Re: Mounting Factory A/C Compressor
Posted by HH56 On 2016/5/8 17:57:44
Depends on your compressor. There were several mounting methods and compressors used so how and where it mounted depended on whether it was true factory AC or aftermarket. Aftermarkets varied by brand.
When the 55 factory AC was introduced they used the Lehigh compressor and made a cast bracket which actually formed the crankcase bottom of the compressor. Compressor and bracket was a one piece unit designed to mount in the place of the oil filter. Once side of bracket used the original filter holes on head and other side used the thermostat and water outlet holes. Filter was relocated and bolted onto the AC bracket.
ARA units used the Lehigh compressor and factory location but the mount was different. The compressor was a single unit which bolted onto a steel plate bracket. The bracket mounted using the thermostat holes, a filter hole and a bolt on the water pump manifold. Filter was relocated similar to the factory install but had its own bracket which bolted to water manifold. The filter was turned 90 degrees to the factory install.
Mark IV units used a different compressor and bracket. Theirs mounted on the right side of engine using manifold bolts and thermostat bolts, Filter stayed in the original location.
Other mfgs used variations on those two methods. Compressors varied too but Lehigh seems to have been a popular one. It was a real hodgepod of installs.
There is a question on whether Packard went to the stand alone Lehigh and ARA type bracket in the final days. There are several who have factory units with the ARA style mount.
Photo one is the factory bracket minus the compressor. You can look in the service manual AC section and see the complete assy.
Photo two and three is the ARA bracket and oil filter mount.
Photo four is the Mark IV setup.
Photo five is a top view of the ARA bracket and probably similar to what you will need to fabricate or find if you want to use the factory location.
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When the 55 factory AC was introduced they used the Lehigh compressor and made a cast bracket which actually formed the crankcase bottom of the compressor. Compressor and bracket was a one piece unit designed to mount in the place of the oil filter. Once side of bracket used the original filter holes on head and other side used the thermostat and water outlet holes. Filter was relocated and bolted onto the AC bracket.
ARA units used the Lehigh compressor and factory location but the mount was different. The compressor was a single unit which bolted onto a steel plate bracket. The bracket mounted using the thermostat holes, a filter hole and a bolt on the water pump manifold. Filter was relocated similar to the factory install but had its own bracket which bolted to water manifold. The filter was turned 90 degrees to the factory install.
Mark IV units used a different compressor and bracket. Theirs mounted on the right side of engine using manifold bolts and thermostat bolts, Filter stayed in the original location.
Other mfgs used variations on those two methods. Compressors varied too but Lehigh seems to have been a popular one. It was a real hodgepod of installs.
There is a question on whether Packard went to the stand alone Lehigh and ARA type bracket in the final days. There are several who have factory units with the ARA style mount.
Photo one is the factory bracket minus the compressor. You can look in the service manual AC section and see the complete assy.
Photo two and three is the ARA bracket and oil filter mount.
Photo four is the Mark IV setup.
Photo five is a top view of the ARA bracket and probably similar to what you will need to fabricate or find if you want to use the factory location.
Attach file:
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