GMCforum
For enthusiast of the Classic GMC Motorhome built from 1973 to 1978. A web-based mirror of the GMCnet mailing list.

Home » Public Forums » GMCnet » Black List call
Black List call [message #261561] Thu, 11 September 2014 06:03 Go to next message
Ken Burton is currently offline  Ken Burton   United States
Messages: 10030
Registered: January 2004
Location: Hebron, Indiana
Karma: 10
Senior Member
This was 5 days ago but I received a telephone call last Saturday. A fellow from Ohio was passing through and stopped to visit a friend of his about 20 miles south of me. Up on backing up to leave his friends house, he lost the last of the six bolts holding the axle / half shaft or what ever you call it to the driver's side final drive flange. I have gone out in the past on two other of these Black List calls and it is ALWAYS the driver's side that looses the bolts.

T for the next call, I ordered a package of 25 of those bolts and a box of 100 washers. That was several years ago. I told the fellow, "NO PROBLEM". I have what you need. Well the answer is I have what he needed "somewhere". But after looking for over a hour I could not find them. These people always break down on late Saturday or Sundays when I can not go the local fastener place and buy what they need. I told him if he waited until Tuesday I could have 25 more of them delivered to my house or where he was located. He wanted to get going before then. So I called Blaine to get the bolt sizes and he was not home. I then called Nick at Applied and asked what size are those bolts. Then Blaine called back and verified the sizes Nick gave me.

So I started out on my hunt. 4 stores and 35 miles later I finally found enough "substitute" bolts and some blue thread locker to get him going again. That thread locker was expensive. $7.00 a small tube. I drove another then 30 miles and delivered the stuff. It was dark by then so he and his friend decided to wait until morning to replace the missing bolts. That evening when I got home there was a note to call Jim K. I called and Jim K. said "To get him going, just take three bolts out of the right side, install them in the left, and torque them all correctly." "Then fix it properly in a day or two" when you can get the proper bolts delivered by mail."

DUH !!!! Why didn't I think of that?

Then next day in the evening the fellow with the GMC called. He had installed the substitute bolts, also found the passenger side not torqued properly. He was already down the road 150 miles staying overnight at a State Park in Illinois.

On Monday I ordered 50 more of those bolts, and 100 more washers. I got them Tuesday. The GMCer who broke down wants 12 which I'll give him at the GMCMI rally. I'll take 12 for the next time someone calls my house and 12 more will go in my coach. The remaining 12 I'll throw on Blaine's table for sale at the GMCMI rally. Someday I'll find the original missing package of 25 and I'll sell them at some future rally.

As has been said many times here before, If anyone has touched, or worked on, your final drive, or CV joints, or removed those half shafts, I would go check the torque on them today. If only takes a few minutes. If any are loose I would remove them, blue thread lock them and re-torque them correctly. If they are tight then leave them alone. If the axel gets loose and flops around it can damage other stuff. Blaine had one guy he went to help that snapped the axle in half. Try finding that part locally.

I'm thinking I ought to put together a kit of this stuff and mail them out. I'm thinking about a kit of 6 or 12 new bolts, washers, a tube of blue thread locker, and a 7/16 twelve 12 point throw away 3/8 drive socket. $25.00 for 6 or $35 for a kit 12. (plus postage).


BTW,
Jim K. (Applied GMC) stocks the original GM manufactured bolts and washers and will mail them out to you if necessary.


Ken Burton - N9KB
76 Palm Beach
Hebron, Indiana

[Updated on: Thu, 11 September 2014 06:07]

Report message to a moderator

Re: Black List call [message #261563 is a reply to message #261561] Thu, 11 September 2014 06:17 Go to previous messageGo to next message
WD0AFQ is currently offline  WD0AFQ   United States
Messages: 7111
Registered: November 2004
Location: Dexter, Mo.
Karma: 207
Senior Member
I had never thought about stealing three from other side either. Good idea. If I was going to make Wisconsin. I would have you put my name on 6 of those but won't be there. Always check the drivers side before taking a trip. Put thread locker or wire them like I have mine. No telling how many times I have found the drivers side loose. If you don't replace them with new every time you take them out, they will come loose. Drilling the heads is a real chore as that metal is tough.
Dan


3 In Stainless Exhaust Headers One Ton All Discs/Reaction Arm 355 FD/Quad Bag/Alum Radiator Manny Tran/New eng. Holley EFI/10 Tire Air Monitoring System Solarized Coach/Upgraded Windows Satelite TV/On Demand Hot Water/3Way Refer
Re: Black List call [message #261566 is a reply to message #261561] Thu, 11 September 2014 06:54 Go to previous messageGo to next message
RobG is currently offline  RobG   United States
Messages: 12
Registered: May 2013
Karma: 0
Junior Member
Does anyone sell or has anyone tried finding the correct rated/sized bolts with a safety wire hole so that the bolts can be paired up and saftey wired like prop bolts? If these cannot stay tight, it might be worth it for piece of mind. Something I will consider when I get to be mobile again.
Rob


74 GMC Painted Desert? (under construction) Grand Junction, CO
Re: Black List call [message #261568 is a reply to message #261561] Thu, 11 September 2014 08:19 Go to previous messageGo to next message
mickey szilagyi is currently offline  mickey szilagyi   United States
Messages: 273
Registered: January 2013
Karma: 0
Senior Member
We just had the oil changed in our new 3.70 final drive after about 1000 miles of break-in. We had the pan removed so they could inspect the inside and they put on a new gasket which I think we got with the FD. Are these the bolts you are talking about, that hold the pan on? Thinking about this I don't think it's them but the bolts that actually hold the FD in place. What torque should be used to hold these bolts in place?

Also, called JimK and he said no limited slip additive needed. Just 75W90 gear oil.

Thanks.


Mickey 1977 Kingsley, 403, Lansing, MI

[Updated on: Thu, 11 September 2014 08:22]

Report message to a moderator

Re: [GMCnet] Black List call [message #261569 is a reply to message #261566] Thu, 11 September 2014 08:12 Go to previous messageGo to next message
Jim Miller is currently offline  Jim Miller   United States
Messages: 501
Registered: March 2008
Karma: 10
Senior Member
Safety wire is not intended to maintain torque on a fastener; it is used to prevent the LOSS of a fastener in a safety-of-life application such as in the prop bolts you refer to. Safety wire IS sufficient to keep your prop bolts in their holes long enough for you to get on the ground and take your aircraft to an A&P who can find out why you have high vibes coming from the engine and prop system.

...however we are not talking about aircraft, we are talking about the GMC.

The CV/final drive assembly is utterly dependent on clamping force between the flange faces to prevent differential motion between the two halves - and this clamping force is directly dependent on the bolt torque. Many people are reluctant to tighten these "little" bolts to the lightyear-megaton torque value that is required for proper functioning of the assembly - or they refuse to use new fasteners each time as required by the GM service manual. If these bolts loosen even a slight amount - to the point where differential motion starts to occur - then it will be only a short amount of time before the threaded holes in the driving flange will be elongated to a point where the fasteners can never again maintain proper torque on their own. You do NOT want that to happen!

Using safety wire on the bolts in question will NOT keep them tightened to the proper torque...however it WILL do a very good job of preventing you from discovering that the bolts have loosened and, as such, are allowing your driving flange's threaded holes to be battered on each acceleration/deceleration cycle of the vehicle.

If you are really worried about this situation then get under the vehicle with a torque wrench and check the torque on each bolt in each flange on a regular basis. After all, that is the approach taken in the aviation industry...

On the other hand, if your CV flanges are already battered due to improper assembly by some mechanic in the past then all bets are off.

--Jim Miller
1977 Eleganza II
1977 Royale
Hamilton, OH

On Sep 11, 2014, at 7:54 AM, Robin Geralds wrote:

> Does anyone sell or has anyone tried finding the correct rated/sized bolts with a safety wire hole so that the bolts can be paired up and saftey wired
> like prop bolts? If these cannot stay tight, it might be worth it for piece of mind. Something I will consider when I get to be mobile again.
> Rob
> --
> 74 GMC with rod saying hi
> Grand Junction, CO
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>


_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist



Jim Miller 1977 Eleganza II 1977 Royale Hamilton, OH
Re: [GMCnet] Black List call [message #261570 is a reply to message #261568] Thu, 11 September 2014 08:41 Go to previous messageGo to next message
Jim Miller is currently offline  Jim Miller   United States
Messages: 501
Registered: March 2008
Karma: 10
Senior Member
We are talking about the bolts that attach the inboard CV joints to the final drive's output flanges; these are not the bolts that you are referring to.

Torque specs for important fasteners are listed in the service manual. I do not trust my memory so I check the manual when in doubt.

--Jim

On Sep 11, 2014, at 9:19 AM, Mickey Szilagyi wrote:

> We just had the oil changed in our new 3.70 final drive after about 1000 miles of break-in. We had the pan removed so they could inspect the inside
> and they put on a new gasket which I think we got with the FD. Are these the bolts you are talking about, that hold the pan on? Thinking about this
> I don't think it's them but the bolts that actually hold the FD in place. What torque should be used to hold these bolts in place?
>
> Thanks.
> --
> Mickey
> 1977 Kingsley, 403, Lansing, MI
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>

_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist



Jim Miller 1977 Eleganza II 1977 Royale Hamilton, OH
Re: [GMCnet] Black List call [message #261572 is a reply to message #261570] Thu, 11 September 2014 09:26 Go to previous messageGo to next message
George Zhookoff is currently offline  George Zhookoff   United States
Messages: 398
Registered: December 2004
Location: Snellville, GA
Karma: 6
Senior Member
Karen's 1 ton installation write up calls for a different torque setting.

George Zhookoff


> On Sep 11, 2014, at 9:42 AM, "Jim Miller" wrote:
>
> We are talking about the bolts that attach the inboard CV joints to the final drive's output flanges; these are not the bolts that you are referring to.
>
> Torque specs for important fasteners are listed in the service manual. I do not trust my memory so I check the manual when in doubt.
>
> --Jim
>
>> On Sep 11, 2014, at 9:19 AM, Mickey Szilagyi wrote:
>>
>> We just had the oil changed in our new 3.70 final drive after about 1000 miles of break-in. We had the pan removed so they could inspect the inside
>> and they put on a new gasket which I think we got with the FD. Are these the bolts you are talking about, that hold the pan on? Thinking about this
>> I don't think it's them but the bolts that actually hold the FD in place. What torque should be used to hold these bolts in place?
>>
>> Thanks.
>> --
>> Mickey
>> 1977 Kingsley, 403, Lansing, MI
>> _______________________________________________
>> GMCnet mailing list
>> Unsubscribe or Change List Options:
>> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist

Re: [GMCnet] Black List call [message #261574 is a reply to message #261570] Thu, 11 September 2014 09:35 Go to previous messageGo to next message
James Hupy is currently offline  James Hupy   United States
Messages: 6806
Registered: May 2010
Karma: -62
Senior Member
One slight reminder. On some, but not perhaps all, GMC final drive flanges,
the drivers side requires slightly shorter bolts because of clearance
issues directly behind the flange. If you use three long bolts from the
passenger side, BE SURE TO CHECK IF THEY WILL CLEAR THE FINAL DRIVE CASE.
BAD "STUFF" HAPPENS IF YOU DO NOT.
Jim Hupy
Salem, Or.
78 GMC Royale 403 (headed for Abbotsford, BC today to pack some front and
rear wheel bearings for a fellow
gmcer, Then will turn south to the USA and hook up with Todd Sullivan and
drop off an engine gantry. Wow, busy time for us.

On Thu, Sep 11, 2014 at 9:41 AM, Jim Miller wrote:

> We are talking about the bolts that attach the inboard CV joints to the
> final drive's output flanges; these are not the bolts that you are
> referring to.
>
> Torque specs for important fasteners are listed in the service manual. I
> do not trust my memory so I check the manual when in doubt.
>
> --Jim
>
> On Sep 11, 2014, at 9:19 AM, Mickey Szilagyi wrote:
>
>> We just had the oil changed in our new 3.70 final drive after about 1000
> miles of break-in. We had the pan removed so they could inspect the inside
>> and they put on a new gasket which I think we got with the FD. Are
> these the bolts you are talking about, that hold the pan on? Thinking
> about this
>> I don't think it's them but the bolts that actually hold the FD in
> place. What torque should be used to hold these bolts in place?
>>
>> Thanks.
>> --
>> Mickey
>> 1977 Kingsley, 403, Lansing, MI
>> _______________________________________________
>> GMCnet mailing list
>> Unsubscribe or Change List Options:
>> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>>
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist

Re: [GMCnet] Black List call [message #261575 is a reply to message #261570] Thu, 11 September 2014 09:46 Go to previous messageGo to next message
mickey szilagyi is currently offline  mickey szilagyi   United States
Messages: 273
Registered: January 2013
Karma: 0
Senior Member
Are the bolts then visiable from under the coach? Under the rubber boot? Thanks for your patience, trying to learn as we go and not sound overly dumb.

Mickey 1977 Kingsley, 403, Lansing, MI
Re: [GMCnet] Black List call [message #261576 is a reply to message #261574] Thu, 11 September 2014 09:41 Go to previous messageGo to next message
dwayne jacobson[1] is currently offline  dwayne jacobson[1]   United States
Messages: 345
Registered: July 2009
Karma: 0
Senior Member
what is the torque for these?



On Thu, Sep 11, 2014 at 7:35 AM, James Hupy wrote:

> One slight reminder. On some, but not perhaps all, GMC final drive flanges,
> the drivers side requires slightly shorter bolts because of clearance
> issues directly behind the flange. If you use three long bolts from the
> passenger side, BE SURE TO CHECK IF THEY WILL CLEAR THE FINAL DRIVE CASE.
> BAD "STUFF" HAPPENS IF YOU DO NOT.
> Jim Hupy
> Salem, Or.
> 78 GMC Royale 403 (headed for Abbotsford, BC today to pack some front and
> rear wheel bearings for a fellow
> gmcer, Then will turn south to the USA and hook up with Todd Sullivan and
> drop off an engine gantry. Wow, busy time for us.
>
> On Thu, Sep 11, 2014 at 9:41 AM, Jim Miller wrote:
>
>> We are talking about the bolts that attach the inboard CV joints to the
>> final drive's output flanges; these are not the bolts that you are
>> referring to.
>>
>> Torque specs for important fasteners are listed in the service manual. I
>> do not trust my memory so I check the manual when in doubt.
>>
>> --Jim
>>
>> On Sep 11, 2014, at 9:19 AM, Mickey Szilagyi wrote:
>>
>>> We just had the oil changed in our new 3.70 final drive after about
> 1000
>> miles of break-in. We had the pan removed so they could inspect the
> inside
>>> and they put on a new gasket which I think we got with the FD. Are
>> these the bolts you are talking about, that hold the pan on? Thinking
>> about this
>>> I don't think it's them but the bolts that actually hold the FD in
>> place. What torque should be used to hold these bolts in place?
>>>
>>> Thanks.
>>> --
>>> Mickey
>>> 1977 Kingsley, 403, Lansing, MI
>>> _______________________________________________
>>> GMCnet mailing list
>>> Unsubscribe or Change List Options:
>>> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>>>
>>
>> _______________________________________________
>> GMCnet mailing list
>> Unsubscribe or Change List Options:
>> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>



--
Dwayne Jacobson
White Rock BC
Cell: 604-644-8090
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist

Re: [GMCnet] Black List call [message #261581 is a reply to message #261575] Thu, 11 September 2014 09:54 Go to previous messageGo to next message
James Hupy is currently offline  James Hupy   United States
Messages: 6806
Registered: May 2010
Karma: -62
Senior Member
Yes, they are visible. Just follow the drive axle from the wheel towards
the middle of the coach. They hold the inner Constant Velocity universal
joint onto the output flange of the final drive. The bolts secure the cv to
the flange.
Jim Hupy
Salem, OR
78 GMC Royale 403

On Thu, Sep 11, 2014 at 10:46 AM, Mickey Szilagyi
wrote:

> Are the bolts then visiable from under the coach? Under the rubber boot?
> Thanks for your patience, trying to learn as we go and not sound overly
> dumb.
> --
> Mickey
> 1977 Kingsley, 403, Lansing, MI
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist

Re: [GMCnet] Black List call [message #261582 is a reply to message #261581] Thu, 11 September 2014 09:55 Go to previous messageGo to next message
James Hupy is currently offline  James Hupy   United States
Messages: 6806
Registered: May 2010
Karma: -62
Senior Member
75 foot pounds.
Jim Hupy
Salem, OR
78 GMC Royale 403

On Thu, Sep 11, 2014 at 10:54 AM, James Hupy wrote:

> Yes, they are visible. Just follow the drive axle from the wheel towards
> the middle of the coach. They hold the inner Constant Velocity universal
> joint onto the output flange of the final drive. The bolts secure the cv to
> the flange.
> Jim Hupy
> Salem, OR
> 78 GMC Royale 403
>
> On Thu, Sep 11, 2014 at 10:46 AM, Mickey Szilagyi mickey@apex-internet.com> wrote:
>
>> Are the bolts then visiable from under the coach? Under the rubber
>> boot? Thanks for your patience, trying to learn as we go and not sound
>> overly
>> dumb.
>> --
>> Mickey
>> 1977 Kingsley, 403, Lansing, MI
>> _______________________________________________
>> GMCnet mailing list
>> Unsubscribe or Change List Options:
>> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>>
>
>
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist

Re: [GMCnet] Black List call [message #261586 is a reply to message #261576] Thu, 11 September 2014 10:21 Go to previous messageGo to next message
Ken Burton is currently offline  Ken Burton   United States
Messages: 10030
Registered: January 2004
Location: Hebron, Indiana
Karma: 10
Senior Member
dwayne jacobson[1
wrote on Thu, 11 September 2014 09:41]what is the torque for these?


75 ft-pounds which is an awful lot for a 3/8"-24 bolt. These things are harder than grade 8 with a 12 point head so they are designed to take that high torque.


Ken Burton - N9KB
76 Palm Beach
Hebron, Indiana
Re: [GMCnet] Black List call [message #261587 is a reply to message #261586] Thu, 11 September 2014 10:28 Go to previous messageGo to next message
Keith V is currently offline  Keith V   United States
Messages: 2337
Registered: March 2008
Location: Mounds View,MN
Karma: 0
Senior Member
Thanks for the reminder, I just put in a 3.70, I'll check them before heading out to Chippewa Falls!

Keith Vasilakes
Mounds View. MN
75 ex Royale GMC
ask me about MicroLevel
Cell, 763-732-3419
My427v8@hotmail.com
Re: [GMCnet] Black List call [message #261588 is a reply to message #261582] Thu, 11 September 2014 10:23 Go to previous messageGo to next message
Rob is currently offline  Rob   United States
Messages: 651
Registered: November 2013
Location: Victoria, BC
Karma: 3
Senior Member
Thanks.

I had to replace an outer CV boot last weekend and used the same value (75 ft-lb) that was listed in the manual, along with blue loctite. When George mentioned the different torque in the "Installing the One Ton Front End Version II" document - I looked that up and it says "55-58"!

So - I'm glad that Jim mentioned the 75 ft-lb value (that I used). I probably should check the torque on the driver side as well - I need to replace the partially split soft boot on that side as well... The passenger side boot was essentially completely missing!

Also - Manny mentioned that I could re-use the bolts, since they this was only the second time they had been torqued. That's what I did - so hopefully they will be OK!

BTW - my bolts required a 3/8" 12 point socket (not the 7/16" that Ken mentioned).

Rob
Victoria, BC
76 Royale - Rear Twins/Dry Bath

On 2014-09-11, at 7:55 AM, James Hupy wrote:

> 75 foot pounds.
> Jim Hupy
> Salem, OR
> 78 GMC Royale 403
>
> On Thu, Sep 11, 2014 at 10:54 AM, James Hupy wrote:
>
>> Yes, they are visible. Just follow the drive axle from the wheel towards
>> the middle of the coach. They hold the inner Constant Velocity universal
>> joint onto the output flange of the final drive. The bolts secure the cv to
>> the flange.
>> Jim Hupy
>> Salem, OR
>> 78 GMC Royale 403
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist



Rob - Victoria, BC - 76 Royale - Rear Twins/Dry Bath
Re: [GMCnet] Black List call [message #261592 is a reply to message #261588] Thu, 11 September 2014 10:47 Go to previous messageGo to next message
Ken Burton is currently offline  Ken Burton   United States
Messages: 10030
Registered: January 2004
Location: Hebron, Indiana
Karma: 10
Senior Member
Rob wrote on Thu, 11 September 2014 10:23
Thanks.

I had to replace an outer CV boot last weekend and used the same value (75 ft-lb) that was listed in the manual, along with blue loctite. When George mentioned the different torque in the "Installing the One Ton Front End Version II" document - I looked that up and it says "55-58"!

So - I'm glad that Jim mentioned the 75 ft-lb value (that I used). I probably should check the torque on the driver side as well - I need to replace the partially split soft boot on that side as well... The passenger side boot was essentially completely missing!

Also - Manny mentioned that I could re-use the bolts, since they this was only the second time they had been torqued. That's what I did - so hopefully they will be OK!

BTW - my bolts required a 3/8" 12 point socket (not the 7/16" that Ken mentioned).

Rob
Victoria, BC


That can not be. I never make mistakes.
Just ask my wife or Colonel Ken.

Now you are making me go check them for sure.


Ken Burton - N9KB
76 Palm Beach
Hebron, Indiana
Re: [GMCnet] Black List call [message #261593 is a reply to message #261574] Thu, 11 September 2014 10:48 Go to previous messageGo to next message
dan molnes is currently offline  dan molnes   United States
Messages: 166
Registered: October 2011
Karma: 1
Senior Member
Jim, do you have a extra bleeder kit with you, I could meet you at Todd's
shop if you do thanks, Dan 206 5795361

On Thu, Sep 11, 2014 at 7:35 AM, James Hupy wrote:

> One slight reminder. On some, but not perhaps all, GMC final drive flanges,
> the drivers side requires slightly shorter bolts because of clearance
> issues directly behind the flange. If you use three long bolts from the
> passenger side, BE SURE TO CHECK IF THEY WILL CLEAR THE FINAL DRIVE CASE.
> BAD "STUFF" HAPPENS IF YOU DO NOT.
> Jim Hupy
> Salem, Or.
> 78 GMC Royale 403 (headed for Abbotsford, BC today to pack some front and
> rear wheel bearings for a fellow
> gmcer, Then will turn south to the USA and hook up with Todd Sullivan and
> drop off an engine gantry. Wow, busy time for us.
>
> On Thu, Sep 11, 2014 at 9:41 AM, Jim Miller wrote:
>
>> We are talking about the bolts that attach the inboard CV joints to the
>> final drive's output flanges; these are not the bolts that you are
>> referring to.
>>
>> Torque specs for important fasteners are listed in the service manual. I
>> do not trust my memory so I check the manual when in doubt.
>>
>> --Jim
>>
>> On Sep 11, 2014, at 9:19 AM, Mickey Szilagyi wrote:
>>
>>> We just had the oil changed in our new 3.70 final drive after about
> 1000
>> miles of break-in. We had the pan removed so they could inspect the
> inside
>>> and they put on a new gasket which I think we got with the FD. Are
>> these the bolts you are talking about, that hold the pan on? Thinking
>> about this
>>> I don't think it's them but the bolts that actually hold the FD in
>> place. What torque should be used to hold these bolts in place?
>>>
>>> Thanks.
>>> --
>>> Mickey
>>> 1977 Kingsley, 403, Lansing, MI
>>> _______________________________________________
>>> GMCnet mailing list
>>> Unsubscribe or Change List Options:
>>> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>>>
>>
>> _______________________________________________
>> GMCnet mailing list
>> Unsubscribe or Change List Options:
>> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist

Re: [GMCnet] Black List call [message #261596 is a reply to message #261592] Thu, 11 September 2014 11:02 Go to previous messageGo to next message
Ken Burton is currently offline  Ken Burton   United States
Messages: 10030
Registered: January 2004
Location: Hebron, Indiana
Karma: 10
Senior Member
OK, I just tried one of the bolts and it fits a 3/8"
12 point box end just beautifully.

Who can I blame this mistake on?

I know. It was Dan's fault

Thanks for the correction

Ken B.


Ken Burton - N9KB
76 Palm Beach
Hebron, Indiana
Re: [GMCnet] Black List call [message #261598 is a reply to message #261592] Thu, 11 September 2014 11:07 Go to previous messageGo to next message
midlf is currently offline  midlf   United States
Messages: 2212
Registered: July 2007
Location: SE Wisc. (Palmyra)
Karma: 1
Senior Member
Ken Burton wrote on Thu, 11 September 2014 10:47

That can not be. I never make mistakes.
Just ask my wife or Colonel Ken.

Now you are making me go check them for sure.

The heads on the bolts I took out and the ones I put back were different sizes. One was 3/8" and the other was 7-16". Both were 12 point bolts. Don't recall which was which. I carry both sockets.


Steve Southworth
1974 Glacier TZE064V100150 (for workin on)
1975 Transmode TZE365V100394 (parts & spares)
Palmyra WI
Re: [GMCnet] Black List call [message #261600 is a reply to message #261598] Thu, 11 September 2014 11:15 Go to previous messageGo to previous message
Ken Burton is currently offline  Ken Burton   United States
Messages: 10030
Registered: January 2004
Location: Hebron, Indiana
Karma: 10
Senior Member
midlf wrote on Thu, 11 September 2014 11:07
Ken Burton wrote on Thu, 11 September 2014 10:47

That can not be. I never make mistakes.
Just ask my wife or Colonel Ken.

Now you are making me go check them for sure.

The heads on the bolts I took out and the ones I put back were different sizes. One was 3/8" and the other was 7-16". Both were 12 point bolts. Don't recall which was which. I carry both sockets.


Thanks for bailing me out on that one.
The new flange bolts that I have here are 3/8" - 12 point heads.


Ken Burton - N9KB
76 Palm Beach
Hebron, Indiana
Previous Topic: [GMCnet] GMC MM '96 January, GMC II and so on
Next Topic: Non GMC, US embassy in Oslo Norway testing out Norwegian Xmas food
Goto Forum:
  


Current Time: Fri Jul 05 15:08:50 CDT 2024

Total time taken to generate the page: 0.01120 seconds