GILLIG LOW FLOOR, Руководство по обслуживанию

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Engine
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ENGINE REMOVAL & INSTALLATION
The engine and transmission are installed longitudinally, straight in from the rear of the coach. The
combined assembly is supported by cushion, or isolator, mountings attached to the chassis frame rails.
The transmission, or engine and transmission may be removed from the coach but the engine cannot be
removed by itself. The separate transmission removal instructions are in the Transmission chapter of this
manual.
There are three support points for the engine/transmission mounting combination: one on each side of
the rear of the engine and one at the front, just in front of the rear bumper. Note: The engine is mounted
with the “rear” (flywheel) end toward the front of the coach and the “front” (vibration damper) end
toward the rear of the coach.
All of the parts which are used to mount the engine to the chassis frame are illustrated and called out in
the parts manual. A Gillig engine/transmission dolly is available for use in power plant removal and in -
stallation. There are others available in the marketplace which are adaptable to a wide variety of engine/
transmission combinations.
Engine/Transmission Removal
The electrical, hydraulic, air, coolant, drive line, air conditioning, and other disconnect points are dis-
cussed in other chapters of this manual. Refer to those sections for specifics about the particular discon -
nects. Identify and tag each item as it is disconnected to aid in identification at installation time. Perform
the following steps to remove the engine/transmission:
1. It is not necessary to pump down the air conditioning system prior to removal of the power plant,
as that system is not connected to the engine. All that is required is to remove the lines that sup -
ply coolant to the passenger heater and the V-belts from the air conditioning compressor drive.
2. Place the battery disconnect switches, located in the battery box, in the “OFF” position. As a
further precaution, disconnect the ground cable from the battery terminal.
3. Block the coach chassis to prevent it from lowering onto the engine dolly when air is exhausted
from the suspension system.
4. Exhaust air from the system.
5. Drain the cooling system.
6. Disconnect the driveline.
7. Disconnect the transmission shift linkage.
8. Remove the each rear run box bracket from the engine compartment framing. Disconnect the
Weatherpak connector from the rear run box and remove the box from the engine compartment.
9. Disconnect the air intake hump hose at the turbocharger.
10. Disconnect the exhaust pipe at the turbocharger adapter.
11. Disconnect the air compressor supply line and the governor air line.
12. Disconnect the hydraulic supply line from the hydraulic pump (located on the side of the trans-
mission).
13. Disconnect the fuel supply and return lines at the engine compartment bulkhead.
14. Disconnect the driver’s heating system coolant lines from the engine.