Cub Cadet Challenger 550, Руководство по обслуживанию

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7‐6
Engine Management System
•
In case of plugging of injector follow the injector cleaning procedure mentioned in
the next section.
6) Cleaning Procedure
•
Electrically disable the fuel pump by removing the fuel pump connection.
• Relieve the fuel pressure in the system and disconnect the fuel connection at the
injector. Plug the fuel feed line.
•
Injector cleaner with the specific ratio of the cleaner and gasoline to be mixed in
the Injector cleaning tank.
• Connect the injector-cleaning tank to injector in the vehicle.
• Pressurize the injector-cleaning tank to system pressure.
•
Start and idle the engine for 15- 20minutes.
•
Disconnect the injector-cleaning tank from the system and install the fuel pump
connections. Connect the fuel feed line to injector.
• Start and idle the vehicle for an additional 2 minutes to ensure the residual
injector cleaner is flushed from system.
Throttle Body Assembly (with stepper motor)
The Throttle Body Assembly is an interactive system comprised of the following
subsystems: the main casting body, bearing system, shaft and valve system, return
spring system, cable interface system, throttle position sensing system, and the bypass
air control system. The subsystems interact and support each other to provide all the
functional requirements, which are mentioned below -
• Control intake airflow
• Control idle airflow
• Sense throttle position - Provide position feedback to ECU
• Provide reactionary force to the throttle
Handling
Use care when handling or storing a throttle body assembly. Think about environment
and packaging when in storage. If the throttle body assembly is dropped or damaged
(under warranty circumstances) return the assembly with a tag that describes the
problem.