M561 1.25-Ton 6x6 Gama Goat: Specifications
Updated September 23, 2001
Updated September 23, 2001
These specifications come from TM 9-2320-242-34, dated April, 1970, and from my truck's dataplates.
| Name | M561 1.25-Ton 6x6 Gama Goat |
|---|---|
| Manufacturer | Consolidated Diesel Electric Corporation (CONDEC) |
| Year | 1970 |
| Curb weight | 7,300 lbs. |
|---|---|
| Payload | 2,900 lbs. |
| Gross weight | 10,200 lbs. |
| Front axle GVW | 2,745 lbs. |
| Center axle GVW | 3,900 lbs. |
| Rear axle GVW | 3,555 lbs. |
| Length | 226.6 in. |
|---|---|
| Width | 83.80 in. |
| Height (GVW) | 90.80 in. |
| Reducible height (GVW) | 65.00 in. |
| Tread | 72.00 in. |
| Ground clearance | 15.00 in. |
| Pintle height | 22 in. |
| Make | Detroit Diesel |
|---|---|
| Series | 3-53 |
| Type | Liquid cooled, vertical in-line, two cycle, three cylinder diesel |
| Displacement | 159.3 cubic in. |
| Horsepower | 103 HP at 2,800 RPM |
| Torque | 217 lbs-ft. at 1,500 RPM |
| Firing order | 1-3-2 |
| Type | Manual shift |
|---|---|
| Speeds | Four forward, one reverse |
| Synchromesh shift | 2nd, 3rd, 4th gears |
| 1st gear ratio | 7.06:1 |
| 2nd gear ratio | 3.58:1 |
| 3rd gear ratio | 1.71:1 |
| 4th gear ratio | 1.00:1 |
| Reverse gear ratio | 6.78:1 |
| Lubricant capacity | 5.5 pints |
| Ranges | High - low |
|---|---|
| High ratio | 1:1 |
| Low ratio | 1.79:1 |
| Torque rating | 2,500 lbs-ft. |
| Lubricant capacity | 4.5 pints |
| Type | Dual pack limited slip |
|---|---|
| Ratio | 5.57:1 |
| Lubricant capacity | 4 pints |
| Voltage | 24 VDC |
|---|---|
| Amperage | 60 A |
| Battery type | 6TN, 12 V, 100 AH |
| Battery quantity | two, series connected |
| Alternator | 24 VAC 60A |
| Capacity | 40 gallons (2 tanks, 20 gallons each) |
|---|---|
| Recommended fuel | Diesel VV-F-800 Jet MIL-J-5624 CITE MIL-F-45121A |
| Capacity | 19 quarts |
|---|---|
| Normal operating temperature | 160-200°F |
| Normal operating pressure | 7-14 PSI (MAX) |
| Type | Mechanical front and rear, simultaneously operated |
|---|---|
| Steering ratio | 24:1 |
| Turning radius | 29 feet |
| Front and rear | Independent coil springs at each wheel |
|---|---|
| Center | Single leaf spring and swing axle |
| Type | Hydraulic, internal expanding, sealed drum Duo-servo master cylinder |
|---|---|
| Air pressurization | 5 PSI |
| Type | Electrically operated |
|---|---|
| Rating | 54 GPM at 27.5 volts |
| Roll at center axle | +/- 15° |
|---|---|
| Roll at rear axle | +/- 30° |
| Pitch at rear axle | +/- 40° |
| Wall climb (vertical) | 18 in. |
| Angle of approach | 62° |
| Angle of departure | 45° |
| Hump angle | 140° |
| Type | 11:00x18 NDCC, tubeless, 6 ply rated |
|---|---|
| Highway pressure | 22 PSI |
| Cross-country pressure | 18 PSI |
| Snow pressure | 12 PSI |