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Просмотр инструкции снегоходы Ski Doo SUMMIT 2005, страница 962
Section 03 ENGINES (2-STROKE)
Subsection 03 (593 AND 593 HO SDI ENGINES)
GENERAL
CAUTION: While performing any engine relat-
ed procedure, always make sure that the work-
ing area is clean and free from dust or particles
to reduce the risk of damaging the engine.
TROUBLESHOOTING
Before completely disassembling the engine,
check airtightness. Refer to LEAK TEST AND
ENGINE DIMENSION MEASUREMENT.
COMPONENT REMOVAL
Most engine components can be removed with
engine in vehicle such as:
– cylinder head
– piston(s)
– cylinder(s)
– rewind starter
– oil pump
– water pump
– magneto flywheel
– RAVE valve(s)
– reed valve(s).
CLEANING
Discard all gaskets and O-rings.
Clean all metal components in a non-ferrous metal
cleaner.
Scrape off carbon formation from cylinder exhaust
port, cylinder head and piston dome using a wood-
en spatula.
NOTE: The letters “AUS” (over an arrow on the
piston dome) must be visible after cleaning.
Clean the piston ring groove with a groove cleaner
tool or with a piece of broken ring.
RAVE VALVE BASIC OPERATION
593 HO SDI Engine
The RAVE valves change the height of the exhaust
port. The RAVE valve solenoid, which is controlled
by the ECM, allows positive crankcase pressure to
inflate the bellows and open the RAVE valves.
To open the RAVE valves, the ECM activates a
solenoid which directs the pressure to the valves.
1
A32C94A
1. Pressure from solenoid
1
A32C95A
34
2
1. Solenoid
2. Pressure to RAVE valves
3. Vent to throttle body
4. Pressure with check valve from crankcase
To close the RAVE valves, the ECM deactivates
the solenoid. In the closed position, the RAVE
valves are vented through the intake manifold.
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