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5.10.
tachometeR
5.10.1.
the tachometer is used to measure engine speed. Engine speed must be known in order to :
- adjust the idling speed
- check the ignition
- adjust the timing
- check the adjustment
5.10.2.
Press the tact switch to light the rPM indicator.
5.10.3.
connect the inductive pick-up to the first cylinder.
5.10.4.
connect the red clip to the positive battery terminal (+) and the black clip to the negative battery terminal (-) (see fig.3).
5.10.5.
start the engine and read off the rpm from the display. Compare the rpm with the figure recommenced by the vehicle manufacturer.
should any deviations be found, make appropriate adjustments.
5.11.
voltmeteR
5.11.1.
the voltmeter can be used to check the battery voltage and the supply voltage to the various consumers i.e. lamps etc.
5.11.2.
testing of battery voltage under starting current load:
5.11.2.1. Disconnect the ignition by pulling the plug off the terminal 1 (1, D, RUP, -) on the ignition coil.
5.11.2.2. Press the tact switch to light the VoLt indicator.
5.11.2.3. connect the black clip to the negative battery terminal (-) and the red/green clip to the positive battery terminal (+) (see fig.5).
5.11.2.4. Have the car started by an assistant.
5.11.2.5. read off the voltage from the LED display.
imPoRtant: if a reading less than 9V is indicated have the battery checked professionally.
5.12.
Measuring the voltage at the consumers i.e. lamps etc.
5.12.1.
switch on the consumers under investigation.
5.12.2.
connect the black clip to the negative battery terminal (-) and the red clip to the positive battery terminal (+).
5.12.3.
connect the green clip to the positive terminal on the consumer.
5.12.4.
switch on the consumer and read the voltage from the LED display. if the voltage is too low, this indicates leakage through the
respective leads or connections. this is frequently indicated by heating of the connecting terminals, switches or parts of the leads.
5.12.5.
should the voltage drop be greater than that specified in your owner's manual, it is advisable to consult a garage.
© Jack sealey Limited
fig.5
Original Language Version
tL93.V2 issue 2 (H, f) 16/02/18
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