Joined: Oct 31, 2010 Posts: 13 Location: Cleveland, OH
Posted: Tue Mar 08, 2011 6:03 pm Post subject: Clutch/ flywheel
1) when installing the clutch, is an alignment tool necessary?
2) i purchased a new flywheel and need to have the two guide holes drilled to fit onto the two tapered dowel bolts; does anyone know the tapering specs?
Joined: Feb 28, 2011 Posts: 148 Location: Escondido, CA
Posted: Wed Mar 09, 2011 10:29 pm Post subject:
1) I can tell you, from personal experience, not a professional mechanic's standpoint, that no, it's not necessary - I've done it on both my M38 and a Ford flathead V-8 without a special pilot bearing alignment tool, unless you call a drift special. At least, that's what I think I used - it's been 30 years. I don't think I even had the drift when I did it on the Jeep. But, you'll have to get it pretty well centered somehow or you're going to be fighting it trying to get it all back together.
2) Sorry, can't help you on that one.
-Jim _________________ Jim M.
1952 M38 son-father project
Discovering more worn out parts, one assembly at a time
A simple piece of wood dowel the diameter of the clutch hub and turn the first inch or so down to the diameter of your pilot bushing and voila you have an alignment tool. Or you can eyeball center as you install the pressure plate if the bell is off. then when you are ready to insert the tranny get the tranny input shaft into the clutch hub and if it doesn't immediately slip into the pilot bushing have a helper depress the clutch pedal and you wiggle and push the tranny while with the tranny and transfer if connected in gear, rotating the tranny or transfer output.
The two tapered dowel holes for the flywheel reguire the correct angle reamer to properly fit the new tapered dowel bolts. If this has already been done before then you often run into a tapered hole that is too big for your new tapered dowel bolts and then you must either replace the flywheel or upgrade to the new style staright oversized shoulder dowel bolts. Most folks don't fool with the tapered dowels anymore. They just upgrade to the large straight shouldered dowel bolts and drill the holes to the new size.
Since we are doing the tranny and discussing dowel bolts do not forget that the bell housing uses two straight shouldered dowel bolts as well. _________________ Wes K
45 MB, 51 M38, 54 M37, 66 M101A1, 60 CJ5, 76 DJ5D, 47Bantam T3-C & 5? M100
Joined: Feb 16, 2007 Posts: 206 Location: Gold Coast Australia
Posted: Sun Mar 13, 2011 4:53 pm Post subject:
Just to add to Wes' post....always use an aligning device, it just makes things so EZ compared with eyeballing.
A wooden dowel which fits the pilot bush/bearing then wrapping on masking or electricians tape so that this tape is just @ the splines ID might be easier for some who don't have the ability to turn things. _________________ John GIBBINS
ASE Master Medium/Heavy Truck & Auto Technician 2002 USA
Licensed Motor Mechanic NSW # MVIC 49593 Current
YOU CAN'T TROUBLESHOOT WHAT YOU DON'T UNDERSTAND
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