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340 rear end oil

A

atk_nut

Member
OK, in my quest to find out what's up, here's what I have found out:

- The local parts guy says the tranny and rear end are common.
- But why is there a separate filler cap?
- I think I have an independant pto.
- I can't find any check plug anywhere on the rear end.
- There is something that looks like a plug by the pto lever, but I don't want to take it out until I know for sure. (for fear of letting something loose on the inside.)

The bottom line is that I don't want to drain all of the oil, then end up only re-filling the transmission.

Any help?
 
The 340 does not have common sump. It will be the same as 4600 AP. The trans will probably have a dip stick in the trans cover. If not,Look on the RH side of tranny case at front of running board. The diff check plug is also on the RH side. If you get down on your knees by the rear of RH running board and look up near the flow control valve,you will see an alien head plug or could be a square head plug. Do not remove a screw driver slot screw. Fill the diff behind the seat. You probably have two,either one is ok to fill.
 

I've looked there and can't find any plugs. Is it closer to the housing?

Have a look at this picture:
r3823.jpg
 
I sure hope I have not given you the wrong info,because it sure looks like you are missing the level plug.
I will try to look at a tractor at work tomorrow and see exactly where it is located.
 
My late 4000 has the check plug in the upper side of the pump cover. It is a square headed plug with straight threads and a sealing washer. The photo here of the 340 looks to have the same pump/plug. Parts shows this plug and pump cover used on all 3 cylinder tractors with independent PTO. I have yet to see a 3 cylinder Ford chassis that had a common sump, transmission and rear axle. So far as I know, they just do not exist
 
Rick,you are so correct on the 4000 level plug,but they raised the cap on the 4600 by about 4 gal. This put the plug up near the flow control vale. I do not know what he has.
 
I did find an allen plug (maybe) after scratching away some grease.

Could that be it?

Have a look in this picture (the arrow):

r3824.jpg
 
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