Workshop Manual

GENERAL INFORMATION 1–7
MAIN DATA AND SPECIFICATIONS
Engine Model
AA-6BG1 BB-6BG1T
Item
Engine type Water cooled, four cycle, vertical in-line overhead valve
Combustion chamber type Direct injection
Cylinder liner type Dry
No. of cylinders - bore × stroke mm (in) 6 – 105.0 × 125.0 (4.13 × 4.92)
Total piston displacement L (cid) 6.494 (396)
Compression ratio 18.0 to 1
* Engine dimensions mm (in) 1143 × 672 × 797 1204 × 762 × 961
Length × width × height (45.0 × 26.5 × 31.4) (47.4 × 30.0 × 37.8)
* Engine weight (Dry) kg (lb) 458 (1009) 484 (1067)
Fuel injection order 1–5–3–6–2–4
Specified fuel Diesel fuel (ASTM D975 No. 2D)
Injection pump In-line plunger, Bosch AD type
* Governor Mechanical, RSV type
Injection nozzle Multi hole
Injection starting pressure MPa kgf/cm
2
(psi) 18.1 (185/2,630)
Fuel filter type Cartridge (spin-on)
Water sedimentor (If so equipped) Sedimenter/water level indicating type
Compression pressure MPa (kgf/cm
2
/psi) 3.0 (31/441) at 200 min
-1
, at sea level
(At warm)
Valve clearances (At cold) Intake mm (in) 0.40 (0.016)
Exhaust mm (in) 0.40 (0.016)
Lubrication method Pressurized circulation
Oil pump Gear type
Main oil filter type Cartridge (spin-on)
* Lubricating oil volume L (US gal) 13.0 (3.4) 21.5 (5.68)
Oil cooler Water cooled integral type
Cooling method Pressurized forced circulation
Coolant volume (engine only) L (US gal) 12 (3.2)
Water pump Belt driven impeller type
Thermostat type Wax pellet type
* Generator V-A 24–25 24–40
* Starter V-KW 24–4.5
* Turbocharger manufacturer – IHI
* Turbocharger model – RHG6
Note: 1. These specifications are based on the standard engine.
2. Specifications for items marked with an asterisk (*) will vary according to the type of equipment
on which the engine is installed.
If you are unable to locate the data applicable to these specifications, please contact Isuzu
Motors LTD through your machine supplier.