Gear ratio
Vehicle speed (km/h)
Gear
Basic range
Off-road gears (x 3.19)
Forward
Reverse
Forward
Reverse
Forward
Reverse
U 4023
1
9.570
14.569
6.6
4.4
2.1
1.4
2
6.635
10.101
9.6
6.3
3.0
2.0
3
4.375
6.660
14.5
9.5
4.6
3.0
4
3.219
4.900
19.7
13.0
6.2
4.1
5
2.188
3.330
29.0
19.1
9.1
6.0
6
1.517
2.309
41.9
27.5
13.1
8.6
7
1.000
1.522
63.5
41.7
19.9
13.1
8
0.736
1.120
86,4
56.7
27.1
17.8
U 5023
1
9.570
14.569
6.9
4.5
2.2
1.4
2
6.635
10.101
9.9
6.5
3.1
2.0
3
4.375
6.660
15.0
9.9
4.7
3.1
4
3.219
4.900
20.4
13.4
6.4
4.2
5
2.188
3.330
30.1
19.8
9.4
6.2
6
1.517
2.309
43.4
28.5
13.6
8.9
7
1.000
1.522
65.8
43.2
20.6
13.6
8
0.736
1.120
89,6*
58.8
28.1
18.4
Rated engine speed: 2200 rpm
* Speed limiter at 90 km/h
Final drive ratio:
i = 6.53 (U 4023) i = 6.94 (U 5023)
U 4023 tyres:
335/80 R20 Michelin XZL (standard)
U 5023 tyres:
365/85 R20 Michelin XZL (standard)
For conversion factors for vehicle speeds with other tyres: see “Vehicle speed conversion factor chart” on page 92.
Vehicle speeds – U 4023 / U 5023
Technical Manual
Mercedes-Benz Special Trucks
91
Transmission