Engine Speed/Timing Sensor - Clean/Inspect - Perkins 4006 TRS Gas Operation And Maintenance Manual

SEBU8190-02
Note: Perkins Engines Stafford must agree to the
maintenance schedule.
Engine Protective Devices -
Check
Alarms and shutoffs must function properly. Alarms
provide timely warning to the operator. Shutoffs help
to prevent damage to the engine. It is impossible to
determine if the engine protective devices are in
good working order during normal operation.
Malfunctions must be simulated in order to test the
engine protective devices.
A calibration check of the engine protective devices
will ensure that the alarms and shutoffs activate at
the setpoints. Ensure that the engine protective
devices are functioning properly.
NOTICE
During testing, abnormal operating conditions must
be simulated.
The tests must be performed correctly in order to pre-
vent possible damage to the engine.
To prevent damage to the engine, only authorized
service personnel or your Perkins dealer should
perform the tests.
Visual Inspection
Visually check the condition of all gauges, sensors
and wiring. Look for wiring and components that are
loose, broken, or damaged. Damaged wiring or
components should be repaired or replaced
immediately.
Engine Speed/Timing Sensor -
Clean/Inspect
Note: Ensure that all power is disconnected to the
engine before performing these procedures.
Table 23
Required Tools
Tool Part Number
Engine cranking device
A SE253
i02430590
i08259031
Qty
Part Name
1
Engine Protective Devices - Check
Engine Speed Sensor
Illustration 51
Typical example
1. Remove the connection (3). Loosen the locknut
(1).
2. Remove the sensor (2). Clean any debris from the
sensor.
3. Install Tooling (A).
4. Rotate the engine to align one teeth to the tapped
hole. By hand, install the sensor. When light
contact is made with the teeth, you must stop.
Unscrew the sensor half of one turn. This will give
a clearance of 0.5 to 0.8 mm (0.02 to 0.03 inch).
5. Tighten the locknut to a torque of 22 N·m
(195 lb in). Do not allow the sensor to rotate.
Connect the connection (3).
6. Remove Tooling (A).
Camshaft Timing Sensor
The timing sensor is a hall effect sensor that is
located in the timing case.
1. Remove the connection (3). Loosen the locknut
(1).
71
Maintenance Section
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