper guide bolts (2) 
and tighten to the correct torque specification. 

 

 

 

Primary timing chain upper guide 
attaching bolt torque specification...........20.0 – 26.0 Nm 

 

Figure 6A1 – 179 

15 

Ensure that the primary timing chain tensioner is 
being installed. 

Figure 6A1 – 180 

16 

Reset the primary timing chain tensioner. 

 

 

 

 

N O T E  

To reset the tensioner, use a suitably sized flat 
blade screwdriver (1) or Tool No. J 45027 (4) to 
wind the plunger in a clockwise direction, into 
the tensioner shaft (2). 

 

Figure 6A1 – 181 

Engine Mechanical – V6 

Page 6A1–126 

 

17 

Install the tensioner shoe assembly (1) into the 
primary timing chain tensioner body (2). 

 

Figure 6A1 – 182 

18 

Compress the shoe assembly into the body (2) and 
lock the primary timing chain tensioner by inserting 
Tool No. EN 46112 into the access hole in the side of 
the body. 

CAUTION

 

If Tool No. EN 46112 (1) is not inserted into 
the tensioner body, the plunger will remain 
in the locked position and no tension will be 
placed on the timing chain. 

19 

Slowly release pressure on the primary timing chain 
tensioner. The primary timing chain tensioner should 
remain compressed. 

 

 

 

Figure 6A1 – 183 

20 

Install a new primary timing chain tensioner gasket (1) 
to the tensioner (2). 

21 

Install the primary timing chain tensioner bolts (3) 
through tensioner and gasket. 

22 

Ensure the primary timing chain tensioner mounting 
surface on the engine block does not have any burrs 
or defects that would affect the sealing of the new 
gasket. 

 

Figure 6A1 – 184 

Engine Mechanical – V6 

Page 6A1–127 

 

23 

Place the primary timing chain tensioner (2) into 
position and loosely install the bolts (1) to the engine 
block. 

 

Figure 6A1 – 185 

24 

Verify the proper placement of the primary timing 
chain tensioner gasket tab (1). 

25 

Tighten the primary timing chain tensioner bolts (2) to 
the correct torque specification. 

 

 

 

Primary timing chain tensioner 
attaching bolt torque specification...........20.0 – 26.0 Nm 

 

Figure 6A1 – 186 

26 

Release the primary timing chain tensioner (1) by 
pulling out Tool No. EN 46112 (2) and unlocking the 
tensioner shaft. 

 

Figure 6A1 – 187 

 

Engine Mechanical – V6 

Page 6A1–128 

 

 

27 

Verify the primary and left-hand secondary timing 
chain timing mark alignments (1 to 12). 

 

Figure 6A1 – 188 

28 

Remove Tool No. EN 46105 from the left-hand and right-hand cylinder head camshafts. 

Right-hand Secondary Timing Chain Components 

1 

Install the primary timing chain components, refer to Primary Timing chain Components in this Section. 

2 

Using Tool No. EN46111 (1), rotate the crankshaft in 
a clockwise direction until the crankshaft sprocket 
timing mark (2) is aligned with the indexing mark (3) 
on the oil pump housing. 

Figure 6A1 – 189