Go Back   Ford Truck Enthusiasts Forums > Diesel > 1994.5 - 1997 7.3L Power Stroke Diesel
Sign in using an external account
Register Forgot Password?


1994.5 - 1997 7.3L Power Stroke Diesel SPONSORED BY:

Welcome to Ford-Trucks Forums!
Welcome to Ford-Trucks.com.

You are currently viewing our forums as a guest, which gives you limited access to view most discussions and access our other features. By joining our community you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is fast, simple and absolutely free so please, join the Ford-Trucks Forums community today!





 
Reply
 
 
 
 
LinkBack Thread Tools Search this Thread
  #16  
Old 02-10-2012, 11:37 AM
fridgeddiesel fridgeddiesel is offline
Senior User
 
Join Date: Dec 2004
Location: Gunnison, Co.
Posts: 249
fridgeddiesel is starting off with a positive reputation.
Glad this thread could help. I know this forum has been a huge help in solving problems with my truck. If I can't find a solution in the search I ask and post the solution that I came up with to help others in the same situation.
__________________
97 F250 Ext. Cab. Short Box 7.3L PSD 4X4 5-Speed, 4.10 Limited Slip, Front Receiver 8,000 lb Winch
Pyro & Boost Guages. 55W HID 5000K Headlights. Daylighter Off-Road Lights
PHP 6 Position Chip. FPR Shimmed. AIC. 203* Thermostat. Stancor GPR. FS-2500 OBFS
6637 Intake. MBRP 4" Exhaust/Gutted EBPV. Air-Lift RideControl Front Air Springs
Reply With Quote
  #17  
Old 02-10-2012, 05:30 PM
brooksbronco17's Avatar
brooksbronco17 brooksbronco17 is offline
Senior User
 
Join Date: Dec 2006
Location: Dundas, IL
Posts: 176
brooksbronco17 is starting off with a positive reputation.
Hi, I just wanted to add that a M10 x 1.5 x 80 will work too. I got it and the 100 length but the 100 didn't have enough threads going up to tighten it all the way. If you get a 100 make sure u have enough threads. Maybe not a longterm solution but will help in a pinch.
__________________
1997 Ford f-250 w/7.3 TW 4 Pos Chip, 6637 filter, 3in downpipe, Poly front bushings, Velvet ride shackles, Lost kitty,
Reply With Quote
  #18  
Old 02-11-2012, 09:57 AM
fridgeddiesel fridgeddiesel is offline
Senior User
 
Join Date: Dec 2004
Location: Gunnison, Co.
Posts: 249
fridgeddiesel is starting off with a positive reputation.
That may be true. The next size bolt I could find was a M10 x 1.5 X 70 which is NOT long enough. My original bolt had sheared off behind the first three threads in the mounting bracket - stripping out those threads. I noticed that the 100 length bolt stuck thru the back side of the tensioner just a little with no threads. I had purchased an M10 split lock washer that brought that non threaded part back into the tensioner housing. I attached the tensioner to the mounting bracket on the work bench with out the washer and it sucked up tight so I did not use the washer. Probably due to the first three threads being stripped out.

I would guess from putting the parts together from the original bolt that it was a M10 x 1.5 x 90.
__________________
97 F250 Ext. Cab. Short Box 7.3L PSD 4X4 5-Speed, 4.10 Limited Slip, Front Receiver 8,000 lb Winch
Pyro & Boost Guages. 55W HID 5000K Headlights. Daylighter Off-Road Lights
PHP 6 Position Chip. FPR Shimmed. AIC. 203* Thermostat. Stancor GPR. FS-2500 OBFS
6637 Intake. MBRP 4" Exhaust/Gutted EBPV. Air-Lift RideControl Front Air Springs
Reply With Quote
  #19  
Old 02-11-2012, 11:18 AM
brooksbronco17's Avatar
brooksbronco17 brooksbronco17 is offline
Senior User
 
Join Date: Dec 2006
Location: Dundas, IL
Posts: 176
brooksbronco17 is starting off with a positive reputation.
Quote:
Originally Posted by fridgeddiesel View Post
That may be true. The next size bolt I could find was a M10 x 1.5 X 70 which is NOT long enough. My original bolt had sheared off behind the first three threads in the mounting bracket - stripping out those threads. I noticed that the 100 length bolt stuck thru the back side of the tensioner just a little with no threads. I had purchased an M10 split lock washer that brought that non threaded part back into the tensioner housing. I attached the tensioner to the mounting bracket on the work bench with out the washer and it sucked up tight so I did not use the washer. Probably due to the first three threads being stripped out.

I would guess from putting the parts together from the original bolt that it was a M10 x 1.5 x 90.
That makes sense. My uncles broke about 3/4" out side the bracket and screwed out with visegrips. I put the 100 bolt in and noticed the threads were lacking about 1/4" from reaching the back of the tensioner. It looked like the tensioner sits flush with the bracket so I didn't even try it and put the 80 in instead.
__________________
1997 Ford f-250 w/7.3 TW 4 Pos Chip, 6637 filter, 3in downpipe, Poly front bushings, Velvet ride shackles, Lost kitty,
Reply With Quote
  #20  
Old 12-10-2013, 10:40 AM
phiodiesel phiodiesel is offline
New User
 
Join Date: Dec 2013
Posts: 3
phiodiesel is starting off with a positive reputation.
Quote:
Originally Posted by fridgeddiesel View Post
That may be true. The next size bolt I could find was a M10 x 1.5 X 70 which is NOT long enough. My original bolt had sheared off behind the first three threads in the mounting bracket - stripping out those threads. I noticed that the 100 length bolt stuck thru the back side of the tensioner just a little with no threads. I had purchased an M10 split lock washer that brought that non threaded part back into the tensioner housing. I attached the tensioner to the mounting bracket on the work bench with out the washer and it sucked up tight so I did not use the washer. Probably due to the first three threads being stripped out.

I would guess from putting the parts together from the original bolt that it was a M10 x 1.5 x 90.
I'm having the same issue with my 92 F250. I tried the suggested bolt (CHS 8.8) without the locknut, and the bolt still broke after leaving the truck for an extended idle in my driveway. Does anyone have a backup original bolt that I could buy or have? Thanks
Reply With Quote
  #21  
Old 12-10-2013, 07:09 PM
fridgeddiesel fridgeddiesel is offline
Senior User
 
Join Date: Dec 2004
Location: Gunnison, Co.
Posts: 249
fridgeddiesel is starting off with a positive reputation.
You need to find a Class 12.9 metric bolt or at least a Class 10.9 would be strong enough but Class 12.9 is stronger. Class 10.9 I believe is about a Grade 8 English bolt. Class 10.9 and 12.9 are both heat treated alloy bolts like Grade 8 bolts. Class 8.8 is so soft it will shear off as it did. Class 8.8 bolts are basically worthless for anything that has to be torqued tight or has a lot of shear applied to it. It is confusing and I have made the mistake several times going from English Grade bolts to Metric Class bolts. You grab a Class 8.8 bolt thinking it is a Grade 8 hardened bolt and the next thing you know it is sheared off in the engine and you are having to extract it or worse drill it out and tap it to the next size up...
__________________
97 F250 Ext. Cab. Short Box 7.3L PSD 4X4 5-Speed, 4.10 Limited Slip, Front Receiver 8,000 lb Winch
Pyro & Boost Guages. 55W HID 5000K Headlights. Daylighter Off-Road Lights
PHP 6 Position Chip. FPR Shimmed. AIC. 203* Thermostat. Stancor GPR. FS-2500 OBFS
6637 Intake. MBRP 4" Exhaust/Gutted EBPV. Air-Lift RideControl Front Air Springs
Reply With Quote
  #22  
Old 12-10-2013, 07:42 PM
phiodiesel phiodiesel is offline
New User
 
Join Date: Dec 2013
Posts: 3
phiodiesel is starting off with a positive reputation.
Quote:
Originally Posted by fridgeddiesel View Post
You need to find a Class 12.9 metric bolt or at least a Class 10.9 would be strong enough but Class 12.9 is stronger. Class 10.9 I believe is about a Grade 8 English bolt. Class 10.9 and 12.9 are both heat treated alloy bolts like Grade 8 bolts. Class 8.8 is so soft it will shear off as it did. Class 8.8 bolts are basically worthless for anything that has to be torqued tight or has a lot of shear applied to it. It is confusing and I have made the mistake several times going from English Grade bolts to Metric Class bolts. You grab a Class 8.8 bolt thinking it is a Grade 8 hardened bolt and the next thing you know it is sheared off in the engine and you are having to extract it or worse drill it out and tap it to the next size up...
Thanks for your response! Where would i find a grade 12.9 or 10.9? I'm in the southeastern US
Reply With Quote
  #23  
Old 12-10-2013, 08:14 PM
fridgeddiesel fridgeddiesel is offline
Senior User
 
Join Date: Dec 2004
Location: Gunnison, Co.
Posts: 249
fridgeddiesel is starting off with a positive reputation.
A decent auto parts or hardware store with a large selection of bolts may stock Class 10.9 or 12.9 bolts. I still have a Class 8.8 bolt in my tensioner because that is all I could find locally and it is holding. Not my first choice to use so I carry an extra in my truck just in case but that was what I could come up with at local hardware store. We have a new Tractor Supply in our town and they actually have some Class 12.9 bolts in stock. If you can not find one locally maybe you can have a store order what you need or order it over the internet.

Do you have something else going on causing too much tension on the tensioner? Such as the wrong idler wheel somewhere? The lower right (side of motor) should be a grooved idler and not a smooth idler. I think I originally broke my tensioner bolt due to the fact that I threw the lower right idler on the road and replaced it with a spare smooth one that I had in the truck. This makes the belt too tight and might have been the cause of my problem. See if you have two smooth and one grooved idlers - at least on the 94-97 Powerstroke.
__________________
97 F250 Ext. Cab. Short Box 7.3L PSD 4X4 5-Speed, 4.10 Limited Slip, Front Receiver 8,000 lb Winch
Pyro & Boost Guages. 55W HID 5000K Headlights. Daylighter Off-Road Lights
PHP 6 Position Chip. FPR Shimmed. AIC. 203* Thermostat. Stancor GPR. FS-2500 OBFS
6637 Intake. MBRP 4" Exhaust/Gutted EBPV. Air-Lift RideControl Front Air Springs
Reply With Quote
  #24  
Old 12-10-2013, 08:36 PM
phiodiesel phiodiesel is offline
New User
 
Join Date: Dec 2013
Posts: 3
phiodiesel is starting off with a positive reputation.
Quote:
Originally Posted by fridgeddiesel View Post
A decent auto parts or hardware store with a large selection of bolts may stock Class 10.9 or 12.9 bolts. I still have a Class 8.8 bolt in my tensioner because that is all I could find locally and it is holding. Not my first choice to use so I carry an extra in my truck just in case but that was what I could come up with at local hardware store. We have a new Tractor Supply in our town and they actually have some Class 12.9 bolts in stock. If you can not find one locally maybe you can have a store order what you need or order it over the internet.

Do you have something else going on causing too much tension on the tensioner? Such as the wrong idler wheel somewhere? The lower right (side of motor) should be a grooved idler and not a smooth idler. I think I originally broke my tensioner bolt due to the fact that I threw the lower right idler on the road and replaced it with a spare smooth one that I had in the truck. This makes the belt too tight and might have been the cause of my problem. See if you have two smooth and one grooved idlers - at least on the 94-97 Powerstroke.
I just found a store and I'll look for tractor supply ones too. I think that my issue is vibration... I have a 92 and run it on biodiesel, and I haven't run the truck in a few weeks since the old bolt broke and I couldn't figure out how to get access to the sheared bolt. Having already replaced two, I'm now a veteran, and will try my best to get a 12.9 bolt tomorrow. I'll let you know what I find!
Reply With Quote
  #25  
Old 12-10-2013, 10:09 PM
oldbird1965's Avatar
oldbird1965 oldbird1965 is offline
Post Fiend
 
Join Date: Aug 2004
Location: AZ
Posts: 12,475
oldbird1965 is a name known to alloldbird1965 is a name known to alloldbird1965 is a name known to alloldbird1965 is a name known to alloldbird1965 is a name known to alloldbird1965 is a name known to all
Maybe you should try the SD dual tensioner mod, it smooths things out.

http://www.thedieselstop.com/faq/949...les/982314.pdf
__________________
Glenn
The Mule-96 2WD F250 EC/LB auto, Lots of Mods!! Semi retired, still runs great after years of pulling!!
The Mare 97 dually cc, s366 turbo, stage II's, IC, studs, springs, rods, JW auto, 4:10 LS, efuel, FS2500 bypass oil filter, HVHF IDM, IH WP, 6.0 trans cooler & fan, MBRP 4", SD dual tensioner, AFE intake, 220 amp alt, 38G rear tank, soundproofed, 3 TS chips
Reply With Quote
Old 12-10-2013, 10:09 PM
 
 
 
Reply

Go Back   Ford Truck Enthusiasts Forums > Diesel > 1994.5 - 1997 7.3L Power Stroke Diesel

Tags
88, assembly, bolt, chs, escape, f250, f350, ford, forum, idler, serpentine, size, stamped, tension, tensioner

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
93 Ranger Splash Tensioner PtownBubba88 Ranger & B-Series 9 01-28-2014 07:30 AM
Tensioner Troubles FordPowerStroke Super Duty & Heavy Duty 0 11-01-2013 02:21 PM
Idler Pulley to the Right of the Alternator on V10 jh818 Excursion - King of SUVs 7 09-28-2013 07:34 PM
Serpantine belt jumps off fuelhog450 Pre-Power Stroke Diesel (7.3L IDI & 6.9L) 9 04-13-2013 02:58 PM
New to the FTE and yes I have a problem haha (stripped T50 bolt head on idler pulley) treeclimber Pre-Power Stroke Diesel (7.3L IDI & 6.9L) 4 11-14-2012 04:35 PM



All times are GMT -5. The time now is 08:08 PM.


Powered by vBulletin® Version 3.8.7 AC1
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Advertising - Terms of Use - Privacy Statement - Jobs
This forum is owned and operated by Internet Brands, Inc., a Delaware corporation. It is not authorized or endorsed by the Ford Motor Company and is not affiliated with the Ford Motor Company or its related companies in any way. FordŽ is a registered trademark of the Ford Motor Company.

vbulletin Admin Backup