rustystud
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Any HydraMatic from 1953 on will have this servo. I am at the clinic waiting for my procedure and thought I would check in.
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303M HydraMatic rebuild
- Thread starter rustystud
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Ironically, I just got a partial donation for Piglet that will take me so far away from Washington I won't be able to smell my Aunt Ollie's bouillabaisse or Cousin Clive's fishing boat. Uncle Melvin was one of Washington's top tree fellers for a long stretch and man I miss visiting their blackberries.
Interestingly, a Deuce boosting fellow Canadian is making a partial donation with a power pak for the Piglet project. That means I have extra unknown transmissions sitting and a known rolling/ running power pak for Piglet......
I'd meet you tomorrow if this hadn't happened Saturday.
If you come up all the way up here and start loading I will give you that case........ If I need to drive for 6 hours and meet you in Little Fort, Blue River, Valemont, Jasper, Banff, Canmore or some other far away place in the mountains..........that case will cost you $11.00 Canadian.
Bring a trailer and you can have 2 blown motors/ power paks with unknown transmissions. ...........I haven't made the effort to try and separate from the engines yet but the most knowledgeable fella I know gave me tips on getting them apart so now I just need time. A gas powered, hand held, 14" chop saw with a steel blade should help drill holes in the bell housing to get at the torus bolts.
Quick landscape question on that........... after the 30 torus bolts are out does the trans just gently slip away from the engine or is it a fight?....... is there anything else holding the shaft into the trans?......asking for a friend lol.
Thinking while I type......I also have the trans out of Piglet which we know sucked up radiator fluid...... You could have that for parts.....
I will give you the sea can parts........a spare Piglet trans that must come off the Piglet motor I plan to pull real soon....( less than 10 years from now but hopefully within the month )...... You could have 2 power paks 'unknown' trans....... One belonged to Mentor Robert G and was supposed to be a good trans on a bad motor. One trans came from Little Fort and we saw some rust in the pan on that one.....so unknown..... Come and get em' and you can have them.
USMC 00-08
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This is very interesting. I have this overhaul tag on my transmission and I have been unable to find out anything on the MWOs applied to it in 1964. Would your supplemental be able to shed light on this? Would you be interested in uploading a copy of the supplemental to the TM section?
Here is the tag on my transmission. Does this mean I have the overrun valve?
rustystud
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Sorry no. You need the "C" MWO applied for that.
Yours was probably still in good condition so they left it in.
I was thinking about why they (the military powers that be) decided to finally use this servo. I believe it was because the old style parts had dried up since all the civilian HydraMatics had gone to this newer design. So why would GM still make an obsolete part like that just for a few parts sold a year.
After all the new servo fits directly in, with no modifications whatsoever, and it's a better servo.
rustystud
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Once you bust up that housing (it is a real pain, that cast iron does not like to break ! ) and remove all those fun little bolts, the transmission slides out like butter. Then your left looking at that poor housing you had to destroy and cleaning up all that spilled transmission fluid.
Oh, before you start busting the housing, remove the four large bolts connecting the transmission to the bell-housing. It won't come out but it will protect your transmission case from the shock of the beating the bell-housing is going to be taking.
rustystud
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As per our PM message, this should be a real interesting trip !
My injections went well, so I should be in less pain and able to withstand a long trip like this.
rustystud
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I forgot to mention. We have tons of Blackberries out here. Grow wild everywhere. A real nuisance plant actually. They only ripen in late August early September though. We will also have plenty of Blueberries this year. They should start ripening late July.
rustystud
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In that new 303M information manual I just got, it mentions all the specifications of the transmission including the spring pressure on the "Reduction Accumulator" .
Remember I told you to leave it alone if the springs where not broken, well here's the reason why I said that. The smaller inside spring is under 295 to 325 ft Ibs of torque. The outside larger spring is under 481 to 531 ft Ibs of torque. Add those together and that is a "lot" of pressure !
Remember when I said the one that got away from me once went flying across the shop ?
That's the reason why.
Remember I told you to leave it alone if the springs where not broken, well here's the reason why I said that. The smaller inside spring is under 295 to 325 ft Ibs of torque. The outside larger spring is under 481 to 531 ft Ibs of torque. Add those together and that is a "lot" of pressure !
Remember when I said the one that got away from me once went flying across the shop ?
That's the reason why.
USMC 00-08
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Do you know what MWO A and B were? I can find no information on the MWOs.
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Your timing is great. Both for the adventure and your accumulator explanation. I took some pics to give us some detail on parts and we can see the spring from inside. Trying to picture the assembly line in 1951 and asking the mechanic to simply squeeze this spring to 325 psi then shove it in this spring at 530 psi. The background music would have been Buddy Holly but I can't imagine the conversation.
When you explained how things can crack I took a closer look to see anything obvious. Glad you pointed that out.....nothing to see here.
rustystud
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That transmission should clean up nicely. The output carrier looks good too.
No. I only have the MWO for the "C" modifications. I don't see them changing things much though.
There was a change in the rear servo though. They went to the newer style with the "exhaust valve" built in. This valve allowed quicker dumping of the fluid in the servo. That translates into faster release of the servo. Since the rear servo is released with fluid pressure, by dumping the fluid faster you will get a quicker apply of the band to the rear drum.
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rustystud
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I talked with the people at "Gardico" gasket manufacturing today. We settled on a material to use. It has a 1700 PSI rating and a 700 degree temperature rating. It is also partially reusable. Meaning parts can be taken off and the gasket reused if it has not torn. They are getting back to me next week with a price for the eight gaskets.
OK that was weird ! I was just typing this last sentence and the website kicked me off ! I came back and the sentence was still there. Weird stuff going on here.
OK that was weird ! I was just typing this last sentence and the website kicked me off ! I came back and the sentence was still there. Weird stuff going on here.
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1944mb
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Hey Rusty, So in regard to thrust washers and bushings....could we work on coming up with part numbers to be able to advise a person on how to put a kit together? I did not see where fatsco had a bushing kit. But maybe a person needs to call in for that.
Secondly, if no one offers a rebuild kit for the front pump, could we have the pieces made to be able to rebuild them .Just a thought.
Secondly, if no one offers a rebuild kit for the front pump, could we have the pieces made to be able to rebuild them .Just a thought.
rustystud
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I know "Fatsco" sells a bushing kit. I think they sell the thrust-washers on a need basis.
As far as a kit for the front pump goes, that might be diffucult. I haven't seen the vanes for sell for several years now. We might be able to use vanes from another manufacturers pump.
The front seal is being repoped by a California company. I've bought three from them lately. Good quality, the seal is made from Silicone.