jwhite3242 Posted October 20, 2013 Report Posted October 20, 2013 Ok so I have 47 coupe with the original motor. It's needs a head gasket which I started this weekend. Does anybody know how to remove the temp gage sending unit as it appears to be stuck. I have backed off they gland and can't get it out. Any help will be greatly appreciated. Thank you Quote
Tom Skinner Posted October 21, 2013 Report Posted October 21, 2013 Try a spray lubricant - marinate it with PB Blaster. Wait a day or so and try wiggling it free. There is another "freeze" release agent Fastenall sells @ $20 a can "Loctite Freeze Release" the stuff works miracles. Tom Quote
RobertKB Posted October 21, 2013 Report Posted October 21, 2013 Like he said. PB Blaster will likely work over a period of time. Don't apply torch heat to loosen things as it could get the bulb too hot and damage the bulb, tube, or gauge. Take your time and force nothing as they are easily buggered up. Quote
Dodgeb4ya Posted October 21, 2013 Report Posted October 21, 2013 Pop the small rear soft plug out of the head (I use a HD sharp punch and pry it right out) it's right over the sender bulb and carefully wedge the sender bulb out. That is if magic lube does not work. Those senders are some what delicate. Bob Quote
jwhite3242 Posted October 21, 2013 Author Report Posted October 21, 2013 Thank you everyone. I have it soaking in PB we will see if it frees it up. Bob are you saying pop the freeze plug above it and tap it out from the inside? Thank you Jeff Quote
Oldguy48 Posted October 21, 2013 Report Posted October 21, 2013 Be aware that the bulb contains a small amount of ether, that is highly flammable. If you puncture it, you'll know from the smell. Wayne Quote
TodFitch Posted October 21, 2013 Report Posted October 21, 2013 Thank you everyone. I have it soaking in PB we will see if it frees it up. Bob are you saying pop the freeze plug above it and tap it out from the inside? Thank you Jeff Yes. At least that would be a method of getting the one out of my L-6 engine even though the head on mine is a bit different that on your later one. Just be careful popping out the freeze/welch/core plug as you don't want to damage the ether filled bulb. Quote
Dodgeb4ya Posted October 21, 2013 Report Posted October 21, 2013 Some pics of removal the way I do them. You can drill it and use a screw. Too slow for me. Or use a punch driven through the plug to the right of the sender bulb and pry the plug up. And another way is to cave in the plug with a 3/8" blunt drift till its loose in the head and lift the plug out with a small pick tool. The plug is loosened by deforming it (pulling the outer diameter in) and caving it in. This releases it's grip from the cylinder head counter sunk bore. Just punch to the right of the bulb. Don't use too sharp a punch or you will not cave it down ward to release it's grip! Bob Quote
jwhite3242 Posted October 21, 2013 Author Report Posted October 21, 2013 Bob thank you those pics are valuable. Thank you again for the extra effort in helping me. I will try it and get back to you. Jeff Quote
jwhite3242 Posted October 24, 2013 Author Report Posted October 24, 2013 Does anybody know where I can buy the freeze plug Bob is referring to above. Also I would like to replace all the head bolts. Looking to source those as well. Quote
Don Coatney Posted October 24, 2013 Report Posted October 24, 2013 If I recall that is a 1" plug (same as used on the front spindels) and available at most auto parts stores. Quote
TodFitch Posted October 24, 2013 Report Posted October 24, 2013 If I recall that is a 1" plug (same as used on the front spindels) and available at most auto parts stores. The one on the steering is Chrysler part 103894 which is a 1" plug that crosses to Dorman 550-012. I don't see a listing in the 36-48 parts book for the one on the head. But the '28-33 parts book seems to list that as Chrysler part 117920, a 1 1/16" diameter plug which would be a Dorman part 550-014. They changed the head in '35 so it is very possible that the '33/34 head used a different part than later cars. Quote
Don Coatney Posted October 24, 2013 Report Posted October 24, 2013 The one on the steering is Chrysler part 103894 which is a 1" plug that crosses to Dorman 550-012. I don't see a listing in the 36-48 parts book for the one on the head. But the '28-33 parts book seems to list that as Chrysler part 117920, a 1 1/16" diameter plug which would be a Dorman part 550-014. They changed the head in '35 so it is very possible that the '33/34 head used a different part than later cars. I could be wrong as my memory is not always accurate. Best thing is to measure the hole. Quote
Dodgeb4ya Posted October 24, 2013 Report Posted October 24, 2013 The head plug size is actually 1-3/16". Thats for US engines only! Available at a good auto parts supply store. Bob 1 Quote
jwhite3242 Posted October 27, 2013 Author Report Posted October 27, 2013 Picked up the freeze plug set and head bolt set from Andrew Burnbaum. Thank you everyone for your help. Jeff Quote
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