This instrument permits the checking of the electric revolution counter. It permits of checking engine revolutions at
600 r.p.m. i.e. :300 r.p.m. high pressure pump, 1,200 engine r.p.m. i.e. : 600 r.p.m. high pressure pump and all
the multiples of 300 r.p.m. high pressure pump. but beyond 1,200 engine r.p.m. reading becomes very difficult.
NOTE - The disc does not replace a tachometer, it will only check the speeds given above.
8 PRESSURE GAUGES
In order to carry out the various checking and adjustments on the hydraulic units on the car, the use of pressure
gauges is indispensable. As it is necessary to use accurate revolution counters to obtain accurate checking and
adjustment, so it is necessary to use accurate pressure gauges.
The pressure gauges of the test bench Z290-T possess the required accuracy. In order to preserve this accuracy, it
is necessary to use dampers (dash-pots) for protection, sold by Société FENWICK.
We advise the checking of these pressure gauges by comparison with a new pressure gauge reserved for this
purpose.
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