Yesterday's Tractor Co.
Shop Now View Cart
   Allis Chalmers Case Farmall IH Ford 9N,2N,8N Ford
   Ferguson John Deere Massey Ferguson Minn. Moline Oliver
 FAQFAQ   SearchSearch   MemberlistMemberlist   UsergroupsUsergroups   Traditional YT Forum ViewClassic View   RegisterRegister 
 ProfileProfile    Log inLog in 

1976 4230


 
Post new topic    
View previous topic :: View next topic  
Author Message
caseymx
New User


Joined: 07 May 2020
Posts: 3


Report to Moderator

PostPosted: Thu May 07, 2020 8:03 pm    Post subject: 1976 4230 Reply to specific post Reply with quote

I have a John Deere 4230 with the powershift transmission that I bought 2 years ago. I have been using it for the last 2 summers mostly baling hay and it has a small issue that has become annoying but hasn't got worse over time.
Changing from reverse to forward I notice "slack" before the tractor moves forward. For instance, I'm backing up, stop, change into forward gear, start easing out on the clutch and if I'm too aggressive letting out on the clutch I get a slight bang of a take off.
But, if I let out on the clutch just a little and wait a second, for what seems like some backlash to take up, then I get a smooth take off.
When the "bang" happens for some reason I want to say that it seems like the right side drive wheels looks like its taking most of the shock sometimes.
Any one experience any of this before or have an idea of some easy things to check? I'm curious if its maybe the differential or part of the final drive and planetary. I thought about maybe pulling the right side final drive off and see if I notice anything being it doesn't look like too much of a task.
 
Back to top
View user's profile
wore out
Long Time User


Joined: 01 Oct 2019
Posts: 778


Report to Moderator

PostPosted: Thu May 07, 2020 8:24 pm    Post subject: Re: 1976 4230 Reply to specific post Reply with quote

A certain amount of what you are describing is normal. There's lots of splines and gearsets involved, a little play here and a little play there all adds up.

Have you verified that the wheel center tapered hubs are TIGHT and haven't been moving around, wearing the key that engages with the slot in the axle shaft?

If the transmission and final drive seems concerning, the first thing I'd do is check for filings in the filters, and drain the oil and remove and check the transmission pump suction screen for metal.

Insert a shop magnet in the hole the screen was withdrawn from and see what you can pick up in the very bottom of the sump.

You're gonna find at least SOME "silver glitter".
 
Back to top
View user's profile
caseymx
New User


Joined: 07 May 2020
Posts: 3


Report to Moderator

PostPosted: Thu May 07, 2020 8:48 pm    Post subject: Re: 1976 4230 Reply to specific post Reply with quote

CVPost-wore out wrote:
(quoted from post at 21:24:15 05/07/20) A certain amount of what you are describing is normal. There's lots of splines and gearsets involved, a little play here and a little play there all adds up.

Have you verified that the wheel center tapered hubs are TIGHT and haven't been moving around, wearing the key that engages with the slot in the axle shaft?

If the transmission and final drive seems concerning, the first thing I'd do is check for filings in the filters, and drain the oil and remove and check the transmission pump suction screen for metal.

Insert a shop magnet in the hole the screen was withdrawn from and see what you can pick up in the very bottom of the sump.

You're gonna find at least SOME "silver glitter".


Thanks. Yes the hubs are tight and all. It just seems like a lot of "slop" or more than it should be.
We did a lot of service on it when we got it but can't remember on the filters. I will do them anyway. I see there are 2 on the left side. One is the function oil return filter and the other is the transmission oil filter. Is there also a pickup screen for the transmission pump?
 
Back to top
View user's profile
MSM
Tractor Expert


Joined: 05 Jun 1999
Posts: 2265


Report to Moderator

PostPosted: Fri May 08, 2020 8:41 am    Post subject: Re: 1976 4230 Reply to specific post Reply with quote

Changing from forward to reverse just
throttle down and shift. There is no
"clutch" on a powershift. It is an
inching pedal, to ease when backing
up to hook up an implement.when you
use it as a clutch it dumps all
hydraulic pressure to the trans which
has to build back up before the
tractor will move giving you the
delay/clunk. You can change the rate
of shift valve adjustment to firm up
or soften the shifts.
 
Back to top
View user's profile
tim s
Tractor Guru


Joined: 01 Nov 2008
Posts: 13447
Location: Somerset Ohio

Report to Moderator

PostPosted: Sat May 09, 2020 4:54 am    Post subject: Re: 1976 4230 Reply to specific post Reply with quote

Have some one watch the axles and do the forward/reverse shift a few times,, the bolts can be tight, but the key way can be worn,,I had a 3020 acting the same way this week.
 
Back to top
View user's profile
caseymx
New User


Joined: 07 May 2020
Posts: 3


Report to Moderator

PostPosted: Wed Jun 03, 2020 9:44 am    Post subject: Re: 1976 4230 Reply to specific post Reply with quote

CVPost-wore out wrote:
(quoted from post at 21:24:15 05/07/20) A certain amount of what you are describing is normal. There's lots of splines and gearsets involved, a little play here and a little play there all adds up.

Have you verified that the wheel center tapered hubs are TIGHT and haven't been moving around, wearing the key that engages with the slot in the axle shaft?


The tapered wedges were the issue on one side. Removed both wedges, cleaned and re-installed. There is a good bit of clearance in the key and key way but neither shows signs of wear. Seems to be holding so far. Only used it once moving hay since. Going to check bolts again to make sure they are still tight. I hope I don't have to remove it again because the geared adjuster is frozen to the housing and the wrench head is completely rusted off. Also had to make a tool from 4" pipe to drive the wedge loose.
Thanks for the heads up on this! Never occurred to me to look there but a little play there makes a big difference!
 
Back to top
View user's profile
:   
Post new topic    Yesterday's Tractors Forum Index -> John Deere All times are GMT - 8 Hours
Page 1 of 1

 
Jump to:  

TRACTOR PARTS TRACTOR MANUALS
We sell tractor parts!  We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today. [ About Us ]

YT Home  |  Forums

Modern View Forum powered by phpBB © 2001, 2005 phpBB Group

All Rights Reserved. Reproduction of any part of this website, including design and content, without written permission is strictly prohibited. Trade Marks and Trade Names contained and used in this Website are those of others, and are used in this Website in a descriptive sense to refer to the products of others. Use of this Web site constitutes acceptance of our User Agreement and Privacy Policy

TRADEMARK DISCLAIMER: Tradenames and Trademarks referred to within Yesterday's Tractor Co. products and within the Yesterday's Tractor Co. websites are the property of their respective trademark holders. None of these trademark holders are affiliated with Yesterday's Tractor Co., our products, or our website nor are we sponsored by them. John Deere and its logos are the registered trademarks of the John Deere Corporation. Agco, Agco Allis, White, Massey Ferguson and their logos are the registered trademarks of AGCO Corporation. Case, Case-IH, Farmall, International Harvester, New Holland and their logos are registered trademarks of CNH Global N.V.

Yesterday's Tractors - Antique Tractor Headquarters