What Technicians Need to know – Torquing

Torquing – What Technicians Need to know

Torquing

Torquing TPMS sensors should not be skipped or considered an extra step. This ensure certain parts of the valve stem are attached to the sensor at the correct tightness.

Incorrect torque specifications can lead to air leaks or sensor detachment leading to sensor failure, a customer come back and higher service costs.

On a standard TPMS there is multiple components of the valve which requires torquing this includes –

The outer nut on aluminium clamp in valve stems.
The Screw on Rubber snap-in and Some Clamp in Valve stems.
The Valve core on all types of valve stems.

There are multiple tools on the market to help achieve the proper torque requirements.

Torquing Tips

Always Check the manufacturers recommendations on torque measurements as this varies from brand to brand.
Once you have used your torque tool reset to zero to preserve the accuracy of the tool.
Wipe down the surface of the valve and ensure it is free of Dirt and Debris before installing the screws, cores & outer nuts.
Never use Cleaners or lubricants before torquing.

HUF Installation

Installation of BH SENS IntelliSens

Tyre Pressure Sensors with metal By using the carriage bolt (e), mount the valve (c) and sensor (d) together finger tight (about two turns).

Both, valve and sensor, should still be able to adjust to different angles. Put the valve with the mounted sensor through the valve hole from the inside of the rim.

Press the sensor onto the rim and mount the torque nut (b) by hand.

Make sure to use a torque wrench with 4.0 Nm / 35 in-lbs. Ensure that the sensor is touching the rim on all sides. Only this ensures the correct mounting of the sensor. Tighten the torque nut (b) with the torque wrench in one continuous movement. Around 3 Nm / 30 in-lbs you will notice a sluggish movement until the shear collar breaks free.

Turn further until the final torque of 4.0 Nm / 35 in-lbs is achieved. Only than the sensor and the valve are correctly secured.

IntelliSens Universal Sensors must be programmed with an appropriate TPMS programming tool before use. Without programming, the IntelliSens Universal Sensors will not be functional. The programming process does not apply when using BH SENS direct fit RDE sensors.

When mounting the tyre, the traction point (m) needs to be approx. 10 cm behind the valve (k). The sensor must not be pinched between the bead and the rim. Ensure the tire bead lubricant does not cover the sensor’s pressure port.

Conduct the specified relearn procedure according to the instruction’s manual of the vehicle or the TPMS diagnostic tool. Possible relearn procedures are automatic relearn, manual relearn, relearn via OBDII interface. It is mandatory to follow the instruction of the car manufacturer. The procedure is finished after the relearn procedure is completed and the TPMS light turns off.

Torquing

https://www.intellisens.com/downloads

Schrader Installation

BEFORE INSTALLING THE EZ-SENSOR® 2.0, SCHRADER RECOMMENDS CHECKING THE RIMS FOR ACCURACY OF FIT. YOU MUST FOLLOW THE RIM MANUFACTURER’S APPROVALS DURING THIS PROCESS TO ENSURE ERROR-FREE INSTALLATION. a. The valve must not protrude beyond the outside edge of the rim b. On sensors with a variable valve angle (part no. 2200), the housing must be in contact with the rim bed when the union nut is tightened c. On sensors with a fixed valve angle, the housing must not have any contact with the rim. (Part nos 1210 & 2210) d. The sensor housing must not protrude beyond the rim flange

HOW TO REPLACE THE VALVE (Ref. 5033-10) Align the valve body with the sensor casing. Insert the valve into the sensor. Insert the metal stem into the valve. While maintaining the valve, the sensor and the stem with your hand, tighten the self-tapping screw with a T-10 screwdriver pre-set to 1.4 ±0.2 N.m until your hear the click of the tightness torque. IMPORTANT: Use only Schrader original manufactured valves.

Torquing