Re: Stewart
Posted by HH56 On 2023/2/25 21:23:56
I suspect there is either something wrong with the valve reassembly or possibly one or both of the standoff mounts welded to the firewall have been bent slightly out of position.
The firewall hole has been the same since 51. Valves, aside from relocations of the sensing coil and cable clamp due to differences in location of the small holes in the plenum for heater hot air to blow on the sensor have also remained essentially the same for the non AC valves.
For factory air cars the hole remained the same but the valve body was offset from the horizontal layout of tubes and hole by approximately a 45 degree angle. This was necessary because of the narrower space available due to the large evaporator box that went over the air vent and heater outlet.
Here is a photo from the AC install manual showing a combination of new and old mounts. The new were needed for the tilted valve body and the evaporator box. The new ones are the brighter two of the five and are screwed to the firewall. Perhaps you could check your mounts and see if you can bend them slightly without breaking the welds. It looks to be so close a tiny bend might solve the problem.
If that didn't work you MIGHT get away with enlarging the hole slightly but the two hole rubber grommet that covers the tubes on engine side fits fairly close to the hole opening at the ends.
Attach file:
heater.jpg (80.48 KB)
The firewall hole has been the same since 51. Valves, aside from relocations of the sensing coil and cable clamp due to differences in location of the small holes in the plenum for heater hot air to blow on the sensor have also remained essentially the same for the non AC valves.
For factory air cars the hole remained the same but the valve body was offset from the horizontal layout of tubes and hole by approximately a 45 degree angle. This was necessary because of the narrower space available due to the large evaporator box that went over the air vent and heater outlet.
Here is a photo from the AC install manual showing a combination of new and old mounts. The new were needed for the tilted valve body and the evaporator box. The new ones are the brighter two of the five and are screwed to the firewall. Perhaps you could check your mounts and see if you can bend them slightly without breaking the welds. It looks to be so close a tiny bend might solve the problem.
If that didn't work you MIGHT get away with enlarging the hole slightly but the two hole rubber grommet that covers the tubes on engine side fits fairly close to the hole opening at the ends.
Attach file:
heater.jpg (80.48 KB)This Post was from: https://packardinfo.com/xoops/html/modules/newbb/viewtopic.php?post_id=254377