05-03-2018, 10:02 AM
Input from you all is greatly appreciated . I am not sure if the dash tach can be trusted , engine sounds pretty busy at indicated 500 rpm . Since the last post I had Sharon watch the digital voltmeter connected to one of the batteries while I started the engine and ran it up to 700 and 1000 rpm . When first started the voltage went above 13 initially , then back to 12.9 ( I think the rpm settles down after a minute or so) . After warm up I brought the rpm up to 7 or 800 rpm and the voltage came up to 13.5 . I think the regulator has a fairly high threshold . As mentioned before , the alternator has been upgraded to 220 amp by ASC in Little Rock , basically a new alternator using my direct drive front housing . The regulator is a Leece Neville p/n 12200 which is known to have a high starting point. In any case , I believe the alternator will keep the batteries charged at highway speeds .
I accessed the alternator by removing the bed platform which must have been removed previously . This also allowed me to clean things up as well as possible and replace insulation , turbo heat shield , etc. I think the alternator can be removed from the side now that I know how it bolts on . Not sure I saw any bakelite parts to rattle , there is a phenolic piece linking the couplers . I devoutly hope that the alternator is on for good now !
Thanks for your help !
Chris
I accessed the alternator by removing the bed platform which must have been removed previously . This also allowed me to clean things up as well as possible and replace insulation , turbo heat shield , etc. I think the alternator can be removed from the side now that I know how it bolts on . Not sure I saw any bakelite parts to rattle , there is a phenolic piece linking the couplers . I devoutly hope that the alternator is on for good now !
Thanks for your help !
Chris
1986 #89
VIN 007
Detroit 8V92 TA 475 HP
Allison four speedĀ
Chris and Sharon Hand