250 D long-wheelbase chassis

Combustion principle:
four-stroke Diesel (with indirect injection)
Configuration:
front, longitudinal; vertical
Engine type:
OM 602 D 25 / 602.912
Number of cylinders / arrangement:
5 / in line; 15° inclination to the right
Bore x Stroke:
87.0 x 84.0 mm
Total displacement:
2497 cc (tax classification: 2479 cc)
Compression ratio:
22.0
Rated output:
90 hp / 66 kW at 4600 rpm; from 02.1989: 94 hp / 69 kW at 4600 rpm
Rated torque:
154 Nm at 2800 rpm; from 02.1989: 158 Nm at 2600 - 3100 rpm
Number of valves / arrangement:
1 intake, 1 exhaust / overhead
Valve operation:
1 overhead camshaft
Camshaft drive:
double roller chain
Fuel system:
indirect injection, mechanically controlled; Bosch 5-plunger injection pump
Fuel tank: position / capacity:
behind the rear axle / 72 l

Frame design:
steel unit body
Front-wheel suspension:
A-arm / shock-absorber strut
Rear-wheel suspension:
multilink suspension with hydropneumatic level control
Front springs:
coil springs, torsion bar stabiliser
Rear springs:
coil springs, hydropneumatic spring struts, torsion bar stabiliser
Shock absorber front/rear:
gas-pressure shock absorber struts / gas-pressure shock absorbers
Steering:
recirculating-ball power steering
Brake system (foot brake):
hydraulic dual-circuit brake system with vacuum booster, antilock system optional (from 09.1988 as standard); four-wheel disc brakes
Parking brake (hand brake):
mechanical (foot-operated), acting on rear wheels
Wheels:
sheet-steel wheels (light-alloy wheels optional)
Wheel rims:
6 1/2 J x 15 H 2
Tires:
195/65 R 15 91 T
Driven wheels:
rear wheels
Drivetrain:
divided cardan shaft