Spring Clip - PREVOST H3-41 Maintenance Manual

SECTION 12: BRAKE AND AIR SYSTEM
FIGURE 50: ABS SENSOR LOCATION
Maintenance
No specific maintenance is required for sensors,
except if the sensors have to be removed for
axle servicing. In such a case, sensors should
be lubricated with special grease (Prevost
#680460) before reinstallation.
paragraph "Sensor Installation" for details.
NOTE
The resistance value, when sensors are
checked as a unit, must be equal to 1,75
kohms. To check the sensors for proper output
voltage after the sensors and toothed wheels
have been assembled to the axle, connect a
suitable AC voltmeter across the output
terminals. With the hubs rotating at 30 rpm, the
output voltages should read from 50 to 1999
mV to be acceptable.
Sensor Installation
The following procedure deals with sensor
installation on the axle wheel hubs. Read
procedure carefully before reinstalling a sensor,
as its installation must comply with operational
tolerances and specifications.
1. Apply recommended
#680460) to spring clip and sensor.
CAUTION
Use only this type of grease on the sensors.
2. Insert spring clip in the holder on hub. Make
sure the spring clip tabs are on the inboard
side of the vehicle. Push in until the clip
stops.
46 PA1621 Maintenance Manual All Series | Revised June 2020
Refer to
lubricant (Prevost
3. Push the sensor completely inside the spring
clip until it is in contact with the tooth wheel.
Ensure mounting is rigid, as it is an im-
portant criterion for adequate sensor opera-
tion.
NOTE
This installation should be of the "press fit"
type.

22.4.1 Spring clip

The spring clip retains the sensor in its mounting
bracket close to the toothed pulse wheel. The
gap between the sensor end and teeth is set
automatically by pushing the sensor in the clip
hard up against the tooth wheel, and the latter
knocks back the sensor to its adjusted position
(Figure 36).
FIGURE 51: SPRING CLIP
Maintenance
The spring clip
maintenance.
MAINTENANCE
ABS & ELECTRONIC STABILITY CONTROL
SYSTEMS
Check the proper functioning of ABS and ESC
systems at the intervals specified by the
Lubrication And Servicing Schedule in Section
24: LUBRICATION & SERVICING. To do so,
perform the "Component Test" using Bendix
ACom Diagnostics software.
Bendix ACom Diagnostics
available for download at www.bendix.com.
12161
requires no specific
software is