F 250 2WD Pickup V8-6.9L DSL (1985)
Injection Timing: Technical Service Bulletins
Diesel Dynamic Timing - Timing Meter Calibration
Article No. 86-9-16
DIESEL DYNAMIC TIMING (6.9L(D))
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TIMING METER CALIBRATION
LIGHT TRUCK 1983-86 E250/350, F250/350
In order to ensure a correct dynamic injection timing set, the dynamic timing meter, Tool No. 078-00100, should be calibrated periodically. The
following procedure shows the proper method for calibrating the meter.
1.
With the engine off, connect the battery clamps.
Figure 17
2.
Rotate the offset angle control knob clockwise until it stops (Figure 17). The reading on the degree scale should be -170~ or greater.
3.
Rotate the offset angle control knob counterclockwise until it stops. The reading on the degree scale should be 0~ or a positive number.
4.
If the readings are not within the specifications noted in Steps 2 and 3, send the timing meter to your local Sun Electric Service Center for service.
5.
Run the engine until normal operating temperature is maintained.
Figure 18
6.
Stop the engine and insert the magnetic pickup in the timing pointer probe hole (Figure 18). Set the timing meter to a minus (-) 20~ and install the