Isuzu engine C22NE / 22LE / 20LE. Service manual — part 23

6A-74 ENGINE MECHANICAL (C22NE, 22LE, 20LE)

Oxygen Sensor (If applicable)

Removal

1.

Remove wiring harness plug.

2.

Remove oxygen sensor from the front exhaust pipe.

Tighten (Torque)

Oxygen sensor in exhaust pipe - 30 N

⋅

m (3.1 kgf

⋅

m)

Throttle Valve Position Sensor

Removal

1.

Remove wiring harness connector.

2.

Remove throttle valve position sensor.

Installation

1.

Install throttle valve position sensor.

2.

Install wiring harness connector.

Accelerator Pedal and Cable

Removal

1.

Remove pad stopper from pedal stop bolt.

Measure

Dimension "A":

RD=15mm

±

0.5mm/0.59in.

±

0.02in.

LD=14mm

±

0.5mm/0.55in.

±

0.02in.

Installation

1.

Install pad stopper.

Inspection

Ensure that accelerator pedal is fully in idle position and

accelerator level at engine is in closed position.

Pull outer sleeve of accelerator cable towards pedal and check

that clip on sleeve is in slot nearest to grommet.

Reposition clip if necessary, and check that full throttle and idle

positions are obtained at engine lever.

ENGINE MECHANICAL (C22NE, 22LE, 20LE) 6A-75

Air Cleaner Filter

Removal

1.

Remove positive ventilation hose connector.

2.

Remove intake air temperature sensor.

3.

Remove mass air flow sensor.

4.

Remove air cleaner duct assembly.

5.

Remove air cleaner element.

Inspection

Check the air cleaner filter for damage or dust clogging.
Replace if it is damaged, or clean if it is clogged.

Cleaning Method

Tap the air cleaner filter gently so as not to damage the paper
filter, or clean the element by blowing with compressed air of
about 490 kPa (71 psi) from the clean side if it is extremely
dirty.

Installation

1.

Install air cleaner element.

2.

Attach the air cleaner duct cover to the body completely,
then clamp it with the clip.

3.

Install mass air flow sensor.

4.

Install mass air temperature sensor.

5.

Install positive crankcase ventilation hose connector.

Spark Plug Thread

Recondition

Ream thread and recut using commercially available spark

plug thread drill (observe manufacturer's instructions).

Removal

Remove thread bush on spark plug. (dimensions (A) =

17mm/0.67in.)

Tighten (Torque)

Spark plug with thread bush into cylinder head - 25N

⋅

m (2.5

kgf

⋅

m) - use

6A-76 ENGINE MECHANICAL (C22NE, 22LE, 20LE)

TECHNICAL DATA

SOHC Gasoline Engine C22NE/22LE/20LE

Engine Oil Viscosity

The following engine oils can be used:
A = single-grade oils
B = multigrade oils
C = easy run oils
depending on the outside temperature.

Engine Oil Quality

It is important that the following API and CCMC classes are
used:

Engines

Single and multigrade oils

Easy run oils

Petrol

API-SF/CC, SF/CD, SG/CC,

SG/CD, CCMC/G4

API-SF/CC, SF/CD, SG/CD

CCMC-G5/PD2

Important!

CD engine oils designed by manufacturers specially for diesel

engines are not suitable for petrol engines, unless a sufficient

performance class for petrol engines (e.g. API-SF/CCMC-G4)

is also indicated.

Disposal.

Observe the relevant national regulations when disposing of

used oil.

Engine Oil Filling Quantities

Initial filling

(litres)

Filling quantity

with filter change*

(litres)

MIN to MAX

(litres)

4.25

4.5

1.00

*Up to mark "MAX" on oil dipstick

Oil Pump

Backlash

0.1 to 0.2mm

Gaps in gears opposite housing

0.03 to 0.1mm

Oil pressure at idle speed

Engine at operating

temperature (>70

°

C oil and

approx. 80

°

C coolant) 150

kPa/1.5 bar

Oil drain plug

M14

×

1.5

ENGINE MECHANICAL (C22NE, 22LE, 20LE) 6A-77

Cooling System

Radiator

Type:

Cross-flow

Radiator core surface in cm

2

:

2000

Cooling system capacity (in litres):

7.2

Anti-freeze Mixture

Anti-freeze Mixture

Required

Quantity

Up to-10

°

C

Quantity in litres

Up to-20

°

C

Quantity in litres

Up to-30

°

C

Quantity in litres

Up to-40

°

C

Quantity of litres

(in litres)

Water

(80%)

Anti-

Freeze

(20%)

Water

(66%)

Anti-

Freeze

(34%)

Water

(56%)

Anti-

Freeze

(44%)

Water

(48%)

Anti-

Freeze

(52%)

7.2

5.7

1.5

4.7

2.5

4.0

3.2

3.4

3.8

Cooling System (continued)

Fan

Type

Visco Clutch Fan

Number of blades

5

Distribution of blades

asymmetric

Diameter mm

Radiator cap

Boiling point

123

°

C

Opening pressure kPa (bar) 120 to 135 (1.20 to 1.35)

Thermostat

Start of opening

92

°

C

Fully opened

107

°

C

Type

Bypassed

Idle Speeds, CO Content, Ignition

Adjustment

Applicable Syatem

Idle speed in min

-1

(rpm)

Manual

CO content

in vol. %

Ignition timing in CA BTDC (adjustment

ensues at able speed,

ignition marks must align) with TDC

sensor measuring instrument:

Closed Loop System

825

*<0.4

*** 8 to 12

Open Loop System

825

**1.0

+0.2

-0.5

*** 8 to 12

Note) * CO content adjustment not applicable.

** CO content adjustment refer to 6E1-93

*** Ignition timing adjustment not possible.