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#1 |
Post Whore
![]() Join Date: Aug 2014
Location: Sacramento, CA
Posts: 10,832
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Re: Restoring Rusty
after raising the rear end of the truck sky high to prevent any seapage, we snuck up on the seal and in no time she was out
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#2 |
Post Whore
![]() Join Date: Aug 2014
Location: Sacramento, CA
Posts: 10,832
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Re: Restoring Rusty
not exactly mangle free but we don't care it's gettin replaced anyway, plus its been in there for over 30 years
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#3 |
Post Whore
![]() Join Date: Aug 2014
Location: Sacramento, CA
Posts: 10,832
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Re: Restoring Rusty
four dollars and thirty one cents later we were the proud owners of a brand new replacement seal part number 15041 made in Mexico
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#4 |
Post Whore
![]() Join Date: Aug 2014
Location: Sacramento, CA
Posts: 10,832
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Re: Restoring Rusty
hold still for a comparison shot, old part number 15404
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#5 |
Post Whore
![]() Join Date: Aug 2014
Location: Sacramento, CA
Posts: 10,832
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Re: Restoring Rusty
of note is this keep things tighty thighty spring that hides inside the metal housing and clasps the rubber seal tight, present on both seals the old one and the new one, I yanked it off the old one to show you all
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#6 |
Post Whore
![]() Join Date: Aug 2014
Location: Sacramento, CA
Posts: 10,832
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Re: Restoring Rusty
now to the untrained eye this may look like a used clutch fork and release bearing...
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#7 |
Post Whore
![]() Join Date: Aug 2014
Location: Sacramento, CA
Posts: 10,832
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Re: Restoring Rusty
but a Certified SemiPro Shade Tree Technician CSPSTT knows exactly where we are going with this
yeah it's the perfect output shaft seal pressure inner thingie tool |
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#8 |
Post Whore
![]() Join Date: Aug 2014
Location: Sacramento, CA
Posts: 10,832
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Re: Restoring Rusty
and in what seemed like no time at all, the much lesser known Seal Team 5 had the new output shaft seal pressed in and ready for action
test drive done, and Leakage Report at 11 |
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#9 |
Registered User
Join Date: Oct 2009
Location: canton ga
Posts: 12,728
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Re: Restoring Rusty
Now we have been schooled by the Greg ,good deal .But Chevy's still seem to find a place to leak just to give us something to do.
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#10 |
Registered User
Join Date: Jan 2009
Location: Calgary, AB
Posts: 1,181
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Re: Restoring Rusty
Chevy's don't leak .. They just mark their territory.
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#11 |
Registered User
Join Date: Feb 2016
Location: Clarksville, Tn.
Posts: 183
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Re: Restoring Rusty
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#12 |
Registered User
Join Date: Apr 2014
Location: Bloomington Indiana
Posts: 1,041
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Re: Restoring Rusty
Chevy's don't lose oil. You always know exactly where it is.
__________________
Rich Weyand 1978 K10 RCSB DD. |
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#13 |
Post Whore
![]() Join Date: Aug 2014
Location: Sacramento, CA
Posts: 10,832
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Re: Restoring Rusty
hey bro how did that output shaft seal repair turn out? did it stop the leak man?
tough brake bro, tough brake! |
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#14 |
Post Whore
![]() Join Date: Aug 2014
Location: Sacramento, CA
Posts: 10,832
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Re: Restoring Rusty
well the good news is the new output shaft seal area be dry as a bone
another job that needed not be doin' done right! know what I'm a sayin' folks? ha ha |
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#15 |
Post Whore
![]() Join Date: Aug 2014
Location: Sacramento, CA
Posts: 10,832
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Re: Restoring Rusty
hey man is you even sure that's where it was a leakin' from in the first place, I mean what else have you done with that there new(er) transmission, sometimes guys replace the speedo cable and put it in just hand tight and forgit' to tighten it all the way with some TOOL, just sayin' bra, not saying that could possibly be the case here, but you know you may wanna crawl under that rig with a light and take a looksie
oh by the way try crawlin' under from the driver side, there's a bit more clearance on that side minus the gas tank and all, I've noticed you put on a few pounds lately on the account of the Soft Serve Season, just sayin' bro just sayin' |
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#16 |
Registered User
Join Date: May 2015
Location: texas
Posts: 253
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Re: Restoring Rusty
well just dang it! sounds like some of my projects. fix one thing that ain't even broke.
__________________
Black 93 CCLB 3500 6.5 diesel, GV OD, TCI Ez-TCU controlled 4L80E, back on road 10/25/16 after sitting 4 years. 96 ECLB 2500, 6.5 diesel, auto, gone. |
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#17 |
Post Whore
![]() Join Date: Aug 2014
Location: Sacramento, CA
Posts: 10,832
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Re: Restoring Rusty
so the saga of the leaky transmission continues, though as you shall see the hand tight speedo cable was not the problem
after further investigation the leak does come from the speedo gear housing, so it was time to yank it out, not only to fix the leak but to see if we can replace the speedo gear with one that is a bit more accurate, as my truck says I went 6.5 miles for every 6 I actually drove (tested with another vehicle) it appears I have a 40T tooth gear, so with it being 8% off I think I need the 43 tooth one. 6.5 divided by 6 = 1.08 40 teeth times 1.08 (carry the circumfrance of the earth) gives us 43.3333333333333333333333333333333 approximately Last edited by Gregski; 05-28-2016 at 02:59 PM. |
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#18 |
Moderator
![]() Join Date: Oct 2008
Location: Wentworth, NH
Posts: 4,953
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Re: Restoring Rusty
Looks like your MY6 uses a similar speedometer gear carrier to the NP208 in my 76 & M1008 and some, but not all, TH350 & TH700R4 from that timeframe.
There's an O-Ring round the large part of the housing and a seal around the cable end of the gear. Either one can leak but usually it's the seal inside the threaded end around the gear stem. http://www.ebay.com/itm/like/1511809...&ul_noapp=true I believe part #s are as follows 12440382 SEAL, SPEEDO DRIVEN GEAR (the orange seal in your pic) 1361618 OIL SEAL RETAINER, SPEEDO DRIVEN GEAR (C-Clip in your pic) I believe it's # 326563 SEAL, SPEEDO DRIVEN GEAR SLEEVE (Black o-ring in the gear carrier) You can find the orange seal online and probably locally. The GM 43 tooth driven gear is Purple and probably around $25. More than you want to know about speedo gears in the 73-87 trucks. http://www.73-87.com/7387garage/drivetrain/speedo.htm
__________________
1959 M35A2 LDT465-1D SOLD 1967 Dodge W200 B383, NP420/NP201 SOLD 1969 Dodge Polara 500 B383, A833 SOLD 1972 Ford F250 FE390, NP435/NP205 SOLD 1976 Chevy K20, 6.5L, NV4500/NP208 SOLD 1986 M1008 CUCV SOLD 2000 GMC C2500, TD6.5L, NV4500 2005 Chevy Silverado LS 2500HD 6.0L 4L80E/NP263 2009 Impala SS LS4 V8 RTFM... GM Parts Books, GM Schematics, GM service manuals, and GM training materials...
And please let us know if and how your repairs were successful. Last edited by hatzie; 05-28-2016 at 04:34 PM. |
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#19 | |
Post Whore
![]() Join Date: Aug 2014
Location: Sacramento, CA
Posts: 10,832
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Re: Restoring Rusty
Quote:
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#20 |
Post Whore
![]() Join Date: Aug 2014
Location: Sacramento, CA
Posts: 10,832
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Re: Restoring Rusty
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#21 | |
Post Whore
![]() Join Date: Aug 2014
Location: Sacramento, CA
Posts: 10,832
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Re: Restoring Rusty
Quote:
ok so I checked and I have the blue drive gear ie 18 teef so using their formula it validates that I need the 43 tooth driven gear. 18 x 3.42 x (20168/29) = 42.76 or round up to 43 |
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#22 |
Post Whore
![]() Join Date: Aug 2014
Location: Sacramento, CA
Posts: 10,832
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Re: Restoring Rusty
so while we wait on the speedometer housing seal, o-ring and a 43T tooth driven gear I might as well tell you what else I was up to
couple days ago Pick N Pull had a 50% off sale, so I went a huntin' for a few things and scored a thermo nuclear 7 blade fan for only $12 bucks, which we will clean up, paint and mount some day, for now we just brought it up for show n tell a kind '78 happened to be the organ donor in this case |
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#23 |
Post Whore
![]() Join Date: Aug 2014
Location: Sacramento, CA
Posts: 10,832
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Re: Restoring Rusty
also got some grille brackets off the same truck in case I ever find and or decide to go to a newer style grille, this time they only wanted $6 bucks per bracket unlike that other dude who wanted $16 each or something like that in Chico, CA
these also will be cleaned up, and painted green to match the grille some day, (or maybe black, donno) shoot I just remembered I should have grabbed the center hood latch support bracket too, as it also be different than my '74, oh well |
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#24 |
Post Whore
![]() Join Date: Aug 2014
Location: Sacramento, CA
Posts: 10,832
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Re: Restoring Rusty - Front Anti Sway Bar
now I hate sitting around waitin' for parts and it is a 3 day weekend on the account of Memorial Day and all, so I decided to pull out the 1-1/16 anti sway bar I picked up a few weeks back, also a Pick N Pull score for $30 bucks, the plan is to soak it in acid/water bath to get the corrosion off, than wire wheel it, prime it, paint it cast iron color and the brackets black, and clear coat it, NICE
this one came off of a '79 GMC TOP TIP: when you go a pullin this thing, bring a battery powered drill to drill out the rivets to get the front brackets, something I did not do thinking they was bolted on Last edited by Gregski; 05-31-2016 at 07:43 PM. |
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#25 |
Post Whore
![]() Join Date: Aug 2014
Location: Sacramento, CA
Posts: 10,832
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Re: Restoring Rusty - Anti Sway Bar Brackets
I got the front anti sway bar brackets from that expensive yard in Chico, CA since I worked so hard to drill the 4 rivets out in the field, I decided to pay the $11 bucks a piece for them, I know my local yard would have charged me half that
these came off of an '84 GMC and I think it had a 1-1/8 sway bar, I don't recall if it was still on when I got to it or if someone already bought it, if I knew it was the bigger kind I would have bought it also, well depending on the Devil's price Last edited by Gregski; 05-31-2016 at 07:44 PM. |
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