Compressor And Clutch; Operational Check - New Holland T8010 Manual

Compressor And Clutch

Operational Check

1. When functioning normally, the compressor
clutch is always grounded to the chassis, and
switched 12V is supplied by a controller-activated
relay to energize the clutch coil and engage the
compressor.
W i t h k e y s w i t c h O N , AT C s w i t c h t o " A ,"
temperature control on maximum cool, check
that clutch is engaged and the compressor is
operating.
2. Disconnect the clutch at the harness. The clutch
should disengage smoothly with little noise from
the pulley or the bear ings. Reconnect the
harness to the clutch. The clutch should engage
rapidly, and operation should be smooth and
quiet.
3. If operation is noisy, feel the compressor next to
the clutch for vibration. If the compressor is
vibrating next to the clutch and the noise
changes when the clutch disengages, the clutch
has failed. If the compressor is vibrating, the
compressor has failed. The vibrating component
is usually the source of the problem.
WARNING: Do NOT attempt to test the
!
clutch directly with your hand. Rotating parts
can cause severe personal injury.
Section 50 - Climate Control - Chapter 1
M842
50-1-33
RD02H026
RD02H026
RD02H026