Isuzu KB P190. Manual - part 752

Engine Mechanical – V6 

Page 6A1–231 

 

Page 6A1–231 

CAUTION

 

The valve stem oil seal must not come loose 
from the valve guide when the valve (1) is 
installed. 

6 

Insert the valve into the valve guide until it bottoms on 
the valve seat. 

 

 

 

 

Figure 6A1 – 391 

7 

Position the valve spring (2) on the spring seat (1). 

8 

Place the valve spring retainer onto the valve spring. 

CAUTION

 

Do not compress the valve springs less than 
24.0 mm. Contact between the valve spring 
retainer and the valve stem oil seal can 
cause potential valve stem oil seal damage. 

 

Compressed valve springs (1) have high 
tension against the valve spring 
compressor (2). Valve springs that are not 
correctly compressed by, or are released 
from, the valve spring compressor can be 
ejected from the valve spring compressor 
with intense force. Use care when 
compressing or releasing the valve spring 
with the valve spring compressor and when 
removing or installing the valve stem keys. 
Failing to use care may cause personal 
injury. 

 

Figure 6A1 – 392 

9 

Compress the valve spring using valve spring 
compressor Tool No. J-8062 and adaptor Tool No. 
EN-46119. 

 

 

 

CAUTION

 

Ensure correct directional placement of 
valve collets (1) in Tool No. EN-46117 (2). 
The valve collets must be installed with the 
tapered end towards the valve stem seal. 

 

Figure 6A1 – 393 

Engine Mechanical – V6 

Page 6A1–232 

 

Page 6A1–232 

10 

With the spring compressed, install the valve collets 
into Tool No. EN 46117. 

 

 

 

 

 

Figure 6A1 – 394 

11 

Place the collets into position by pushing the tool (1) 
downward and releasing tension on the valve spring 
compressor (2). 

12 

Verify the valve collets are installed by placing a rag 
over the valve tip and tapping with a dead-blow 
hammer. The valve collets and the spring should 
remain in place. 

 

 

Figure 6A1 – 395 

Engine Mechanical – V6 

Page 6A1–233 

 

Page 6A1–233 

Reinstall 

Right-hand Side (Bank 1) Cylinder Head 

The reinstallation procedure for the right-hand side cylinder head assembly is the reverse of the removal procedure, 
noting the following: 

1 

Ensure all fasteners are tightened to the correct torque specification. 

2 

Using crankshaft rotation Tool No. EN-46111 (1), 
align the crankshaft sprocket timing mark (2) with the 
indexing mark (3) on the oil pump housing. 

 

 

Figure 6A1 – 396 

3 

Ensure the deck face is clean and the cylinder head 
locating pins are securely mounted in the cylinder 
block deck face. 

4 

Install a new right-hand cylinder head gasket (1) 
using the deck face locating pins for retention. 

 

Figure 6A1 – 397 

5 

Align the cylinder head with the locating pins. 

6 

Place the cylinder head in position on the deck face. 

N O T E  

Do not allow oil on the cylinder head bolt 
bosses. 

CAUTION

 

Do not reuse the old M11 cylinder head bolts 
(1 to 8 inclusive). 

7 

Install new M11 cylinder head bolts (1) eight places 
and tighten in the sequence shown and to the correct 
torque specification. 

 

 

Figure 6A1 – 398 

Engine Mechanical – V6 

Page 6A1–234 

 

Page 6A1–234 

„ Cylinder head M11 attaching bolt 
torque specification: 
 Stage 

1: .............40.0 – 50.0 Nm 

 Stage 

2: ..............................120° 

 

 

Figure 6A1 – 399 

Left-hand Side (Bank 2) Cylinder Head 

The reinstallation procedure for the left-hand side cylinder head assembly is the reverse of the removal procedure, noting 
the following: 

1 

Ensure all fasteners are tightened to the correct torque specification. 

2 

Using crankshaft rotation Tool No. EN-46111 (1), 
align the crankshaft sprocket timing mark (2) with the 
indexing mark (3) on the oil pump housing. 

 

Figure 6A1 – 400 

3 

Ensure the deck face is clean and the cylinder head 
locating pins are securely mounted in the cylinder 
block deck face. 

4 

Install a new cylinder head gasket (1) using the deck 
face locating pins for retention. 

 

Figure 6A1 – 401