L A S E R T O O L S
Cam Belt Tensioner Gauge
7
17.
When the tension is correct, press the
key to confirm
the setting. After setting the high limit, the message
‘LOW LIMIT: 200’
will appear. This shows the currently
set low limit for the tension measurement. The low limit is
displayed and set in the same way as the high limit.
(a)
The first time the instrument is used, the default high and
low limits are 250 and 200 Newtons respectively.
(b)
The maximum value to which the high limit can be set is
the maximum value that the unit will display in the
currently selected units (see Specifications).
(c)
The maximum value to which the low limit can be set is
the high unit. The low limit cannot be set higher than the
high limit.
(d)
If the measurement unit is changed, the previously
stored high limit is erased and replaced with the
maximum value for the selected unit. After setting the
limits, the message
‘TO ZERO, PRESS
will be
displayed. At this point the measuring head should not
be clamped onto the belt, nor have any load applied to
it. Ensure that the clamping knob is fully unscrewed.
18.
Press the key to zero the instrument.
19.
Next, the message
‘MEASURE, PRESS
will be displayed.
20.
Press the
key to start the measurement.
21.
To ensure that the tension applied to the belt is correctly
distributed, turn the crankshaft until the engine is in the
position that would be appropriate for valve timing
checking/belt replacement. This is normally TDC on the
compression stroke for No.1 or No.4 cylinder.
22.
Slide the clamping hook of the measuring head over the
belt at the measurement position indicated by the vehicle
manufacturer, so that the edge of the belt touches the
two locating lugs. If no position is indicated, position the
measuring head in the centre of the longest free section
of the belt. Ensure that the clamping hook rests in the
‘trough’ between the belt teeth.
23.
Turn the tensioning knob clockwise until the flat side of
the belt contacts the anvil, and the
24.
knob is finger-tight. Do not over tighten.
NOTES:
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