Throttle Body Assembly Description; Throttle Body Removal - Linhai T-Boss 550 Service Manual

CHAPTER 3 ENGINE
T-Boss550 SERVICE MANUAL20.0
● 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- 20 minutes.
● 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.
3.5.3 Throttle Body Assembly
3.5.3.1 Description and Working Principle
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 air flow
● Control idle air flow
● Sense throttle position - Provide position feedback to Engine Controller
● Provide reactionary force to the throttle
3.5.3.2 Appearance

3.5.3.3 Throttle Body Removal

● Disconnect negative terminal of the battery
● Disconnect electric lead wire of throttle position sensor coupler, stepper motor coupler and
MAP/MAT sensor coupler ( if this sensor is mounted on the throttle body)
● Disconnect accelerator cable from throttle body
● Remove air cleaner outlet hose and throttle body outlet hose
CHAPTER 3 ENGINE PAGE. 3- 107