attachment 2 section i ? technical specifications commuter coach ...

3.1.2.2 SERVICE
Page 38
ATTACHMENT 2
The powerplant shall be arranged so that accessibility for all routine maintenance is assured. No special
tools, other than dollies and hoists shall be required to remove the powerplant. The powerplant shall be
mounted on a cradle which can be slid into and out of the coach. Two mechanics shall be able to
remove, replace and prepare the engine and transmission assembly for service in less than 25 total
combined man-hours.
The muffler, exhaust system, air cleaner, air compressor, starter, turbocharger, alternator, radiator,
including charge air circuit, all accessories, and any other components requiring service or replacement
shall be installed in or above the engine compartment.
The turbocharger, alternator, air compressor, and starter shall be replaceable without dismounting or
removing other coach parts and without gaining access through the coach interior.
The cooling system filler caps shall be hinged to the filler neck and be held closed with spring pressure
or positive locks. The transmission filler tube shall employ a combination dipstick and cap and shall be
the minimum length permissible to discourage daily fluid checking. All fluid fill locations shall be
properly labeled to help ensure correct fluid is added and all shall be easily accessible with standard
funnels, pour spouts, and automatic dispensing equipment. All lubricant sumps shall be fitted with
magnetic-type, external, hex head, drain plugs of a standard size except for the transmission which uses
a recessed square socket type plug. The powerplant shall be equipped with provisions for displaying
engine and transmission data.
The engine and transmission shall be equipped with sufficient heavy-duty fluid filters for efficient
operation and to protect the engine and transmission between scheduled filter changes. To the extent
practicable, the filters shall be of the spin-on, disposable type with the exception of the engine which
shall have a fuel pro 382 without heater in lieu of dual fuel filters. All filters shall be easily accessible
and the filter bases shall be plumbed in a manner so as to assure correct reinstallation. Flexible lines
shall be teflon hoses with braided stainless steel jackets except in applications where premium hoses are
required and shall have standard SAE or JIC brass or steel, reusable, swivel end fittings. Hoses shall be
individually supported and shall not touch one another or any part of the coach.
3.1.2.3 AIR CLEANER
The air cleaner shall be a dry type, be horizontally mounted, and be equipped with a pre cleaner system.
Airflow through the filter element shall be from the outside in. To service the filter shall take less than
5 minutes, disconnecting an engine air intake duct, air compressor intake duct, or filter housing shall
not be necessary. The access cover of the air filter assembly shall be retained to the filter housing with
a single wing nut. A Filter Minder air filter restriction indicator, part #1875-325, manufactured by
Engineered Products Co. shall be provided and calibrated to 25 inches of water/vacuum.
3.1.2.4 ACCESSORIES
These accessories shall be unit mounted for quick removal and repair. These accessories shall be driven
at speeds sufficient to assure adequate system performance during extended periods of operation. The