Control Spring Adjustment

4play

Well-known Member
I am reinstalling the spring assy into the top cover and have a couple questions.

1. When I removed the spring assy there was a missing spacer/washer in the bottom. This would be the first piece that goes into the top cover before the spring assy installs and the spring seat/cup would contact it . I saw this part on a parts diagram, labeled "overload stop" so I ordered one. Is this piece suppose to be in there?

2. Now that I am trying to install the spring assy and spanner nut, it seems like the slack tightens up before the spanner nut threads in very far. I have about half the nut sticking out or not engaged in the threads yet. The only reason I can think of it being this way is having the spacer/washer in there, it was about a 1/4" thick or so. Should this spanner nut thread in further?
 
Hello,
Yes, the disc is essential to hold the Draft rod in the correct position to make contact with the cup. The plain
rod part of the Draft rod passes through a hole in the disc. You have not mentioned whether you have a manual or
not. It would appear that you do not. Have you stripped the control spring assembly? After assembly with a new
rubber boot the rod should be tightened so the spring is tight to turn by hand.... NO MORE.. and then the groove
pin fitted to lock it. Before trying to refit the assembly the DRAFT lever on the quadrant must be fully lowered.
This should allow you to screw in the control spring nut further. As you screw in the nut it should be checked
continually for end-float. The end float will reduce and eventually cease. It is at this point that the locking
grub screw should be tightened. If you continue to screw the nut in the end float will reoccur.

DavidP, South Wales
 
I do have a manual, the reason I started this was a lot of slack in the clevis. I pulled the spring and linkage out, replace the bolt, cup and rubber boot, and that missing washer.

The problem I have now, it seems when installing the spring assy back into the top cover, the spanner nut only threads into top cover about half the thickness of the nut and my slack goes away. I'm pretty sure that's only about 4 threads of the nut and don't even think the set screw would be touching yet.
 
Another thing I noticed is the lift is very slow going up using position control, normal speed in draft. I took the spring assy out and was messing with that pin that goes through the spacer. If I push the pin in manually the lift goes up at normal speed.

Here is what it looks like to me. With the spacer installed the pin is not long enough to contact the spring cup. It seems like the pin needs pressure on it for the lift to operate correctly? This spacer was not there before and the lift worked fine other than the symptoms for having slack.
 
I have seen these new cups the wrong dimensions...try it beside the old cup...Some of the spurious parts are not made exact.......Sam
 

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