| what made this hole in the transmission? [message #68547] |
Sun, 27 December 2009 19:56  |
hertfordnc
Messages: 1164
Registered: September 2009
Location: East NC
Karma: 0
|
Senior Member |
|
|
I knew the parts coach had a transmission leak but I just thought it was a rusted line.
When we got it out today we found this:
http://tinyurl.com/yzadyuy
Any ideas?
Dave & Ellen Silva
Hertford, NC
76 Birchaven, 1-ton and other stuff
Currently planning the Great american Road Trip Summer 2021
It's gonna take a lot of Adderall to get this thing right.
[Updated on: Sun, 27 December 2009 19:56] Report message to a moderator |
|
|
|
| Re: what made this hole in the transmission? [message #68552 is a reply to message #68547] |
Sun, 27 December 2009 20:16  |
Chr$
Messages: 2690
Registered: January 2004
Location: Scottsdale, AZ
Karma: 1
|
Senior Member |
|
|
Tiny metal headed alien eating it's way out?
Seriously, looks like something inside there "moved".
-Chr$: Perpetual SmartAss
Scottsdale, AZ
77 Ex-Kingsley 455 SOLD!
2010 Nomad 24 Ft TT 390W PV W/MPPT, EV4010 and custom cargo door.
Photosite: Chrisc GMC:"It has Begun" TT: "The Other Woman"
|
|
|
|
| Re: what made this hole in the transmission? [message #68554 is a reply to message #68547] |
Sun, 27 December 2009 20:28 |
Craig Lechowicz
Messages: 541
Registered: October 2006
Location: Waterford, MI
Karma: 0
|
Senior Member |
|
|
It looks like the parking pawl mechanism is directly below the hole, so potentially, it was either jammed into park while moving at "just the right speed" or parked on a pretty steep hill where the load was enough to fail that part of the case.
I say potentially, and "just the right speed" because, at least on cars, they abuse test the heck out of parking pawls. I can recall in a brief GMI student assignment at the Toledo transmission plant (THM 350's in those days) going for test drives with the quality staff, where they would surprisingly calmly, put the transmission in park at 60 mph (part of an x many per day audit test) The pawl would ratchet very loudly until the car slowed down to maybe 10 or 15 mph and then lock in abruptly, then lock the tires briefly and stop. So, maybe if you got it just below the "ratchet" speed, and had some bad luck it would do this.
The other part of that is, maybe they did this on Toronado's and not on 11,000 pound motorhomes, so it might have been considered an acceptable risk back in the day. Someone like Manny might know more of the history specific to 425's and GMC's.
Craig Lechowicz
'77 Kingsley, Waterford, MI
|
|
|
|
|
|
| Re: what made this hole in the transmission? [message #68610 is a reply to message #68554] |
Mon, 28 December 2009 09:23 |
Bob de Kruyff
Messages: 4260
Registered: January 2004
Location: Chandler, AZ
Karma: 1
|
Senior Member |
|
|
"" I can recall in a brief GMI student assignment at the Toledo transmission plant (THM 350's in those days) going for test drives with the quality staff, where they would surprisingly calmly, put the transmission in park at 60 mph (part of an x many per day audit test) The pawl would ratchet very loudly until the car slowed down to maybe 10 or 15 mph and then lock in abruptly, then lock the tires briefly and stop. So, maybe if you got it just below the "ratchet" speed, and had some bad luck it would do this.""
GMI student!!! Same here--class of 1970.
Bob de Kruyff
78 Eleganza
Chandler, AZ
|
|
|
|
| Re: [GMCnet] what made this hole in the transmission? [message #68612 is a reply to message #68610] |
Mon, 28 December 2009 09:26 |
Steven Ferguson
Messages: 3447
Registered: May 2006
Karma: 0
|
Senior Member |
|
|
I was enrolled in the MN GMC Training Center in 1963. The Pontiac
division. Saw some pretty neat training films.
On Mon, Dec 28, 2009 at 8:23 AM, Bob de Kruyff <NEXT2POOL@aol.com> wrote:
>
>
> "" I can recall in a brief GMI student assignment at the Toledo transmission plant (THM 350's in those days) going for test drives with the quality staff, where they would surprisingly calmly, put the transmission in park at 60 mph (part of an x many per day audit test) The pawl would ratchet very loudly until the car slowed down to maybe 10 or 15 mph and then lock in abruptly, then lock the tires briefly and stop. So, maybe if you got it just below the "ratchet" speed, and had some bad luck it would do this.""
>
> GMI student!!! Same here--class of 1970.
>
> --
> Bob de Kruyff
> 78 Eleganza
> Chandler, AZ
> _______________________________________________
> GMCnet mailing list
> List Information and Subscription Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>
--
Steve Ferguson
'76 EII
Sierra Vista, AZ
Urethane bushing source
www.bdub.net/ferguson/
_______________________________________________
GMCnet mailing list
List Information and Subscription Options:
http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
|
|
|
|
| Re: [GMCnet] what made this hole in the transmission? [message #68618 is a reply to message #68612] |
Mon, 28 December 2009 09:53 |
Bob de Kruyff
Messages: 4260
Registered: January 2004
Location: Chandler, AZ
Karma: 1
|
Senior Member |
|
|
""I was enrolled in the MN GMC Training Center in 1963. The Pontiac
division. Saw some pretty neat training films.""
What a small world! I moved to Minnesota in 64 and went to highschool there before moving to Michigan.
Bob de Kruyff
78 Eleganza
Chandler, AZ
|
|
|
|
|
|
| Re: [GMCnet] what made this hole in the transmission? [message #68623 is a reply to message #68622] |
Mon, 28 December 2009 10:59 |
Bob de Kruyff
Messages: 4260
Registered: January 2004
Location: Chandler, AZ
Karma: 1
|
Senior Member |
|
|
""It is a small world. I was accepted to GMI to start in 1970. I decided to pass on starting in '70. I needed to "find myself" at least thats what I told my parents. So I went drag racing Funny Cars and Fuel Dragsters professionally.
Never did get back to that GMI deal... ummmm what if.....? ""
Another WOW ! You have to follow your dream--if it didn't feel right it probably wasn't 
Bob de Kruyff
78 Eleganza
Chandler, AZ
|
|
|
|
|
|
|
|
| Re: [GMCnet] what made this hole in the transmission? [message #68668 is a reply to message #68650] |
Mon, 28 December 2009 17:01 |
Craig Lechowicz
Messages: 541
Registered: October 2006
Location: Waterford, MI
Karma: 0
|
Senior Member |
|
|
Bob, Steve and Jeff,
It is a small world. I'm apparently a bit younger, as I was class of '82 (although I worked and did vo-tech school for 3 years before going, 53 now.) In retrospect, the 60's and 70's would have been the golden years (no women there then, though, so that made up for it a little . . .). I managed to see a lot of the ugly parts of GM's history, especially the surprise ending for me. And Jeff, I got to consider the racing vs. GMI thing also, as between the time I was accepted and when I was to enroll, the dealer I was working for got me thrown out. So, thought about going road racing (which I was doing part-time crew work with one of the dealers friends as driver). Silly me, I thought the "security" of the big auto company was a better deal than the uncertainty in racing, so I clawed my way back in. Although the last couple years haven't been good for the Nascar industry either. All-in, can't complain though, got a great education for next to no money.
Craig Lechowicz
'77 Kingsley, Waterford, MI
|
|
|
|
GMCforum
Search
Help
Register
Login
Home
at least thats what I told my parents. So I went drag racing Funny Cars and Fuel Dragsters professionally. 