Nat'l Highway Traffic Safety Admin., DOT § 570.62

Nat’l Highway Traffic Safety Admin., DOT § 570.62

joints, if the vehicle is so equipped. In- nected. Springs shall not be broken and sure that wheel bearings are correctly coil springs shall not be extended by adjusted. Grasp the front and rear of a spacers. Shock absorber mountings, tire and attempt to turn the tire and shackles, and U-bolts shall be securely wheel assemble left and right. If the attached. Rubber bushings shall not be free movement at the front or rear cracked, extruded out from or missing tread of the tire exceeds the applicable from suspension joints. Radius rods value shown in Table 3, there is exces- shall not be missing or damaged. sive steering linkage play. (1) Inspection procedure. Examine front and rear end suspension parts for TABLE 3. FRONT WHEEL STEERING LINKAGE the conditions indicated. FREE PLAY (b) Shock absorber condition. There shall be no oil on the shock absorber Play Nominal bead diameter or rim size (inches) (inches) housings attributable to leakage by the seal. 16 or less ...... 1⁄4 (1) Inspection procedure. Examine 16.01 through 18.00 ...... 3⁄8 18.01 or more ...... 1⁄2 shock absorbers for oil leakage from within. (c) Free turning. Steering wheels shall turn freely through the limit of travel § 570.62 Tires. in both directions. (a) Tread depth. The tread shall be (1) Inspection procedure. With the en- not less than four thirty-seconds of an gine running on a vehicle with power inch deep on each front tire of any ve- steering, or the steerable wheels ele- hicle other than a trailer and not less vated on a vehicle without power steer- than two thirty-seconds of an inch on ing, turn the steering wheel through all other tires. the limit of travel in both directions. (1) Inspection procedure. For tires Feel for binding or jamming in the with treadwear indicators, check for steering gear mechanism. indicators in any two adjacent major (d) Alignment. Toe-in or toe-out con- grooves at three locations spaced ap- dition shall not be greater than 1.5 proximately 120° apart around the cir- times the values listed in the vehicle cumference of the tire. For tires with- manufacturer’s service specification out treadwear indicators, measure the for alignment setting. tread depth with a suitable gauge or (1) Inspection procedure. Drive the ve- scale in two adjacent major grooves at hicle over a sideslip indicator or meas- 3 locations spaced approximately 120° ure with a tread gauge, and verify that apart around the circumference of the the toe-in or toe-out is not greater tire at the area of greatest wear. than 1.5 times the values listed in the (b) Type. Vehicles should be equipped vehicle manufacturer’s service speci- with tires on the same axle that are fication. matched in construction and tire size (e) Power steering system. The power designation, and dual tires shall be steering system shall not have cracked, matched for overall diameter within frayed or slipping belts, chafed or one-half inch. abrated hoses, show signs of leakage or (1) Inspection procedure. Examine vis- have insufficient fluid in the reservoir. ually. A mismatch in size and con- (1) Inspection procedure. Examine struction between tires on the same fluid reservoir, hoses and pump belts axle, or a major deviation from the size for the conditions indicated. recommended by the vehicle or tire NOTE: Inspection of the suspension system manufacturer, is a cause for rejection. must not precede the service brake perform- On a dual-tire arrangement the diame- ance test. ter of one of the duals must be within one-half inch of the other as measured § 570.61 Suspension system. by a gauge block inserted between the (a) Suspension condition. Ball joint tire and a caliper. seals shall not be cut or cracked, other (c) General condition. Tires shall be than superficial surface cracks. Ball free from chunking, bumps, knots, or joints and kingpins shall not be bent or bulges evidencing cord, ply or tread damaged. Stabilizer bars shall be con- separation from the casing.

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(1) Inspection procedure. Examine vis- 571.103 Standard No. 103; Windshield ually for the conditions indicated. defrosting and defogging systems. (d) Damage. Tire cords or belting ma- 571.104 Standard No. 104; Windshield wiping and washing systems. terials shall not be exposed, either to 571.105 Standard No. 105; Hydraulic and the naked eye or when cuts on the tire electric brake systems. are probed. Reinforcement repairs to 571.106 Standard No. 106; Brake hoses. the cord body are allowable on tires 571.107 [Reserved] other than front-mounted tires. 571.108 Standard No. 108; Lamps, reflective (1) Inspection procedure. Examine vis- devices, and associated equipment. ually for the conditions indicated, 571.109 Standard No. 109; New pneumatic and certain specialty tires. using a blunt instrument if necessary 571.110 Tire selection and rims and motor to probe cuts and abrasions. home/recreation vehicle trailer load car- (e) Special purpose tires. Tires marked rying capacity information for motor ve- ‘‘Not For Highway Use’’ or ‘‘Farm Use hicles with a GVWR of 4,536 kilograms Only’’ or other such restrictions shall (10,000 pounds) or less. not be used on any motor vehicles op- 571.111 Standard No. 111; Rearview mirrors. erating on public highways. 571.112 [Reserved] (1) Inspection procedure. Examine vis- 571.113 Standard No. 113; Hood latch system. 571.114 Standard No. 114; Theft protection. ually for tires labeled with specific re- 571.115 [Reserved] strictions. 571.116 Standard No. 116; Motor vehicle brake fluids. § 570.63 Wheel assemblies. 571.117 Standard No. 117; Retreaded pneu- (a) Wheel integrity. A tire rim, wheel matic tires. disc or spider shall have no visible 571.118 Standard No. 118; Power-operated window, partition, and roof panel sys- cracks, elongated bolt holes, or indica- tems. tions of in-service repair by welding. 571.119 Standard No. 119; New pneumatic (1) Inspection procedure. Examine vis- tires for motor vehicles with a GVWR of ually for the conditions indicated. more than 4,536 kilograms (10,000 pounds) (b) Cast wheels. Cast wheels shall not and motorcycles. be cracked or show evidence of exces- 571.120 Tire selection and rims and motor sive wear in the clamp area. home/recreation vehicle trailer load car- rying capacity information for motor ve- (1) Inspection procedure. Examine vis- hicles with a GVWR of more than 4,536 ually for the conditions indicated. kilograms (10,000 pounds). (c) Mounting. All wheel nuts shall be 571.121 Standard No. 121; Air brake systems. in place and tight. 571.122 Standard No. 122; Motorcycle brake (1) Inspection procedure. Check wheel systems. retention for the conditions indicated. 571.123 Standard No. 123; Motorcycle controls and displays. 571.124 Standard No. 124; Accelerator con- PART 571—FEDERAL MOTOR trol systems. VEHICLE SAFETY STANDARDS 571.125 Standard No. 125; Warning devices. 571.126 Standard No. 126; Electronic sta- Subpart A—General bility control systems. 571.127–571.128 [Reserved] Sec. 571.129 Standard No. 129; New non-pneu- 571.1 Scope. matic tires for passenger cars. 571.3 Definitions. 571.131 Standard No. 131; School bus pedes- 571.4 Explanation of usage. trian safety devices. 571.5 Matter incorporated by reference. 571.135 Standard No. 135; Light vehicle 571.7 Applicability. brake systems. 571.8 Effective date. 571.138 Standard No. 138; Tire pressure mon- 571.9 Separability. itoring systems. 571.10 Designation of seating positions. 571.139 Standard No. 139; New pneumatic ra- dial tires for light vehicles. Subpart B—Federal Motor Vehicle Safety 571.201 Standard No. 201; Occupant protec- Standards tion in interior impact. 571.202 Standard No. 202; Head restraints; 571.101 Standard No. 101; Controls and dis- Applicable at the manufacturers option plays. until September 1, 2009. 571.102 Standard No. 102; Transmission shift 571.202a Standard No. 202a; Head restraints; position sequence, starter interlock, and Mandatory applicability begins on Sep- transmission braking effect. tember 1, 2009.

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