Replacing HT-740 Pan Gasket

[chessie4905]

How deep is the pan you have?

[uncle ned]

Clifford  That is what I have been trying to get out of people for several weeks.

Mt mentor and builder of Huggy always said every thing in the rear took some kind of oil.

40 weight for the old detroit and 10  w 30 for the rest. Power steering and v730.

for over 20 years that is what i have always done.

Now every one want to put the new synthetic in 30 year old stuff.

12 dollars a gallon for 10w 30 is bad but the cost of the new stuff is badder.

uncle ned

[Glennman]

Update: I had the pan welded today. Actually, my nephew took it to work at a metal working shop and had it welded for me. It is holding without leaking so far, as before it would start leaking within a second or two. One of you mentioned that if the fill tube is pressed in, it will not be weldable. If it has the steel block welded to the pan that has the fill tube hole, it is weldable. Well, I have the steel block that is welded to the pan. The weld looks great and smooth. I have a new gasket on order from Luke with US Coach. By the way, the pan only had a few small aluminum flakes in it, and the magnet on the fill plug was clean. Fluid was clean, clear, and bright red, no burn smell at all. I'm looking forward to putting it all back together. I'll let everyone know how all that goes. Thanks everyone for your help and advice.

[chessie4905]

You could also use JB Weld to coat inside of weld for extra insurance.

[Glennman]

That is exactly what I plan to do (JB weld it anyway). Thank you!

[Jim Blackwood]

Better late than never? Anyway I was surprised that you were unable to weld the pan. Aluminum has few issues with tig welding. Without knowing I just sort of assumed it was an alloy that just crumbles away. But that's not what you said I think, seems like you said it was cracking. Now that's a problem you get with the wrong filler rod sometimes, like if you try to weld 6061 with a filler that is too similar, for instance if you tried to weld it without filler or tried to use a sliver of the same stock for filler. I forget which element it is but there are a couple of them that need to be added in the filler rod to keep it from cracking. A quick google search will bring up tons of information on that. It sounds like you got it worked out though. So that's good. Got it to a welder who knew what he was doing maybe?

Jim