responsible for the determination and provision, within the limits of resources available to the Department of the Army for such purposes of adequate administrative support required for the operation of the Board and its commissions. The term "administrative support," as used in this am directive, is defined to include budgeting, funding, fiscal control, man power control and utilization, personnel administration, security adminis tration, space, facilities, supplies and other administrative services.ed The Secretary of the Army, as management agent, may redelegate his author ity in comection with these responsibilities within the command structure of the Department of the Army. B. The Assistant Secretary of Defense (Comptroller) shall ar range with the three Military Departments for the financing of the Board and its activities. C. The Board shall meet as frequently as is necessary with the provision that a minimm of one formal meeting be held annually. At each annual meeting the Board will review and discuss any existing problems and requirements referred to it by the Military Departments which are related to its functions, evaluate the past year's work and activities of the Board and its commissions in each particular field and plan for future work. The President will report the findings of the Board to the thres Military Departments. D. The Executive Secretary shall supervise the administrative staff of the Board, provide such other assistance and services as the Board and its commissions may require and perform such other pertinent duties as may be specified from time to time by the Secretary of the Army, as management agent, and by the Board. V. RELATIONSHIPS A. The President, the Board, its commissions, and the Executive Secretary are authorized to communicate directly with other agencies of the Department of Defense and the Military Departments and appropriate sub-divisions thereof, concerning any matter within its jurisdiction and in which there exists a mutual interest or responsibility. B. The Board and its commissions shall coordinate their efforts with all agencies within and outside the Department of Defense which have a mutual interest or responsibility with respect to any of its programs. This directive supersedes that portion of Secretary of Defense memorandum, dated 21 February 1949, Subject: "Standardisation of Preventive Medicine Practices and Procedures within the Armed Forces," which pertains to the Armed Forces Epidemiological Board and the letter from the Surgeon General of the Army to the Secretary of the Army, dated 29 November 1949, which established the Armed Forces Epidemiological Board, EXHIBIT 44 DEPARTMENT OF ARMY: SAFE OPERATION OF TRUCK, UTILITY, 4-TON, 4x4, M151 TM 9-2320-218-10 CHANGES No. 1 DEPARTMENT OF THE ARMY TECHNICAL MANUAL OPERATOR'S MANUAL TRUCK, UTILITY: -TON, 4 x 4, M151 HEADQUARTERS, DEPARTMENT OF THE ARMY TM 9-2320-218-10, 17 October 1962, is changed as follows: 21. GENERAL (Superseded) This section contains instructions for the steps necessary to operate the 1/4-ton, 4x4, utility truck under conditions of moderate temperature, humidity, and terrain. This vehicle is lighter in weight, possesses better acceleration, lower center of gravity, shorter turning radius, and is speedier than its predecessors. With its independent wheel suspension you obtain a better ride and the body remains more stable. It also has a swing arm type rear suspension system (par. 8, fig. 6) which is the only one of its type in the Army vehicle fleet. These features give the driver a different "feel" than he is accustomed to on other vehicles. Therefore, special emphasis on driver familiarization and training is necessary. For operation under other than usual conditions, refer to paragraphs 34 through 39. Refer to paragraphs 19 and 20 for information on controls and instruments. 21.1 SUSPENSION SYSTEMS (Added) The design of the suspension system must be considered when learning how to drive a vehicle. This is especially true of a small, light vehicle such as the 1/4-ton, 4x4, utility truck, M151. Lightweight vehicles in Army use, such as the M151 and 1/4-ton, 4x4, utility truck, M38A1, have different rear suspension systems. The M38A1 and earlier military vehicles use a solid axle type rear suspension. The M151 has an independent swing arm type rear suspension. Refer to figure 12.1. Each system has its own operating and driving characteristics. Each requires driver familiarization and training to assure safe operation under all conditions, by the broad range of using person. Some of the differences that can be noticed by the driver are shown below: a. Body Tilt (fig. 12.1). When turning, or driving around a curve, vehicles with a solid axle using leaf springs (M38A1) show very noticeable body tilt (side tilt). This tilt tells the driver automatically that he is beginning to reach a speed where he should exercise greater care. The independent suspension equipped vehicle (M151) gives a more level ride and when turning there is very little warning to the driver that he is reaching an unsafe speed and at the same time losing road traction. b. Steering Effect (fig. 12.1). With the solid axle type suspension the effect on steering is to under-steer into curves and drivers correct by turning into the turn. With the M151 independent rear wheel suspension the tendency is reversed. The vehicle tends to over-steer in turns and the rear end tends to steer out of the turn. The driver corrects by steering opposite from the turn. c. Ground Contact. Each system has different wheel to ground contact when cornering or turning (fig. 12.1). In the solid axle syste m the inside front wheel leaves the ground and in the independent swing arm system the inside rear wheel leaves the ground. Some driver correction is required to compensate for this because acceleration is not available at the inside rear wheel due to the axle differential action. Reduce acceleration to maintain control. Avoid this situation. d. Ride Quality and Speed. With the independent wheel suspension vehicle, ride is improved since much of the road shock is absorbed by the wheels. It is more difficult to realize at what speed you are travelling with this improved ride quality. 22. OPERATING PRECAUTIONS a. (Superseded) The speeds indicated on the instruction plate on the dash panel (fig. 9) are a guide only to the mechanical capacity of the gear ratios. Data plate speeds are not permission to drive beyond limits of safety, which are dependent on road conditions, weather, visibility, loading, and skill of drivers. n. (Added) Drivers that have not been familiarized with this vehicle should be trained in accordance with recommendations of Appendix III, o. (Added) Train yourself to watch the speedometer, especially before entering into a turn. P: (Added) Drive an unloaded vehicle at a lower speed than a loaded vehicle under the same operating conditions. g. (Added) When towing, exercise added care because a trailer will tend to exaggerate the tendency of this vehicle to oversteer. r. (Added) When passing be sure that you are sufficiently clear of the vehicle being passed before you return to the right side lane. Make a gradual return to the right lane, not a sharp turn. WARNING CAUTION: A FULL RIGHT OR FULL LEFT TURN (900) AT SPEEDS OVER 20 MPH CAN CAUSE A VEHICLE WITH EITHER 'THE SOLID AXLE (M38A1) OR THE INDIVIDUAL SUSPENSION (M151) SYSTEMS TO GO OUT OF CONTROL AND/OR TURN OVER. |