New Holland T8010 Manual page 1085

STEP 33
Disconnect the black ground lead. Disconnect the
red power lead from the 12V power source.
STEP 34
After each recovery, carefully open the accumulator
oil drain and drain any collected compressor oil in a
proper container.
NOTE: Small amounts of refrigerant may remain in
the accumulator and build a slight pressure. Drain the
accumulator when the inlet pressure gauge shows a
vacuum. There may or may not be any oil to drain;
this will vary from tractor to tractor. Dispose any oil
drained in a proper manner.
NOTE: If any significant amount of oil is drained,
measure and record that amount. Add that equivalent
of new SP-20 PAG oil back into the system at the end
of the evacuation process.
IMPORTANT: If the oil is suspected to be other than
SP-20 PAG oil:
1. See the flushing procedures in this Section for
complete circuit flushing to remove the oil.
2. Drain all oil from the compressor, and add back
to the compressor 8.5 oz (250 ml) of new SP-20
PAG oil.
3. Back flush the thermal expansion valve.
4. Reintroduce the fluorescent dye for R-134a in the
system.
5. Replace the receiver-drier before evacuating and
recharging the system.
6. Operate the system for 15 minutes to circulate
the new oil throughout the circuit.
Section 50 - Climate Control - Chapter 2
50-2-24
RR00E134R
RR00E137