MIL-T-62110 Trucks, Maintenance: With Rotating Hydraulic Derrick, 32,000 To 44,500 Gvw, 4X2, 4X4, 6X4, And 6X6, CommercialThis specification covers maintenance trucks with a rotating and telescoping hydraulic derrick. Vehicles procured under this specification are commercial items which are warranted by the manufacturer as specified in acquisition documents.

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MIL-T-62110G

(av)    Hydraulic chain saw, pole mounted, if required (see 3.14.3). (aw)   Hydraulic circular saw, pole mounted, if required (see 3.14.4). (ax)    Hydraulic impact wrench and drill, if required (see 3.14.5). (ay)    Hydraulic pruner, pole mounted, if required (see 3.14.6).

(az)    Auxiliary engine driven air compressor, if required (see 3.15). (ba)    Auxiliary engine fuel tank, if required (see 3.15.1.7).

(bb)    Rear winch, if required (see 3.16).

6.3  Performance prediction.  SAE Truck Ability Prediction Procedure computations and computations for low speed and maximum geared speed will be required by the contract.  The SAE Work Sheet Item 1 should include vehicle model number, engine model number and vehicle type, model, class and size.  Unless other conditions are cited in the contract, computations should be made for normal atmospheric pressure, normal ambient air temperature

and still, dry air.  The factors to be used in predicting truck ability (see 3.3.1.1) are established as follows for the corresponding SAE Truck Ability Prediction Procedure Tables:

Table 1                                        -   Tire Factor.  This factor must relate to the size of tires furnished by the contractor in accordance with this specification.

Table 2                                        -   Altitude Factor.  1.00

Table 3                                        -   Rolling Factor.  1.613

Table 4                                        -   Area Factor.  0.173

Table 5                                        -   Velocity Factor.  250.0

Table 6                                        -   Altitude Factor.  1.00

Table 7                                        -   Chassis Friction Horsepower.  Use applicable power

unit GVW (to nearest, higher, tabulated

1,000 pounds) and the engine rpm (to nearest

100 revolutions) which is required for 50 mph geared speed.  For GVW and engine speed beyond the range of this table, factors shall be extrapolated.

Table 8                                        -   Grade Factor.  0.75

Table 8A                                      -   Correction Factor.  Not required. Table 9                                        -   Road Factor.  0.0.

6.4  Instructions.  The requesting service should include provisions for contractor to supply physical instructions to the using service on the proper operations of the equipment, on testing overloads, and on setting the relief valves for rated capacity.

6.5  Subject term (keyword) listing.

Aerial basket                     Telescopic hydraulic derrick

Derrick, rear center           Truck, commercial

Derrick, rear corner          Truck, nontactical

Derrick, rear of cab

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