Isuzu KB P190. Manual — part 202

ENGINE MECHANICAL 6A – 3

Lubricating Flow . . . . . . . . . . . . . . . . . . . . . . . . . . 6A- 126

Oil Pump and Oil Filter . . . . . . . . . . . . . . . . . . . . . . . .. 6A- 127

Oil Pump . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6A- 128

Disassembly . . . . . . . . . . . . . . . . . . . . . . . . . . ... 6A- 128

Inspection and Repair. . . . . . . . . . . . . . . . . . . . . . . 6A- 129

Reassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . 6A- 130

Oil Filter and Oil Cooler. . . . . . . . . . . . . . . . . . . . . . . . 6A- 131

Disassembly . . . . . . . . . . . . . . . . . . . . . . . . . . ... 6A- 131

Inspection and Repair. . . . . . . . . . . . . . . . . . . . . . . 6A- 132

Reassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . 6A- 133

Inter Cooler . . . . . . . . . . . . . . . . . . . . . . . . . . . . ... 6A- 135

Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6A- 136

Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6A- 136

Special Tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6A- 137

6A – 4 ENGINE MECHANICAL

MAIN DATA AND SPECIFICATIONS

Engine model

Item

4JA1T (L)

4JA1TC

Engine type

Combustion chamber type

Cylinder liner type

Timing gear train system

Four-cycle, overhead valve, water cooled

Direct injection

Dry type, chrome plated

Gear drive

No. of cylinders-bore

× stroke

mm (in)

4 – 93

× 92 (3.66 × 3.62)

No. of piston rings

Compression ring: 2 / Oil ring: 1

Total piston displacement

cm

3

(in

3

)

Compression ratio (to 1)

2,499 (152.4)

18.5

Compression pressure

MPa (kg/cm

2

/psi)

3.0 (31.0/441) – 200 rpm

Engine weight (dry)

kg (lb)

Approximately 239 (527)

Fuel injection order

1 – 3 – 4 - 2

Fuel injection timing BTDC

deg

8

-

Specified fuel type

Idling speed

rpm

Valve clearances (At cold): Intake

mm (in)

Exhaust

mm

(in)

Intake valves

Open at (BTDC)

deg

Close at (ABDC)

deg

Exhaust valves

Open at (BBDC)

deg

Close at (ATDC)

deg

Fuel system

JIS No. 2, DIN/EN590, GB252-1944 Diesel fuel

730

± 25 (A/C Off)

780

± 25 (A/C ON)

0.4 (0.016)

0.4 (0.016)

24.5

55.5

54.0

26.0

Injection pump type

BOSCH distributor VE type

BOSCH distributor VP44 type

Governor type

Mechanical (Half all speed

type)

Electronically controled

Injection nozzle type

Injection nozzle opening pressure

Hole with 5 orifices

MPa (kg/cm

2

/psi)

1st 19.1 (195 / 2,773)

1st 19.0 (194 / 2,755)

2nd (Reference)

25.5

∼27.0

(260

∼275 / 3,702∼3,920)

2nd (Reference)

34.0

∼35.5

(347

∼362 / 4,936∼5,154)

Main fuel filter type

Lubricating system

Lubricating

method

Cartridge paper element and water separator

Pressure circulation

Specified engine oil (API grade)

ISUZU genuine 10W – 30 (API CD of ACEA B2/B3)

ENGINE MECHANICAL 6A – 5

Engine model

Item

4JA1T (L)

4JA1TC

Cooling system

Water pump type

Centrifugal

Thermostat type

Wax pellet with jiggle valve

Air cleaner type

Dry paper element

Viscous paper element

Battery type/voltage

× No. of units

80D26L

× 1

95D31L

× 1 (OPT)

Generator capacity

V-A

12 – 60

12 – 80

Starter motor output

V-kW

12 – 2.3

Turbocharger model

Turbine

type

Compressor

type

*IHI RHF 4H

Mixed flow type

Backward & rake

*IHI: Ishikawajima-Harima Heavy Industries., Ltd.

6A – 6 ENGINE MECHANICAL

MAIN DATA AND SPECIFICATIONS

Engine model

Item

4JH1TC

Engine type

Four-cycle, overhead valve, water cooled

Combustion chamber type

Direct injection

Cylinder liner type

Timing gear train system

Dry type, chrome plated

Gear drive

No. of cylinders-bore

× stroke

mm (in)

4 – 95.4

× 104.9 (3.76 × 4.13)

No. of piston rings

Compression ring: 2 / Oil ring: 1

Total piston displacement

liter

Compression ratio (to 1)

2,999

18.3

Compression pressure

MPa (kg/cm

2

/psi)

3.0 (31.0/441) – 200 rpm

Engine weight (dry)

kg (lb)

MT: Approximately 249 (549)

AT: Approximately 236 (520)

Fuel injection order

1 – 3 – 4 - 2

Specified fuel type

JIS No.2, DIN/EN590, GB252-1944 Diesel fuel

Idling speed

rpm

700

± 25 (A/C OFF)

800

± 25 (A/C ON)

Valve clearances (At cold): Intake

mm (in)

Exhaust

mm

(in)

Intake valves

Open at (BTDC)

deg

Close at (ABDC)

deg

Exhaust valves

Open at (BBDC)

deg

Close at (ATDC)

deg

Fuel system

Injection pump type

0.4 (0.016)

0.4 (0.016)

24.5

55.5

54.0

26.0

BOSCH distributor VP44 type

Injection nozzle type

Injection nozzle opening pressure

MPa (kg/cm

2

/psi)

Hole with 5 orifices

1st 19.5 (199/2,828)

2nd (Reference) 34.3

∼35.8 (350∼365/4,980∼5,197)

Main fuel filter type

Lubricating system

Lubricating

method

Cartridge paper element and water separator

Pressure circulation

Specified engine oil (API grade)

ISUZU genuine 10W – 30 (API CD of ACEA B2/B3)

Oil pump type

Oil filter type

Gear

Cartridge paper element

Oil capacity

lit (US/UK gal)

6.2 (1.64/1.36) (For 4

× 2)

7.0 (1.85/1.54) (For 4

× 4)

Oil cooler type

Water cooled