MIL-DTL-62027K
3.2.4 Hydraulic brake line. All hydraulic brake line tubing shall be made in accordance
with SAE J527. Means for compatibility with the prime movers shall be provided (see 4.6.1).
3.3 Design and construction. Components, sub-assemblies, and assemblies shall be
fabricated and assembled into a complete dolly set in accordance with the applicable drawing
specified below, and associated documents and publications referenced herein (see 4.6.1).
Model
Drawing
M720
8736723
M832
8736921
M840
8736772
3.3.1 Safety chains. The dolly set shall be equipped with two safety chains conforming to
49 CFR 393.70 (see 4.6.2).
3.3.2 Lighting. The lighting system shall be of the 24-volt type and shall be compatible
with the 24-volt military prime mover electrical circuit. The lights shall be of the blackout and
normal lighting combination (see 4.6.2, 4.6.2.1, and 6.5).
3.3.3 Spare wheel (M720 only). A spare wheel assembly with tire mounted shall be
provided and mounted on a carrier and installed on the front end of the M720 dolly set. The
carrier shall permit removal or installation of spare wheel assembly, using only tools furnished
with the dolly set (see 4.6.2 and 4.6.2.2).
3.3.4 Adjustment mechanisms. All adjustment mechanisms shall function properly and
maintain adjustment within required settings during all dolly set operating conditions (see 4.6.2
and 4.6.2.3).
3.3.5 Controls. All electrical, mechanical, and hydraulic controls shall operate without
malfunction under all dolly set operating conditions (see 4.6.2 and 4.6.2.4).
3.3.6 Storage compartment. A storage compartment shall be mounted on the chassis and
be readily accessible for storage of tools, chains, and manuals (see 4.6.2 and 4.6.2.5).
3.3.7 Seals. When fording or operating in mud, sand, or snow, seals shall prevent the
entrance of foreign matter into the bearings. Bearing seals shall restrict the leakage of lubricants
from bearings (see 4.6.2 and 4.6.2.6).
3.3.8 Safety. The dolly set shall comply with all FMCSR and FMVSS requirements
applicable at the time of manufacture. All exposed parts which are energized electrically shall be
located, insulated, fully enclosed, or guarded so as to prevent hazards to operating or maintenance
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