Isuzu KB P190. Manual - part 525

6A-86 ENGINE MECHANICAL (C24SE) 

 

 

Con-rod 

 

Permissible, weight variation of con-rods without pistons and bearing shells within an engine 8 g. 

As the con-rods have no counterweights, re-working is not possible. 

Con-rods must be replaced only as a set. 

 

Crankshaft Grinding Dimensions 

 Crankshaft 

bearing journals 

I, II, III, IV, V 

 

Guide bearings 

III 

 

 

Con-Rod bearing journals 

1 to 4 

 

Con-rod 

 diameter 

in 

mm/colour code 

width 

in mm 

diameter 

in mm 

width 

in mm 

width 

in mm 

 

Standard Size for Production and Service 

 

from 57.974 

white 

to 57.981 

over 57.981 

green 

to 57.988 

over 57.988 

brown 

to 57.995 

26.002 
25.950 

 

48.988 
48.970 

 

26.580 
26.450 

 

26.390 
26.338 

 

 

 

 

 

 

Crankshaft, Cylinder Block (continued) 

Crankshaft and con-rod journal  Permissible out-of-round: 

0.04mm 

 
Out-of-round 

Permissible variation of 
middle crankshaft bearing 
journal when seating shaft into 
cylinder block: 0.03mm 

 
Permissible end play 

0.05 to 0.152mm 

 
Permissible main bearing play  Bearing I to V0.015 to 

0.04mm 

 
Permissible con-rod play 

0.006 to 0.031mm 

 
Permissible con-rod and play 

0.07 to 0.24mm 

 

 

 

 

ENGINE MECHANICAL (C24SE) 6A-87 

 
 
 
 
 
 
 

 

Crankshaft, Cylinder Block (continued) 

Flywheel 
Starter ring gear 

Before fitting, heat ring gear to 180

°C - 

230

°C 

 
Lateral run-out 

Permissible lateral run-out of installed 
starter ring gear to flywheel: 0.5mm 

 
Precision turning 

Permissible removal of material in clutch 
disc lining surface area: 0.3mm 

 
 

In order to achieve the functional 
relationship again after removal of material, 
the same removal of material must take 
place on the fore part of the flywheel 
(contact for clutch assembly) 

 
Dimension A: 2.1 to 2.2mm 
 
Cylinder block 
Top deck flatness 

mm  0.05 

Cylinder block height  mm  280

±0.075 

 

6A-88 ENGINE MECHANICAL (C24SE) 

Recommended Torque Values 

 

N

⋅m (kgf⋅m) 

 
Bearing cover to cylinder block  ........................................................................................  60 

1) 

6.1 +40

° to 50° 

Bracket for alternator to cylinder block  ............................................................................  40 

4.1 

Bracket for engine damping block to transmission  ..........................................................  60 

2)

 6.1 

Bracket for engine damping block to engine block  ..........................................................  60 

6.1 

Bracket for pump/compressor to engine block  ................................................................  35 

3.6 

Camshaft housing cover to housing  ................................................................................ 

8 

0.8 

Camshaft timing gear to camshaft ...................................................................................  50 

5.1 

Clamping bracket for alternator to intake manifold  ..........................................................  25 

2.5 

Clamping bracket to alternator .........................................................................................  25 

2.5 

Con-rod bearing cap to con-rod  .......................................................................................  35 

1)

 3.5 +45

° to 60° 

Crankshaft pulley bolts .....................................................................................................  20 2.0 
Cylinder head to cylinder block  ........................................................................................    25 

1)2)

 2.5  +90

° +90° 

+90

° 

Engine damping block to engine bracket .........................................................................  85 

8.7 

Engine damping block to side member ............................................................................  52 

1)

 5.3 

Exhaust manifold to cylinder head  ...................................................................................  22 

2.2 

 
1) Use new bolts 
2) Use new locking plates 
 

 

Recommended Torque Values 

 

N

⋅m (kgf⋅m) 

 
Flywheel to crankshaft  .....................................................................................................  65 

1)

 6.6 

+30

° to 45° 

Front exhaust pipe to exhaust manifold ...........................................................................  25 

2.5 

Guide sleeve for pressure bearing to transmission  .........................................................  22 

2.2 

Intake manifold to cylinder head  ......................................................................................  22 

2.2 

Lower alternator bracket  ..................................................................................................  25 

2.5 

Oil drain plug to oil pan  ....................................................................................................  45 4.6 
Oil intake pipe bracket to cylinder block ........................................................................... 

6 

2)

  

0.6 

Oil intake pipe to oil pump ................................................................................................ 

8 

0.8 

Oil pan to cylinder block  ................................................................................................... 

8 

2)3)

  

0.8 

Bearing bridge to cylinder block  ....................................................................................... 

8 

2)3)

 0.8 

Oil pressure switch to oil pump  ........................................................................................  30 

3.2 

Pump for power steering (ribbed V-belt) to engine block .................................................  30 

3.2 

Spark plugs in cylinder head  ............................................................................................  20 

2.3 

Starter support to cylinder block  ......................................................................................  25 

2.5 

Starter to cylinder block - engine side ..............................................................................  45 

4.6 

Starter to cylinder block - transmission side  ....................................................................  75 

7.6 

Thermostat housing to cylinder head ...............................................................................  15 

1.5 

Toothed belt drive gear to crankshaft  ..............................................................................  130 

1)

 13.3 

Toothed belt front cover  ................................................................................................... 

4 

0.4 

Toothed belt rear cover .................................................................................................... 

6 

0.6 

Toothed belt tension roller to oil pump .............................................................................  20 

2.3 

(M10) ............................................................................  45 

4.6 

Transmission to engine block   .........................................................................................  76 

7.7 

(M12) ............................................................................  60 

6.1 

Water pump to cylinder block  ..........................................................................................  17 

1.7 

 
1) Use new bolts 
2) Use Locking Compound 
3) Maximum installation time - 10 minutes 

ENGINE MECHANICAL (C24SE) 6A-89 

SPECIAL SERVICE TOOLS 

ITEM NO. 

ILLUSTRATION 

PART NO. 

PART NAME 

4 

 

 
 

5-8840-2634-0 
 
 

 
 

Aligner 

2 

 

 
 

5-8840-2593-0 

 

 
 

Cutter set 

3 

 

 
 

5-8840-2594-0 

 

 
 

Spring Compressor 

4 

 

 
 

5-8840-0451-0 

 

 
 

Installer 

5 

 

 
 

5-8840-2596-0 

 

 
 

Distance Gauge 

6 

 

 
 

5-8840-0455-0 

 

 
 

Assembly Sleeves 

7 

 

 

5-8840-2597-0 

 

 

Installer 

8 

 

 
 

5-8840-0457-0 

 

 
 

Remover / Installer 

10 

 

 

 

5-8840-0468-0 

 

 

 

Remover / Installer 

11 

 

 
 

5-8840-0459-0 

 

 
 

Installer