PTO 6886c air pump

jd36a · Apr 27, 2015

Just now getting to fiddle with my air pump and am now confused as to what is correct. I placed the pump onto the pto on my 1936 A and the cylinder that goes on the pto shaft is too large. It does have 2 splines inside the opening. Were there different size pto
shafts on these old John Deeres or is there an insert that I am missing. Don't ever intend to use, just a conversation piece but just curious. Thanks in advance.

Pete in MD · Apr 27, 2015

There were 3 different size crank inserts for the air pump to fit 1-1/8, 1-3/8, and 1-3/4 inch pto shafts.

6886C is the p/n for the pump body.

jd36a · Apr 27, 2015

OK did not realize that the shafts were of a different size. I am missing the insert then that goes onto the pto shaft. Thanks for the info

Pete in MD · Apr 28, 2015

Here's the P/C for the pump. The term "insert" may have been misleading. Key# 5 is the 3 different size "cranks" that could be used in the pump depending on the pto shaft size.
PC 442

jd36a · Apr 28, 2015

That explains it. I did a measurement and I have a pump with a 1 3/8" crank and my tractor has a 1 1/8" pto shaft. Thanks for the info.

PTO 6886c air pump

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