User's Manual

SmarTire Systems Inc.
Tire Monitoring System Reference Manual
6/20/2000 Page 45 of 56
This manual is under review by SmarTire – DO NOT ISSUE
1. Start by using the valve assembly with longest of the three bases (Alligator #59.0054)
2. Remove the sensor attachment screw and install the valve body (into valve hole from the
front side), washer and nut. Finger-tighten the nut until grommet is evenly seated. Make
sure the fit of the valve body/grommet and the clearance of the washer/nut with respect to
wheel.
3. Place the sensor’s spherical mounting surface against the matching surface of the valve.
Pivot the sensor housing toward the bottom of the drop-center well until both contact
pads rest on the wheel. Confirm that the sensor’s only contact with the wheel is at the two
contact pads. Note the clearance between the sensor housing and the side of the drop-
center well, including the bottom radius. This space should be approximately 0.080”
(2MM).
• If clearance is greater than 0.25” (6MM), consider using a valve with a shorter base.
• If the clearance is between 0.25” and 0.44” (6.7MM and 11.3MM), switch to the valve
assembly with the next shorter base (Alligator #59.0044).
• If the clearance is greater than 0.44” (11.3MM), then utilize the valve assembly with the
shortest base (Alligator #59.0034).
• If no additional valve selections are available, then use the strap mount sensor.
4. Repeat the above procedure to verify housing clearance at both the top and bottom of the
drop-center well.
5. Check the position of the valve attachment hole in the base of the valve body relative to
the housing adjustment slot:
• Is hole completely visible with the housing firmly seated against both the wheel and
valve?
• If the hole is not completely visible, then use the strap mount sensor.
• If the hole is completely visible with some adjustment remaining, then continue.
6. Tighten valve anchor nut to a torque value of 36 in.-lb. (4+/-0.05Nm).
• [Note: It is very important to tighten the valve anchor nut to the defined torque value
prior to tightening the sensor attachment]
7. Assemble sensor housing and attachment screw onto the base of the valve. Before
tightening, hold sensor housing snugly against both the valve and the bottom of the
wheel’s drop-center well. Tighten the sensor attachment screw to a torque of 36 in.-lb.
(4+/-0.05Nm). Visually confirm that clearance remains between the top and bottom
corners of the sensor housing and the wheel surface.