220.127.116.11 Spare wheel assembly. Unless otherwise specified (see 6.2), a spare wheel or
rim, for the front and for the rear drive axle(s), shall be mounted on a carrier and installed in a
readily accessible location. The carrier design shall enable removal or mounting of the spare
wheel assembly using only the tools specified in 3.4.18. The carrier and spare shall not be
located in the baggage compartments. The spare wheel may be stowed in a suitable separate
18.104.22.168 Spare tire. Unless otherwise specified (see 6.2), an inflated spare tire mounted
on the spare wheel or rim shall be furnished. The spare tire shall be of the same size, tread
design, and load range as the tires in use on the front axle and the rear drive axle(s).
3.4.12 Brakes. Brakes shall conform to Federal Motor Carrier Safety Regulations 393.40
through 393.42(b) and 393.44 through 393.52.
22.214.171.124 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 13 cubic feet per minute (cfm)
(b) Air storage reservoir(s) with a total capacity of not less than 4,200 cubic inches.
Each tank shall be equipped with drain, and with safety and check valves between
compressor and last reservoir tank
(c) Foot control, suspended or treadle type
(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) Alcohol aspirator, with unbreakable transparent container
(i) Automatic moisture ejector
(j) Ping tank or discharge muffler
(k) Automatic slack adjusters.
NOTE: When an air dryer is furnished between the air compressor and the tank, (h) the
alcohol aspirator and (i) the automatic moisture ejector shall be omitted.