New Holland T8010 Manual page 86

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IMPORTANT: This test is most effective at an

ambient air temperature of 80° F (26.7° C) or higher.

NOTE: Reading RPM with the tachometer in bright

sunlight may be difficult; if possible, move the tractor

to more suitable lighting conditions.

Warm a cold engine to shorten the run time during

this procedure:

A. Turn the air conditioning system OFF.

B. Close the heater supply valve on the left hand

side of the engine.

C. Start the engine and operate until the

thermostat opens; then turn the engine OFF.

NOTE: The A/C system and the heater valve should

remain closed throughout this test.

Place a piece of reflective tape (1) from the Digital

Photo Tachometer Kit on the engine side of the fan

blade. Install the tape near the outside edge of the

blade, the left corner of the blade as viewed from the

left side of the tractor.

NOTE: Fan model shown at the right has seven

blades, all present tractor models have eight blades.

Apply another strip of reflective tape to the fan drive

shaft so drive shaft RPM can be read with the photo

Section 10 - Engine - Chapter 5

FAN SPEED TEST

Heater Supply Valve

Chapters

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T8020 T8030 T8040