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

3.4.10.4 Spare wheel or rim. When specified (see 6.2), a spare wheel or rim shall be provided. When a spare tire assembly is specified (see 3.4.10.5), a spare wheel or rim shall be furnished.

3.4.10.5 Spare tire assembly. When specified (see 6.2), a spare tire assembly shall be furnished. The spare tire assembly shall include an inflated spare tire mounted on the spare wheel or rim. The spare tire shall be of the same size, tread design and load range (ply rating) as the tires furnished on the vehicle.

3.4.10.6 Tire chain clearance. Tire chain clearance in accordance with SAE J683 shall be provided. Allowance for spring deflection shall be included.

* 3.4.11 Brakes. The brakes shall conform to Federal Motor Carrier Safety Regulations

393.40 through 393.42(b), 393.43, and 393.46 through 393.52. Brake linings shall be of

nonasbestos material on single axles rated at 23,000 pounds or less and on tandem axles.

3.4.11.1 Service brakes. The vehicle shall be equipped with full-air brakes on all wheels. The braking system, complete with all necessary components, shall include:

(a) Air compressor, unloader-head type, engine driven and engine lubricated, air or water cooled, and having a capacity of not less than 7.25 cubic feet per minute (cfm) for model 4x2 and model 4x4 vehicles and 12 cfm for model 6x4 and 6x6 vehicles

(b) Air storage reservoir(s), each tank equipped with drain, and with safety and check valves between the compressor and the last reservoir tank

(d) Air control valves

(e) Air pressure gage visible to the driver

(f) Low air pressure warning, visible and audible

(g) Service brake stop lamp switch

(h) Automatic moisture ejector

* (i) For model 4x2 vehicles with rear axles rated at 23,000 pounds or less, and for 6x4 vehicles, automatic slack adjusters on cam type brakes or internal self-adjusting brakes on wedge and disc type brakes on all axles. Vehicles without this feature on one axle (rear axle rated at over 23,000 pounds) shall not have it on any axle.

3.4.11.1.1 Air dryer. A replaceable cartridge desiccant type air dryer shall be installed in the air brake system. The dryer shall have the capability of removing not less than 95 percent of the moisture in the air being dried. The dryer shall have a pre-cooler and a filter to screen out oil and solid contaminants. The dryer shall have an automatic self-cleaning cycle and a thermostatically controlled heater to prevent icing of the purge valve.