Hi I bought a nice Aux pulley drive:
for the back of my 6-71 so that I could get rid of the huge useless generator back there:
No pic of pre removal...but if you have one you know what it looks like.
The new P drive came with its own internal gear that is supposed to bolt to the cam gear:
The old Gen was driven by this internal gear, here it is in the engine:
Here it is out:
With the spacer:
This is what the cam gear looks like without an internal gear drive bolted to it:
The old gear drive won't fit the new P drive and the bolt holes on the Cam gear are larger than the bolt holes on the new gear drive.
The P drive housing bolts up OK and the spacing from driven gear to the cam gear face is OK:
but I will need to bore out the holes on this:
by 1/16 (old bolts 27/64, new drive gear 23/64.
This gear will not be pushing much....tops a 160 amp so I wouldn't mind some reassurance that it will have no trouble even though the wall of the gear will be 1/32 thinner. Now that I write it down sounds minor....
Buddy who sold it to me said it would bolt right up, but my bus guy says it is from a 6V71, personally I have no idea but I think I can get it to work.
Can't return it as it was a liquidation sale....
My next concern is the size of the pulley....diameter is 5 5/16", (bottom of the belt V)....is this going to drive the usual truck alts fast enough?....IE is there a particular speed I should look to drive my new Alt at and will the aux drive pulley size allow that? I know I should be able to change the Alt pulley, but presumably if I go too small I might get slippage. As alway info links etc appreciated.