Type
1000 Series 4 cylinder Engines
AB - Turbocharged
AA - Naturally Aspirated
AK - Turbocharged
AM - Turbocharged and Intercooled
AR - Naturally Aspirated
Engine Build List Number
AA50608 - AR50656, AR50654, AR50678 - 56kw (75bhp), AK50745 60kw (80bhp)
AA50606 - 56kw (75bhp)
AB50607 - 67.5 kw (90.5bhp), AK50628 - 68.5 kw (92bhp)
AB50609 - 71.5kw (96bhp), AK50640 - 74.6 kw (100bhp) AM50647 85.5 kw (115bhp)
Bore
AA, AB, AK, AM
100mm (3.937 in)
AR
103mm (4.055 in)
Stroke
127mm (5.000 in)
Swept Volume
AB, AA, AK, AM
4 litres (243 in
3
)
AR
4.23 litres (258 in
3
)
Compression Ratio
AB
16.0:1
AA
16.5:1
AK, AM
17.25:1
AR
18.5:1
Compression Pressure
28 bar (400 lbf/in
2
)
[maximum variation between cylinders 3.5 bar (50 lbf/in
2
)]
Injection Sequence
1,3,4,2
Valve Clearance - Cold
- Inlet
0.20mm (0.008 in)
- Exhaust
0.45mm (0.018 in)
Oil Pressure (hot) at maximum speed
- AA
2.1 bar (30 lbf/in
2
)
- AB, AK, AM
2.6 bar (40 lbf/in
2
)
- AR
2.0 bar (30 lbf/in
2
)
Maximum Air Cleaner Restriction
559mm (22 in H
2
O)
Injection System Details - Refer to appropriate Engine Service Manual.
Idling Speed
- All builds
880 - 930 rev/min
Maximum Governed Speed
- All builds
2200 rev/min
Maximum No-load Speed (High Idle)
- All builds
2400 - 2440 rev/min
Cooling System
Coolant Pressure
0.48 bar (7 lbf/in
2
)
Coolant Temperature (Normal)
80-85 °C (176-185 °F)
Temperature Warning Light operates at:
98 °C (208 °F)
Note:
For further details of the engines refer to the following Engine Service Manuals:
Publication No. 9806/0100 (AA, AB)
Publication No. 9806/2140 (AK, AM, AR)
2 - 1
Section K
9803/3280
Section K
2 - 1
Issue 1
Technical Data