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[GMCnet] head bolt [message #64331] Sun, 15 November 2009 09:42 Go to next message
Gary Casey is currently offline  Gary Casey   United States
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By the way, does anyone have an extra head bolt? I thought it would be a simple thing, but it apparently is not readily available. 3 inches long with a 3/4 inch stud on top. Stud not entirely necessary as there is nothing attached to it.
Gary



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Re: [GMCnet] head bolt [message #64341 is a reply to message #64331] Sun, 15 November 2009 11:47 Go to previous messageGo to next message
Matt Colie is currently offline  Matt Colie   United States
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Gary Casey wrote on Sun, 15 November 2009 10:42

By the way, does anyone have an extra head bolt? I thought it would be a simple thing, but it apparently is not readily available. 3 inches long with a 3/4 inch stud on top. Stud not entirely necessary as there is nothing attached to it.
Gary


Gary,
If you don't need the top stud, don't get it.
Any local rebuilder should have them in stock.
Matt


Matt & Mary Colie - Chaumière -'73 Glacier 23 - Members GMCMI, GMCGL, GMCES
Electronically Controlled Quiet Engine Cooling Fan with OE Rear Drum Brakes with Applied Control Arms
SE Michigan - Near DTW - Twixt A2 and Detroit
Re: [GMCnet] head bolt [message #64351 is a reply to message #64331] Sun, 15 November 2009 13:21 Go to previous messageGo to next message
fred v is currently offline  fred v   United States
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the stud on top is supposed to take a bracket to the rear of the alternator. it keeps the alt. from twisting. the twist throws the pulley out of alignment and can cause wear to the belt.

my coach didn't have the bracket and i was loosing alt. belts like crazy.


Fred V
'77 Royale RB 455
P'cola, Fl
Re: [GMCnet] head bolt [message #64354 is a reply to message #64351] Sun, 15 November 2009 13:52 Go to previous messageGo to next message
Gary Casey is currently offline  Gary Casey   United States
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Yup, mine has that too - on the other side. That bracket looks like a redundant bracket, but it's not. I've only got one belt driving that big alternator and I've wondered if it wouldn't be easy to convert to a dual belt. Very difficult to keep it tight enough.



________________________________


the stud on top is supposed to take a bracket to the rear of the alternator. it keeps the alt. from twisting. the twist throws the pulley out of alignment and can cause wear to the belt.

my coach didn't have the bracket and i was loosing alt. belts like crazy.

--
Fred V
'77 Royale RB 455
P'cola, Fl



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Re: [GMCnet] head bolt [message #64372 is a reply to message #64354] Sun, 15 November 2009 17:39 Go to previous message
fred v is currently offline  fred v   United States
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Gary Casey wrote on Sun, 15 November 2009 13:52

Yup, mine has that too - on the other side. That bracket looks like a redundant bracket, but it's not. I've only got one belt driving that big alternator and I've wondered if it wouldn't be easy to convert to a dual belt. Very difficult to keep it tight enough.



it's easy to convert. just buy a dual pulley with or without key way slot. it just fits on the shaft and the nut holds it in place. they are available at Autozone or from GMC suppliers. i did it to my coach and i haven't had any problem since. it also eliminates the power steering belt and makes belt changing easier if you ever have to do it again.


Fred V
'77 Royale RB 455
P'cola, Fl
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