Laser 4212 Instructions Manual Download Page 8

L A S E R   T O O L S

Cam Belt Tensioner Gauge

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25.

If at any time whilst tightening the clamp, the three LED’s
illuminate, the beeper sounds continuously and the
message ‘WARNING-OVERLOAD’ appears on the
display, stop tightening the clamp immediately. If the
load exceeds 850 Newtons or the equivalent, the
message ‘HEAD DAMAGED’ will appear. If this happens,
the instrument must be returned to the manufacturer for
head replacement and re-calibration.

26.

The display will now show the belt tension and the LED’s
and beeper will indicate if the measurement is within or
outside the limits. The yellow LED lights if the tension is
too low, and the beeper emits a single beep after each
measurement. The red LED lights if the tension is too
high, and the beeper emits a double beep. 

27.

If the tension is OK, the green LED lights and the If
necessary, adjust the belt tension until it is within limits.
Then re-check the tension as described in ‘Getting the
best results’.

28.

If it is required to change the measurement unit, target
tension or limits, the instrument can be switched from
measuring mode to set mode by pressing the ‘SET’ key,
then setting the units, tension and limits, as described
from step 7.

The belt tension between the measuring points will vary as the
engine is rotated due to differing internal loads on the
crankshaft, camshaft etc. For this reason, it is recommended
that at least four measurements are taken with the crankshaft
turned to four different positions. 

Do not forget to remove the measuring head before rotating
the crankshaft.

Always zero the instrument every ten minutes if the instrument
is being used for a long time.

Do not forget that the zeroing must be done with the
measuring head removed from the belt, and the clamp fully
unscrewed.

The instrument has the following menus, which can be
accessed at any time by pressing the ‘Menu’ key. 
When menus are selected, the menu header will appear.

MENUS, PRESS

Use the     and     keys to scroll up and down through 
the menu.

Getting the best results

Menus

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Summary of Contents for 4212

Page 1: ...4212...

Page 2: ...Instructions Cam Belt Tensioner Gauge Measure the tension on most cam belts...

Page 3: ...ay whilst adjusting the belt The selected tension limits measurement units and calibration parameters are stored in a non volatile memory and will be remembered even when the instrument is switched of...

Page 4: ...functions The I key switches on the instrument During operation of the instrument it functions as an ENTER key The SET key switches the instrument from measurement mode to setting mode It also functio...

Page 5: ...Never drop the instrument or subject it to sharp impacts 8 Never allow the instrument or measuring head to hang by the connecting cable 1 Before using the instrument for the rst time remove the batter...

Page 6: ...KILOGRAMS FORCE SEEM LOWENER UNITS NEWTONS PEISELER UNITS POUNDS FORCE 12 When the required unit appears on the screen press the key to select them The rst time the instrument is used the default unit...

Page 7: ...ll 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 instr...

Page 8: ...tension as described in Getting the best results 28 If it is required to change the measurement unit target tension or limits the instrument can be switched from measuring mode to set mode by pressing...

Page 9: ...r out of limit indication When TURN BEEPER OFF is displayed pressing the key turns the beeper off Note The beeper always sounds to con rm a key press or a fault condition When TURN LEDS ON is displaye...

Page 10: ...rs If the battery needs changing the red LED will ash and the display will show the message LOW BATTERY Note If the battery is completely drained the instrument will not operate at all The tension gau...

Page 11: ...d Up to 36mm 0 750 0 to 77 0 to 170 0 to 12 0 0 to 53 0 to 14 5 0 to 114 750 850 10 or at least 1 sig digit 5 of full scale 16 Characters LCD 3 LEDs Piezoelectric sound 5 key tactile membrane 4 x 1 5v...

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