Troybilt Horse 1984 - Pto Not Fully Engaging, Causing Tines To Slip

I think the issue is that the mating side of the PTO, which is on the tiller assembly, is not fully extended. There is a spring that keeps it out and perhaps its not coming out to its full extent, and that its causing the slipping. I wanted to disassemble but cannot figure out how to pull the shaft out of the housing, even though on one end i removed the circlip and the chuck (part 11) and the bearing cover on the other side (part 18). I did not see the 3 washers (part 17). Is the function of the spring loading to act as a kind of safety if there is too much stress on the tines? I wonder if in the many years (this is a 1984 machine) the spring has lost some of its tension. I would love to hear any thoughts and suggestions on these topics, i.e. how to take it apart, the washers, and the role of the spring.

Supporting Images

You can click the images below to enlarge

I Know the Answer!

I have the same question
Request More Information

Current Answers

Answer #1: Posted by knaramadil on December 12th, 2022 11:37 PM

This answer was accepted by the poster of the original question.

knaramadil

Member since:
December 9th, 2022

Points: 38,290

1,100
points

It sounds like you are trying to diagnose and repair an issue with the PTO (power take-off) on your 1984 Troybilt Horse tiller. Here are some possible causes of the problem you are experiencing, as well as some suggestions for how to fix it:

The PTO clutch may not be fully engaging. This could be due to a faulty clutch, worn or damaged clutch components, or a lack of lubrication. To fix this issue, you will need to inspect the PTO clutch and its components, and replace any faulty or worn parts. You may also need to lubricate the clutch to ensure that it can engage fully.
The spring that keeps the PTO shaft extended may be faulty or weak. Over time, the spring may lose its tension, which could cause the PTO shaft to not extend fully. This could cause the tines to slip and not engage properly with the ground. To fix this issue, you will need to replace the spring with a new one that has the correct tension.
The washers (part 17) that you mentioned may be missing or damaged. These washers are used to keep the PTO shaft centered in the housing, and if they are missing or damaged, the shaft may not extend properly. To fix this issue, you will need to locate the missing washers or replace them with new ones.

To disassemble the PTO housing, you will need to remove the circlip and chuck (part 11) from one end of the shaft, and the bearing cover (part 18) from the other end. Once these parts are removed, you should be able to slide the shaft out of the housing. Be sure to keep track of all of the parts and how they are assembled, as this will make it easier to reassemble the PTO later.

I hope this helps. Let me know if you have any other questions.