Hello to all,
Can someone tell me where the ac manifold gauge set connects to the low side of the AC system on my 940? Sure would appreciate it. Also does it have a sight glass for determining when the system is fully charged. Any help or pictures would be helpful showing the AC parts layout on the 1994 940.

Thanks in Advance
katman104

 

i never trust sight glasses. fully evacuate the system, leak test it at a hard vacuum, then charge it with the correct amount of refrigerant. I dunno if a 94 is a r12 or r134 system from the factory, and if r12, has yours been converted?

 

It is a 134A system from the factory, All I can find in the way of ports for hookup of gauges is 1 port close to the dryer at the firewall and do not know if this is LS of system or not. I have not been able to find a sight glass. I have never charged a system without a sight glass or port to monitor the HS of the system while charging. The AC will blow cool air but not cold air...acting like it is low of refrigerant.

 

which means there's probably a leak. which should be fixed before putting more refrigerant in it.