A2 Series Components
M998A2 Series Common Components
Engine: *
Type: V8, 6.5L Diesel Fuel Injection, Naturally Aspirated (N.A.), EPA Compliant
Horsepower (@3,400 RPM): 160HP (120 KW)
Torque (@1,700 RPM): 290 lb.-ft. (393 N m)
Governor Type: Mechanical
Displacement: 400 cu. in. (6.5L)
Bore & Stroke: 4.06x3.83 in. (10.3x9.7 cm.)
Compression Ratio: 21.3:1
Fuel Capacity: 25gal. (94L) (useable)
Transmission:
Type: 4-speed automatic with a maximum input torque rating of 451 lb. ft. (612 N m)
Gear Ratios:
- 1st- 2.48:1
- 2nd- 1.48:1
- 3rd- 1.0:1
- 4th- .075:1
- Reverse- 2.08:1
- Torque Converter ratio- 2.1:1
Transfer Case: Gear Ratio: Low- 2.72:1; High - 1.01:1
Axles: Hypoid with a ratio of 2.73:1. Continuous torque rating: 1,281 lb. ft. (1,737 N m)
Geared Hubs: Gear ratio: 1.92:1
Frame: Steel box section with 5 crossmembers
Electrical: 12/24 volt waterproof 200 amp.
Alternator: 400 amp. alternator is available as a kit
Steering: Power-assisted with a variable ratio of 13/16:1
Differential: Torque-biasing differential
Brakes: Hydraulically actuated, four-wheel inboard mounted power disc brakes with dual reservoir master cylinder. Rotors are 12.0 in. (0.30 m.) in diameter with an effective area of 21.4 in2 (0.014 m.2) each. The parking brake manually activates the rear service brakes.
Suspension: Independent double A-frame with open-end coil springs and hydraulic shock absorbers.
Tires: 37x12.5 R16.5 LT load range "D" Radial with low profile runflat device
Wheels: 3,850 lbs. (1,747 kg.) capacity 16.5x8.25 2 piece take-apart wheels
*Not applicable to expanded capacity models
Series Applicable Performance (at GVW):
Maximum Speed: 70 mph (113 kmph)
Grade Capability: 60%
Run Flat Capability: 30 miles at 30 mph (48 km at 48 kmph)
Side Slope Capability: 40% (M1097A2 w/ shelter 30%)
Ramp Breakover Angle: 31.5°
Turning Radius (curb to curb): 25 ft. (7.62 m.)
Deep Water Fording: w/o kit- 30 in. (0.76 m.); with kit- 60in. (1.52 m.)
The performance indicated does not reflect the capability of the HMMWV, but rather reflects the performance required by the U.S. military
Transportability/Deployed:
- Air transportable in C-130 (3)**, C-130J-30 (4)**, C141E (6), C-17 (10), and C5A (15 HMMWVs)
- Slung under CH-47 (2), CH-53 (2), and UH-60 (1)**
- All models except the M997A2 Ambulance may be deployed by low velocity air-drop. (Shelters must be removed from M1097A2 variants before air-drop)
**Not to include M997 Ambulance and Armored HMMWVs.
Armament Provisions:
- MK 19 40mm Grenade Machine Gun
- .50 cal M2HB or M2HB-QCB Machine Gun
- Giat 20mm M621 Cannon
- 106mm Recoiless Rifle
- Giat 30, M781 Cannon
- GAU-19 .50 cal 3 Barrel Gattling Gun
- 7.62mm General Purpose Machine Gun
- 5.56mm General Purpose Machine Gun
- 30mm ASP®-30 Cannon
- TOW and TOW II Anti-Aircraft Missile Systems
- Milan Anti-Armor Missile System
- Prime Mover for M101, M102, and M119 Howitzers
ASP® is a registered trademark of the McDonnell Douglas Helicopter Co.
Optional Equipment:
A wide range of optional equipment is available to enhance the HMMWV's capability and/or enable it to perform specific missions. This includes:
- Dual antenna mounts
- Winch
- Deep water fording kit
- Troop seats (8 soldiers)
- Crew and cargo area canvas
- Arctic kit
- Countermine armor kit
- Hard top and doors
- Central tire inflation system (CTIS)
- Desert filtration package
- Lightweight weapons station kit
- Driveline protection kit
- Spare tire carrier
- Bulkhead spare tire kit
- Jerry can carrier
- Brush & headlight guards
- Special paints
- Metric gauges
- Pedestal weapons mount
- Air conditioning
- Infrared driving light
- Special Ops configuration
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