M939 Series Diesel
The M939 Series of diesel 5 Ton trucks is available through the Federal Excess Property Program (FEPP).
All M900 Series trucks have a 5-speed automatic transmission, Cummins Diesel engine, and are capable
of carrying payloads ranging from 10,000 to 15,000 pounds.
Vehicle Models
Truck, 5 Ton M939 Series Diesel
M923 Cargo
M925 Cargo
M927 Cargo
M928 Cargo
Engine and Transmission
Cummins Diesel
NHC 250, 240 HP @ 2100 RPM, basic and A1
CTA 8.3 210 HP @ 2100 RPM, A2
Governed RPM: 21
Idle RPM: 650 to 700
5 Speed Automatic O/D
Drive Axles: 3
Transfer: 2 Speed, manually shifted, air engaged front drive (Sprag)
Dimensions
Length, Height of M923: 307.2", height of 118.3", A1/A2: 121"
Length, Height of M925: 310.5", height of 118.3", A1/A2: 121"
Length, Height of M927: 383.2", height of 118.1", A1/A2: 120.6"
Length, Height of M928: 404.7", height of 118.1", A1/A2: 120.6"
Width: 97½" all models
Ground Clearance: 10½", A1/A2: 13.1"
Weights With Cargo Bed**
M923: 21,600 pounds, A1: 22,174 pounds, A2: 20,930 pounds
M925: 22,360 pounds, A1: 23,275 pounds, A2: 22,030 pounds
M927: 27,749 pounds, A1: 25,035 pounds, A2: 23,790 pounds
M928: 27,811 pounds, A1: 26,135 pounds, A2: 24,890 pounds
Payloads
Cross Country Payload: 10,000 pounds
Highway Payload: 10,000 pounds
Towed Load: 15,000 on pintle
Fluids
Cooling System: 47 quarts
Crankcase: 27 quarts with filter change, 23 without, basic and A1
Crankcase: 27 quarts with filter change, 18 without, basic and A2
Differentials: 12 quarts each
Fuel Tank: All cargo 81 gallons
Transmission: 17 quarts
Transfer: 6½ quarts>
Tire Pressure
11:00x20, Highway: 80 PSI front, 50 PSI rear
11:00x20, Cross Country: 60 PSI front, 30 PSI rear
11:00x20, Mud, Sand, Snow: 25 PSI front, 25 PSI rear
14:00 R 20 Super Singles, Highway: 60 PSI***
14:00 R 20 Super Singles, Cross Country: 35 PSI***
14:00 R 20 Super Singles, Mud, Sand, Snow: 25 PSI***
Maximum Speeds At Governed RPM
Basic
Gear
1st
2nd
3rd
4th
5th
Hi
12 mph
25 mph
33 mph
43 mph
50 mph
Low
5 mph
10 mph
13 mph
17 mph
23 mph
Hi
15 mph
29 mph
38 mph
47 mph
50 mph
Low
6 mph
12 mph
16 mph
20 mph
26 mph
A1/A2
Gear
1st
2nd
3rd
4th
5th
*
These a re bas ic models. A1 /A2 are upgra des.
** Super sing les are on A1/A2 models. The A2 is eq uipped with Ce n tra l T ire In fla tion Sys tem (CTIS), an d the tire
pressu re may b e changed from th e cab. Ba sic an d A1 tire pressure is cha nged manu ally at each tire