Mowing B2320, B2620 and B2920 mower lifting mechanism for RCK54-29B and RCK60-29B

[eb542]

When I first installed the lift arm on my B2320 for the mid mount mower, I was not satisfied with the fit of the lift arm on the lower link rod of the 3Pt mount (see LiftArm.jpg). The internal diameter of the bushing on the lift arm is 23.75MM and the transversal shaft is 22MM. You can actually wobble the lift arm side to side when the deck is in the fully lowered position. I would greatly appreciate comments from other owners, just to see if I am the only one with this problem?

How to test your lift arm free play:

1) Fully lower the deck and release the pressure on the lift arm (orange) by lowering the lower link down a few extra inches.

2) Remove the left lower link see picture 1595 (in this picture the new bushing is installed).

3) Try to swing your lift arm sideways, any play?

See modification to lift arm in picture 1593 and the perfect inside diameter after the bushing was installed (picture 1594).

Waiting for your feedback.

Thank you Pierre for the bushing!

 

[Evil the Weasel]

Yep, there is a little bit of play in it. It doesn't seem like a problem to me though. Now the lift height, that's another matter...

 

[RRbota]

Yes, my lift arm is quite sloppy. Maybe they use the same arm for tractors like the 3030, which would probably have a larger diameter link rod???? Just a guess. Or, maybe they were just after more consistancy.......the design and quality of the lifting mechanism is just as poorly designed as the height adjustment cam and mechanism !!

 

[Hoosier_Daddy]

I cannot check it at this moment but it looks like you have it figured out with your measures. I will look at mine tomorrow but has to be the same.. Sure wish there was a real high locking pin for the deck when using the loader to keep it out of harms way without taking it off... Has nice weight on there that helps....

 

[MDM]

I thought there was a higher locking pin that could be used to pin the deck up higher?

 

[RRbota]

There is a lockout towards the front of the deck. It's designed to use the 2 pins from the rear of the deck. Nice design, except the holes don't line up. On mine, the only way I can use the holes is if I push, pull, and jack the deck around enough to get the holes to "semi" line-up, then use a smaller diameter bolt (about 1/4"). There's no way the holes will line up close enough to be able to use the pins supplied with the mmm . I find it's easier and quicker to just remove the deck.

 

[taos]

My rck60-29b has the same problem there is play in the lifting arm ,were did you get the bushing? the play in this arm can also cause the deck not to lift to max some times (gives me a hard time to move deck height dial to top position intermitent

 

[eb542]

I got the bushing done at the local machine shop, as for the cutting height adjustment, you could simply adjust the length of the lift rod (shorter rod = higher deck) and it would solve your issue with the height adjustment when full up.

 

[taos]

thanks , I will look into getting a bushing made

 

[BrierPatch]

There is a lockout towards the front of the deck. It's designed to use the 2 pins from the rear of the deck. Nice design, except the holes don't line up. On mine, the only way I can use the holes is if I push, pull, and jack the deck around enough to get the holes to "semi" line-up, then use a smaller diameter bolt (about 1/4"). There's no way the holes will line up close enough to be able to use the pins supplied with the mmm . I find it's easier and quicker to just remove the deck.

I would think if your deck is set up right the holes should line up. At least they do on mine, with no jacking, maybe just a little wiggling.

My lift arm is loose as well. Makes it easy to slide on and off though. I don't think I will bother with having a bushing made for it. It doesn't seem to cause any problems so far in the 3 years and 130hrs of use (75% mowing).

Good Job though on the bushing.

I am less than impressed with the lift mechanism and height adjustment set up on these tractors. The parts don't seem to be substantial enough for the weight and forces involved not to mention the whole design of lifting on the back of the deck and pulling against the front to get the front to raise.:confused2: