1985 BJ70 CND refubishing and modifications

[crushers]

from scratching my head to a sketch to machining to completion is pretty cool to watch take place ...

 

[crushers]

so once the unit was mounted back in the lathe we checked the various pullies for true and found the center (alternator) double pulley was out of round by 10 thou so a kiss was performed and it ran very nice.

 

[crushers]

back to the shop to mount it up on the engine so i can see what clearence issues i will have ...
most obvious is the fan blades

 

[crushers]

retap the holes since this engine has been sitting for almost a decade ...
then a spacer is made and the PS pump pulley is reversed and reinstalled
spacers for the idler pulley mount and longer bolts

tomorrow the idler bearing will be installed.

 

[crushers]

we took the factory 3B fan and compared it with a new take off HZ fan and now we have the clearence we need.

 

[AlbertoSD]

Good work, Wayne...keep the photos coming!

 

[crushers]

thanks for the compliment,
the lathe turns at 500-600 rpm
if the engine hits 4000 rpm (8X500) just a number out of my ass to show that if there is a wobble then it would be MUCH worse at higher RPM especially considering the amount of weight hanging off 4 grade 8 8 mm bolts.
<i am sure an engineer would be able to give me percise percentage of magnification>

 

[crushers]

had a couple hours today to play in the shop and i wanted to get the alternator positioned

getting an idea of location using the old mount ...

 

[tmarx]

Once again, superb craftmanship !

 

[crushers]

busy week,
the alignment of the tensioning arm for the alternator worked out better than i thought. a spacer between the original threaded hole on the PS pump and the new arm cut to proper length and it works great.
positioning the York down below ...
now the fun starts.

 

[crushers]

it is TIGHT fit for the York
the clearence between the top of the York and the mount for the alternator is minimal.

 

[crushers]

interference for the belt and the alternator mount.
notched and extra support installed to support the heavy alternator.
now i needed a tensioner for the York, i wasn't impressed with the aftermarket units i found so i decided to modify a factory piece to fit. the tensioner will run on the back side of the belt so a different pulley was required. to make this pulley work i had a spacer made up to fit between the factory spigot and the new bearing inner dimension ...

 

[crushers]

alignment in progress ...
working on the mount.

 

[crushers]

test fitting the tensioner location

 

[crushers]

testing the travel of the tensioner pulley.
satisfactory.

 

[crushers]

the rear aluminum ladder almost completed with tire swing out, once the tire is sitting on the mount the rear bumper doesn't look a massive.

 

[crushers]

i feel the tensioner will need to be readjusted away from the York, damn.
the york gets installed first
then the bracket for the alternator, added another gusset and an access hole for the feed for the york

 

[crushers]

a better shot of the access hole
the stronger alternator mount.
everything installed and test fitted ...
not very pretty but functional.

 

[crushers]

checking the clearence for the fan ...
works for me.

 

[crushers]

cutting for the factory snorkel
empty body other than dash
doors removed so we could rebuild the hinges

monday we lift the body and deliver it for painting ...