Linhai HY740STL 2018, Service Manual, Page: 120 / 217

CHAPTER 3 ENGINE
M750L SERVICE MANUAL 18.0
CHAPTER 3 ENGINE PAGE 3-
89
3.18.4.2 Appearance
3.18.4.3 Installation Requirements
Dynamic Torque Requirement: The sensor shall be hand into the application
and then driven by a driver with a maximum no load speed of 400 rpm or
installed to the desired torque by a hand torque wrench (5/8” hex). The
recommended installation torque is:
Minimum: 20 N · m
Maximum: 25 N · m
Static Torque Requirement: The torque required to remove the sensor from the
mating hole shall be within 200% of the installation torque mentioned above.
3.18.4.4 Operating Environment
This device is intended for use in engine coolant and air cooled applications
and shall withstand such an under hood environment.
Normal Operating Temperature: -40°C ~ 135°C (continuously).
Relative Humidity: 0 to 100% RH.
Typical Pressure: When installed at the minimum torque the sensor shall be
capable of sealing engine coolant with a positive pressure of 206.8 kPa (30 psi)
at 135°C applied to the probe tip end of the sensor.
Extreme Operating Environment: Maximum temperature excursion to 150°C for
1 hour.
3.18.4.5 Storage Environment
Storage temperature: -40°C to 120°C for an indefinite duration
Transport at altitudes to: 13,700 m for an indefinite duration
E l e c t r i c a l Enviro nmen t
Typical Voltage: The sensor circuit operates with a DC voltage reference of 5 ±
0.1 VDC.
Maximum Excitation Current: The sensor calibration shall not be affected by a
current source of less than 1 mA at all temperatures.
3.18.4.6 Sample Cleaning
When necessary the samples may be cleaned in isopropyl alcohol for one
minute with mating connectors in place and then air-dried
3.18.5
Intake AirPressure and Temperature Sensor(MAP&MAT)
3.18.5.1 Description and Working Principle
This sensor has two functions. The first is the intake manifold air temperature, it