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