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#1 |
71 Cheyenne SWB Fleetside
Join Date: Jan 2005
Location: Sarnia, Ontario, Canada
Posts: 403
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hey guys,
going to do a transmission service on the 71, it has a TH350 transmissoin. noticed the pan gasket leaking pretty good since i pulled it out of storage.. tightend it up for now. but i got a kit today with the filter and gasket. looks like i might need to take out the rear transmission crossmember out to do this this? am i right? or can i get a universal in there to undo those bolts? also what is the torque spec's on the pan? and how much fluid will it take about to fill it back up? i know there will be some fluid left in the converter after i drain it. but just dont know how much i will need to fill it back up. please let me know. thanks joel
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![]() Last edited by joelboxt; 04-15-2005 at 08:22 PM. |
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#2 |
Registered User
Join Date: Apr 2004
Location: Clanton, AL
Posts: 1,253
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I was able to get to it w/o removing the cross member. I think the swivel worked on the corner ones, but on the middle ones I had to do baby turns w/ a plain old open end wrench.
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85' CUCV M1009!!! The newest addition! 6.2diesel, Th400, NP208, & only 36k miles! 70' C-10 LWB Fleetside - Looking good these days! ![]() 05' Dodge Neon 88' Winner Escape Sport 1750 - 4.3v6 94' Seadoo SP 84' Honda TRX200, bare nekkid. Just a frame & tires. Always looking for another project or any good deal! ![]() |
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#3 |
Registered User
Join Date: Jan 2001
Location: Killingworth, CT. USA
Posts: 3,378
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You will probably use 4-5 qts to refill, that's about half of what the trans/converter holds.
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1971 C10 swb stepside 350/700R4/3.73posi (retired as of 4/22/03) 1998 S10 short bed 2002 S10 Blazer 1942 Oldsmobile 1958 Massey Harris Pony 1951 Wife Killingworth, Connecticut May those who love us, love us, any of those who do not love us, may God turn their hearts. And if God is unable to turn their hearts, may he turn their ankles so we may know them by their limping. A man who works with his hands is a laborer; a man who works with his hands and his brain is a craftsman; but a man who works with his hands and his brain and his heart is an artist. |
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#4 |
its all about the +6 inches
Join Date: Jan 2001
Location: Hilliard Ohio
Posts: 2,693
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You can try a 1/4 inch drive ratchet/socket with a 6 to 8 inch extention and a swivle.
If you can't get to it, instead of removing the crossmember, unbolt the tranny mount and jack up the rear of the tranny a little. |
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#5 |
71 Cheyenne SWB Fleetside
Join Date: Jan 2005
Location: Sarnia, Ontario, Canada
Posts: 403
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do you guys know what torque tho's bolts should be?
or dont worry about it? joel
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#6 |
Registered User
Join Date: Apr 2004
Location: Clanton, AL
Posts: 1,253
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Which bolts? The tranny mount bolts, sorta tight. The trans pan bolts, not very tight at all / somewhat snug when using a 1/4" rachet. If you overtighten, you'll end up w/ a leaky pan.
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85' CUCV M1009!!! The newest addition! 6.2diesel, Th400, NP208, & only 36k miles! 70' C-10 LWB Fleetside - Looking good these days! ![]() 05' Dodge Neon 88' Winner Escape Sport 1750 - 4.3v6 94' Seadoo SP 84' Honda TRX200, bare nekkid. Just a frame & tires. Always looking for another project or any good deal! ![]() |
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#7 |
its all about the +6 inches
Join Date: Jan 2001
Location: Hilliard Ohio
Posts: 2,693
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If you can help it, don't get a cork gasket. Napa has a nice reusable one in there filter kit. The cork ones squish out when you torque it down too much.
I normally use a 1/4 inch rachet and use 2 fingers on the handle when tightening it up. Never had one leak yet. |
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#8 |
71 Cheyenne SWB Fleetside
Join Date: Jan 2005
Location: Sarnia, Ontario, Canada
Posts: 403
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i have a gasket made by felpro and its not cork.
but is there not a torque spec for the pan bolts???? also longhorn, do you know how much flid i will need to re-add? thanks joel
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#9 |
Careful, they attack...
Join Date: Aug 2001
Location: Waterford, MI, USA
Posts: 1,107
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In my Haynes manual, there is no number given. It just says tighten a little at a time until the final torque number is reached. Just make them tight, but not enough to warp the pan.
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#10 |
its all about the +6 inches
Join Date: Jan 2001
Location: Hilliard Ohio
Posts: 2,693
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it's been about a year and a half since I've filled a non overdrive tranny....I have no clue how much it'll take.
Buy 2 cases and return the 2nd case if you don't open it. |
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#11 |
71 Cheyenne SWB Fleetside
Join Date: Jan 2005
Location: Sarnia, Ontario, Canada
Posts: 403
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thanks everyone for your help.
going to get it done tomorrow.. didnt have time today. had some yard work to take care of. joel
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#12 |
Msgt USAF Ret
![]() ![]() Join Date: Jan 2005
Location: Kalamazoo, Michigan
Posts: 8,714
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My haynes manual says the pan bolts are 10 foot lbs which sounds about right and you should tighten them like Jman said a little at a time all the way around until they all get to 10. be sure to put a little fluid in the torque converter before you install the tranny. Maybe a quart if it will hold that much.
VetteVet
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VetteVet metallic green 67 stepside 74 corvette convertible 1965 Harley sportster 1995 Harley wide glide Growing old is hell, but it beats the alternative. |
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#13 |
71 Cheyenne SWB Fleetside
Join Date: Jan 2005
Location: Sarnia, Ontario, Canada
Posts: 403
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hey,
i just finished, wish i had have had the torq spec. before i started..haha wasnt on there before i started. probably should have. oh well.. time will tell if its going to leak or not. i just did it to what i thought was good.. probably more then 10 foot lbs tho. see what happens. joel
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#14 |
Registered User
Join Date: Oct 2009
Location: LBC California
Posts: 497
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Re: need to do a transmission service on my TH350
...my 68 manual says 8#s, but the lowest my torque wrench goes to is 10#s so I did 10#s. It varies from 8# to 13#s so I'm not so sure why???
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