About 6 years ago I took apart my AMC 401 in my J10. I had it rebuilt and then got orders to transfer to Hawaii (I'm in the military). I could only take one vehicle with me so the CJ went (It was the only one of the two that could move under its own power). The J10 went into the parents barn. I visited after 1 1/2 years and tried to put the accessories on but they pulleys were not ligning up. I'm back after three years and the memory is even foggier. I need help.

I have a '74 AMC J10 with a 401. I got parts off of an AMC Matador and a GW to put on the following accessories. Air conditioner that lays with the ports on the passenger side, the alternator under the air conditioning pump, the power steering pump on the drivers side and the air injection pump under the power steering pump. I have all the brackets necessay and some extras.

The crankshaft pulley is a three groove and lines up perfectly with the three groove pulley behind the fan on the water pump. The ac pump and the alternator pulleys are both about 1/4 inch more toward the rear of the vehicle than the rear most two pulleys on the crankshaft. Everything is put together correctly according to the pictures I have. The power steering pump lines up with the forward most groove on the crankshaft but the air injection pump is nowhere close to where it should be.

Can anyone help????

While you're at it, how do you remove the bottom set of gears from the NP203 reduction box portion?

Let's see if I can remember now:

The power steering pulley should have two grooves. One groove will line up with the air injection pump and uses a short belt to drive the pump. The other groove will line up with the forward most groove on the crank and water pump.

The other two crank and water pump pulleys should be used to drive the alternator and a/c compressor. AMCs use a double belt setup to drive the alt and a/c, and you must buy a matched set of belts to use on those accessories.

heres a pick of my old 401, hopefully it will help. I did not have the air injection pump so that pulley is not used. I am also using a sanden compressor instead of the york that you have. It's still the same locations for the parts though.

click here (http://www.daspit.com/~corey/jeep1/) for the link and it's one of the first pictures. It's a pretty clear shot of the front of the motor.

hope that helps.

Check to see whether flipping the air pump pulley will put the groove in the proper position.

Thanks for the help. I had pictures from my repair manual but they didn't help with the problem. Everything looks the same. I ran the part numbers in a parts book that I have from '76 and it turns out I have brackets for a non-a/c vehicle and an a/c vehicle. I'm going to have to put some spacers behind the bracket to get things to lign up.

Here is what I have done for everyone who cares. For those that don't :flipoff2:

LilRocky, I don't think it is possible to flip the air compressor pump since it has an electric clutch.

The brackets that I got for the air conditioning pump and alternator are from a '76 Matador or so my parts book says. The pulleys for the water pump and the crankshaft are from a Grand Wagoneer of unknown age (probably mid '80s and a 360 to boot.)

I made a pointer out of a piece of aluminum and bolted it to the front of the waterpump. I bent it so that the pointer hit the center of the middle groove on the crankshaft. I rotated it up and it hit about 3/8 inch toward the front bumper from the center of the forward most belt on the air conditioning pump. This tells me that I need to put something 3/8 inch thick behind each bracket to hold the air conditioning pump and the alternator. This is actually a good thing because the alternator was way too close to the oil pump, filter, and oil pressure sending unit.

I next swung the pointer to the power steering pulley and it lined up perfectly (which it should since it is in the proper place for a setup without an air conditioning pump.) This will have to be spaced forward exactly the distance between the center groove and the groove cloosest to the front bumper on the crankshaft pulley. Everything should line up then.

I'm curious to hear if anyone else has had this type of problem. Could I get part numbers from another persons's air conditioning pump bracket? My part number is 3227681 and the application is titled "Less American Air". I think the bracket that I need is for the application "With American Air". What is American Air?

LilRocky, I don't think it is possible to flip the air compressor pump since it has an electric clutch.



I was speaking of the air pump (or "smog pump"), not the AC compressor.
The pulley on some "smog pumps" can be flipped, thus changing the relative location of its groove. If yours is now aligned with the forward groove of the PS pump, flipping it will allow using the rear groove on the PS pump to drive the "smog pump", thus freeing the forward groove to be driven off the front groove of the crank pulley. That allows the two rear crank grooves to drive the AC compressor and alternator (which must be fitted w/ a double groove pulley.)
This may or may not help w/ your belt-alignment issues.
The bracket you have is for the factory-installed York compressor mount on a V8 in an SJ. (I believe the "American air" may have been the dealer-installed system.)

Theres two sets of pulleys. Ones for a AC equipt motor and one is for a NON ac equpt motor.

IF they all came off the same motor and it had AC then the belt system is like this, Dual pully alternator, Two belts to Crank, AC, Alternator, One belt to crank and PS. And one belt from PS to Smog pump.

http://wheelingpiazzas.com/pictures/fan/DCP01069.JPG

http://wheelingpiazzas.com/pictures/fan/DCP01073.JPG

WheelingPiazza,

On the bottom picture I see what looks like four washers stacked behind the front power steering pump bracket on the passenger's side. On the top picture the brackets are together on the drivers's side so that tells me that there must be spacers behind the back power steering pump to space it forward enough so that it all ligns up. I'm curious if you have any spacers between the ac pump bracket and the head, 3/8" perhaps??