attachment 2 section i ? technical specifications commuter coach ...
attachment 2 section i ? technical specifications commuter coach ...
attachment 2 section i ? technical specifications commuter coach ...
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Dissimilar metals must be separated by a non-conductive barrier.<br />
Barriers may consist of one of the following:<br />
a) a black elastic compound tape<br />
b) a mylar tape<br />
c) a double sided structural adhesive tape<br />
Page 10<br />
ATTACHMENT 2<br />
Where tape barriers are not feasible an appropriate sealant shall be used to provide a protective barrier<br />
and a water tight seal. This sealer must be used on all panels and assemblies that are susceptible to<br />
water leaks.<br />
2.7.6 TOWING<br />
Towing devices shall be provided and be permanently mounted on the front and rear of the <strong>coach</strong>. The<br />
<strong>coach</strong> may be towed from the front only, however must be able to recover from the rear. Recovery shall<br />
mean to move the bus into the clear so it can be hooked up and towed from the front. Lift and tow is not<br />
required.<br />
Front towing device shall withstand, without permanent deformation, tension loads up to 1.2 times the<br />
curb weight of the <strong>coach</strong> within the 20 0 of the longitudinal axis of the <strong>coach</strong>. Towing device shall<br />
accommodate a crane hook with a 1-inch throat. A minimum of two steel rear skid plates measuring<br />
approximately 15.2 x 3.3 shall be welded to the underside of the engine rails. Skid design shall be<br />
durable construction to adequately protect mechanical or other body components from damage due to<br />
the <strong>coach</strong> bottoming out.<br />
2.7.7 JACKING & HOISTING<br />
It shall be possible to safely jack up the bus, at curb weight, with an 8.5 inch-high hydraulic hand jack<br />
or a 10-ton floor jack when a tire or dual set is completely flat and the bus is on a level, hard surface.<br />
Jacking from a single point shall permit raising the bus sufficiently high enough to remove and reinstall<br />
any wheel and tire assembly. The bus shall be fitted with jacking pads for each tire/wheel locations and<br />
shall permit easy and safe jacking with the flat tire or dual set on a 3.5-inch high run-up block not wider<br />
than a single tire. The bus will withstand such jacking at any one or any combination of wheel<br />
locations without permanent deformation or damage. The bus axles or jacking plates shall<br />
accommodate the lifting pads of a post hoisting system. Jacking plates shall be approximately 2.00<br />
inches square, with a turned-down flange not less than 0.5 inch deep on each side to prevent the bus<br />
from falling off the hoist. Other pads shall be provided to support the bus on jack stands independent of<br />
the hoist<br />
2.7.9 FIRE PROTECTION<br />
The passenger and engine compartments shall be separated by a bulkhead(s) which shall, by utilization<br />
of fire resistant materials in its construction, be a firewall. This firewall shall preclude or retard<br />
propagation of an engine compartment fire into the passenger compartment. Only necessary openings<br />
shall be allowed in the firewall, and these shall be fire resistant. Any passageways for climate control
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