Nissan Repair: transmission and electrical, inlet hose, battery voltage

Question
I have a 1997 Nissan pick up 2 wheel drive. Recently had to replace the transmission.  After replacing the transmission with a used one, the truck would run about 10 minutes then it would sorta lug down...like it was choking.  I could get it to run in first gear then shift to second to get it back home but when I went to drive, it would die.  Sometimes it even died in first and second.  That is the first part of this puzzle....do you have any idea what would cause this?
The second problem:  I was trying to drive the vehicle to a repair shop last night and it died in first gear.  After trying a few cranks, the starter stopped. I thought I had killed the battery, so I brought home a jump start charger today and it did no good.  I then checked the battery voltage and it was 13.67 when trying to crank but, the starter would not turn the engine.  What should I look for?  

Answer
Robert, the starter could be bound up or just burnt out from all the cranking.  It is essential that you do not crank the engine over for over ten seconds at a time to allow the starter to cool.  Then wait a minute or two to let the starter cool down between cranking.  I would take the starter off and bench test it to see if the brushes or fields are going out.  Also, you might check before taking the starter out to see if there is a pinched wire between the belhousing and engine block.  I have had that happen to me.  On the lugging down problem I would check the inlet hose and the fuel lines to make sure the inlet hose is not cracked and the fuel lines are not bent.