Transmission Modulator Bolt
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Tuned
Joined: Oct 2005
Posts: 271
Likes: 1
From: Chesapeake VA
Transmission Modulator Bolt
I purchased a FoMoCo modulator (TM-74) and some M6x10mm and M6x16mm bolts to replace the one I rounded some time ago. Advance Auto only sold M6x12mm bolts in a box set 
. I figured I'd go longer and shorter just in case. Is it possible that the 10mm will hold or will I have to shorten the 16mm one? Thanks.
. I figured I'd go longer and shorter just in case. Is it possible that the 10mm will hold or will I have to shorten the 16mm one? Thanks.
Post Fiend
Joined: Apr 2005
Posts: 5,720
Likes: 5
From: Washington state
whatever you do, be careful and do NOT overtighten the bolt...use a torque wrench with 6 point socket or one finger push on six point box end wrench
this is a steel bolt into an aluminum case, easy to strip the case hole threads
then it's down feces river without a paddle and no current on a hot day
10mm length should be fine...screw it in full length by finger only to see if enough of bolt will be in case after thickness of vac. mod. flange and that depth is right....also will chase clean case threads and tell you if they are stripped already
use lithium or light coating of wheel bearing grease on bolt threads to prevent aluminum galling and corrosion in case threads
this is a steel bolt into an aluminum case, easy to strip the case hole threads
then it's down feces river without a paddle and no current on a hot day
10mm length should be fine...screw it in full length by finger only to see if enough of bolt will be in case after thickness of vac. mod. flange and that depth is right....also will chase clean case threads and tell you if they are stripped already
use lithium or light coating of wheel bearing grease on bolt threads to prevent aluminum galling and corrosion in case threads
Last edited by 96_4wdr; Apr 10, 2006 at 07:33 PM.
Thread Starter
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Tuned
Joined: Oct 2005
Posts: 271
Likes: 1
From: Chesapeake VA
Perfect! I forgot about the screwing into aluminum part. Vise Grips should work to get the rounded bolt out right? Thanks 96. Is it possible to very carefully use a regular ratchet?
Last edited by Lance1601; Apr 10, 2006 at 09:56 PM.
Former ******
Joined: Nov 2004
Posts: 4,901
Likes: 2
From: Salt Lake City, Utah
Yes, you can use a ratchet, but a torque wrench is highly recommended, in fact essential if you plan to work on your own vehicles. I would get a slip kind, rather than a bender type torque wrench, bender types are good for higher torque applications.
Thread Starter
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Tuned
Joined: Oct 2005
Posts: 271
Likes: 1
From: Chesapeake VA
Modulator changed. Maybe it's just me, but the van holds better at speed, it switches gears according to foot pedal pressure better, and O/D kicks in more often. Job was super easy, recommended for the do-it-yourself type. Intermediate difficulty. Most of all, I'm not loosing fluid from the modulator now. If anybody wants I can do a step-by-step walkthrough. Thanks for everyones help.
Post Fiend
Joined: Apr 2005
Posts: 5,720
Likes: 5
From: Washington state
good job....glad you stuck with us
now's the time for an oil change with all that ATF in the oil, an engine combustion chamber de carbonization because of all that ATF thru the engine, 10 quarts of new ATF in a gentle flush and new spark plugs
lot's of personal satisfaction rolling down the road and being able to trust a rig because one knows who did the work and how it was done
these Aero's are some of the last rigs made that DIY's will be able to work on extensively....the next generation of complex total electronic control gas/electric and diesel/electrics are almost upon us with drive by wire control and totally sealed black boxes and engines
now's the time for an oil change with all that ATF in the oil, an engine combustion chamber de carbonization because of all that ATF thru the engine, 10 quarts of new ATF in a gentle flush and new spark plugs
lot's of personal satisfaction rolling down the road and being able to trust a rig because one knows who did the work and how it was done
these Aero's are some of the last rigs made that DIY's will be able to work on extensively....the next generation of complex total electronic control gas/electric and diesel/electrics are almost upon us with drive by wire control and totally sealed black boxes and engines
