OK. I removed actuator #4 (Recirc. and Fresh Air doors are mechanically linked) and found it had its grommet pulled out. Not a very complicated grommet and still undamaged soft black rubber. The inner hole appears to have ribs to assure a seal that allows sliding while minimizing leakage around the 3/16” rod. So, the answer to question 4 is no. The Recirc and Now I need advice on technique to get the 0.6” OD lower flange of the grommet back through the 0.4” hole in the can. If I can find out how to do this, I will remove the other leaky grommets so I can clean and polish the areas of the cans around the grommet-hole. I’m reluctant to pop them out unless I can be confident I can re-insert the grommets without damaging their sealing surfaces. This is essentially question 6. Recommendations to polish and lube the rod and use weatherstrip cement to seal any grommet leaks were appreciated. I was not encouraged to attempt disassembly and patching. All tech tips welcomed. Rich Barber Brentwood, CA From: Rich Barber [mailto:c300@xxxxxxx] I need a little experienced advice on servicing vacuum actuators as installed on ’60-’65 Chryslers. So far, I have the heater bypass actuator out and determined to have a leak across the diaphragm and the damper/main actuator and deflector actuator leaking around the OD of the grommets that seal the rods to the cans. The main and deflector actuators do not leak across the diaphragm. All three actuators still work but present constant vacuum leaks that I hope to correct. Questions:
BTW, the ’65 Service Manual has better pictures of and instructions for this heater-A/C unit and the ’65 Parts Catalog has better descriptions and nomenclature for each of the four actuators. The ’62, ’63, ’64 & ’65 Parts Catalogs all show the same part numbers for these four actuators. Back to the garage tomorrow to check out the fourth actuator. I’m learning more than I want to know about the plumbing, linkage and wiring behind the 1964 300K dashboard. Rich Barber Brentwood, CA __._,_.___ Posted by: "Rich Barber" <c300@xxxxxxx> To send a message to this group, send an email to: Chrysler300@xxxxxxxxxxxxxxx To unsubscribe from this group, send an email to bob@xxxxxxxxxxxxx or go to https://groups.yahoo.com/neo/groups/all/manage/edit For list server instructions, go to http://www.chrysler300club.com/yahoolist/inst.htm For archives go to http://www.forwardlook.net/300-archive/search.htm#querylang __,_._,___ |