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, Mon, 16 Jul 2007 18:06:01
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There are three circuits on the a/c. One for the compressor, one for the condensor fan (in front of radiatior) and one for the evaporator under the dash. These circuits are wired into the unfused side of the fuse box with piggy back amp connectiors, and in line fuses. The condensor fan runs through a high pressure cut in switch located near the headlight relay on the sight glass. The compressor circuit runs through a high pressure cut out switch located at the same place and through the theromostat which is the lower dial on the a/c control mounted to the left of the steering wheel. The evaporator fan is controled by the upper switch on the on the a/c control panel. When evaporator fan is switch on, the thermostat senses the air temp and if low turns on the compressor through the high pressure switch. The condensor fan circuit is always hot. The fan cuts in at about 225 lbs pressure and cuts out when if falls to 175lbs.
These units were also offered on Triumphs of the same vintage and I have seen one mounted on an MGB, but this was a poor job.
One of the best upgrades for a 95, 96 or Sonett is to replace the ten cc York upright compressor with a Sanden 505 or 508 compressor. It is very simple. A adaptor plate is avaliable for $25-$30. This must be modified by cutting off the back lower corner if you have a stock fuel pump. Then take off the York and the exentsion bracket, install the adaptor plate, bolt on the Sanden unit, obtain one 90deg fitting and it is done.
Parts are avaliable for the Compressor, the condensor, the reciever dryer the evaporator (inside fan) and the switchs.
With the conversion to a rotary Sanden compressor it no longer feels like you are towing a boat when you turn on the air.
posted by 24.123.251...
, Sat, 14 Jul 2007 20:02:34, Mon, 16 Jul 2007 18:06:01
, Sun, 14 Aug 2011 19:18:33
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