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School Bus Tires Item and Method of Inspection Point

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School Bus Tires Item and Method of Inspection Point SCHOOL BUS TIRES ITEM AND METHOD OF INSPECTION POINT VALUE AND REQUIREMENT DESCRIPTION (#) DESIGNATES POINTS TO BE DEDUCTED STANDARDS OF SAFETY AND REPAIR I. Tires: Visual Inspection of A. Front Tires (25)A.1. Recapped tires shall not 1. Recapped be used on front axle. 2. Tread Depth (Use a tread (25) 2. Front tire tread depth depth gauge) shall not be less than 4/32 inch in any two adja- a. See illustration tire cent major tread grooves wear measurement inform- at three equally spaced ation. Appendix A. intervals around the circumference of the tire. 3. Regrooved (25) 3. Any tire re-grooved or Re-cut below original groove depth when extra under-tread rubber was not provided for this purpose, or the tire is not marked "regroovable." 4. Condition = Visual (25) 4. a. Tire has unrepaired fabric defects of items a thru d break or was repaired by shall be cause for further use of a boot or blowout inspection of tire. patch. b. Tire has a bump, bulge, knot or separation. c. Tire has exposed or damaged body cords. 5. Size and Construction (25) 5. a. All tires on an axle a. Tires of a different must be of the same size size may be used, but and construction type not on the same axle. (bias ply or radial construction) tires must conform to the chassis manufacturer's gross vehicle weight rating. b. Tires of a different b. All tires on a bus must be size may not be used on of the same size and load bus after 12/31/94. range. M.S. 169.4501 M.S. 169.4502 STANDARDS OF SAFETY AND REPAIR INSPECTION MANUAL Section 1, Page 1 SCHOOL BUS TIRES ITEM AND METHOD OF INSPECTION POINT VALUE AND REQUIREMENT DESCRIPTION (#) DESIGNATES POINTS TO BE DEDUCTED STANDARDS OF SAFETY AND REPAIR I. Tires: Visual Inspection of B. Rear Tires B. 2. Tire tread depth shall not 1. Recapped tires permitted be less than 2/32 inch in on rear wheels. any two adjacent major tread grooves at three 2. Tread Depth equally spaced intervals around the circumference (Use a tread depth gauge) of tire. a. Type A, B, C, and D (25) 3. Any tire regrooved or buses. recut below original groove depth when extra b. See illustration for under-tread rubber was not additional tire wear provided for this purpose, measurement informa- or the tire is not marked tion Appendix A. "regroovable." 3. Regrooved 4. Condition = Visual defects 4. a. Tire has unrepaired fabric of items a thru d shall break or was repaired be cause for further by use of a boot or blowout inspection of tire. patch. b. Tire has a bump, bulge, knot, or separation. c. Tire has exposed or damaged body cords. 5. Size and Construction (25) 5. a. All tires on an axle a. Dual rear tires must must be of the same size be provided except Type and construction type A school buses. (bias ply or radial con- struction) tires must b. Tires of a different conform to the chassis size may be used, manufacturer's gross but not on the same vehicle weight rating. axle. STANDARDS OF SAFETY AND REPAIR INSPECTION MANUAL SECTION 1, PAGE 2 SCHOOL BUS TIRES ITEM AND METHOD OF INSPECTION POINT VALUE AND REQUIREMENT DESCRIPTION (#) DESIGNATES POINTS TO BE DEDUCTED STANDARDS OF SAFETY AND REPAIR d. Tires of a different d. All tires on a bus must be size may not be used of the same size and load on bus after 12/31/94. range. I. Tires: Visual Inspection of: C. No bus shall be driven with a C. Tires: Flat flat tire or a tire that has an audible air leak. I. Tires: Visual Inspection of: (25) D. If a spare tire is car D. Spare Tire ried, it must be suitably mounted in an accessible location outside the passenger compartment. M.S. 169.4501 M.S. 169.4502 49 CFR/570.62 .
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