Engine Size: 3.3 L
Refrigerant Type: R-12
Country of Origin: United States
I am getting ready to reassemble the a/c system in my 1990 Dodge Dynasty w 3.3 L engine. I have the original shop manual. The manual does not have the torque values for the hose blocks (to receiver, compressor and expansion Block) and the expansion block to evaporator. The torque value for the compressor to compressor mounting bracket was finally found in the engine section. Can anyone tell me what the correct torque values for the connections, shown above, are?
If this is the H block with screw fasteners, just get 'em nice and snug with a screwdriver without breaking anything. Expansion valve screws gets tightened to 100 INCH lbs and the hose fittings 200 INCH pounds. Remember, this is INCH not foot pounds. If you put 100 foot pounds on this stuff (kind of hard if you're using a screwdriver), you're going to destroy everything. These specs assume new aluminum N gaskets.
Other components, I dunno... just get them snug and remember you're dealing with aluminum.
Joe, Thanks for the info....I have an inch pound calibrated torque wrench so I am good to go....and I have new aluminum N gaskets thanks to ackits.com.
Just use "mechanics torque"
The number one A/C diagnostic tool there is- is to know how much refrigerant is in the system- this can only be done by recovering and weighing the refrigerant!!
Just a thought.... 65% of A/C failures in my 3200 car diagnostic database (GM vehicles) are due to loss of refrigerant due to a leak......
You can always find anything auto A/C from ACKits.com!
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