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John Deere 660 Hay Rake Gearcase Lube

J

Johnnypopper

Member
Location
Michigan
I am doing some off-season maintenance on my John Deere Model 660 Hay Rake. When I look inside the gearcase through the cap at the end of the output shaft, the lube looks white in color. I think it has a lot of water in it and I would like to replace the lube with new lube. The Owner's Manual calls for multi-Purpose lithium grease to be used in the gearcase. Pumping new lube in will be no problem, but I need to get the old lube out first. It looks like I have to remove the 6 cap screws and pull the input shaft assembly out of the gearcase in order to get inside and clean out the old lube. Has anyone done this before, and if so, is there anything I have to look out for? Will anything inside fall out of place and be hard to put back together? I would appreciate any suggestions you may have. Thank You
cvphoto141365.jpg
 
i would put some 80-90 gear oil in it. then use it. then drain it. then put in what ever you want grease or gear oil. i would just use 80-90 gear oil. you mean thee is no drain plug at the back? that is odd.
 
Off white is the only color I have seen multi-purpose lithium grease in. Weather in pound can or cartridge or as motor assembly lube.
 
The parts list does show a 3/8 pipe plug but i dont see one on my gearbox. The grease thats in there will not come out through a 3/8 plug hole anyway, so it would not be of much use.
 
That is the reason I said to put oil in it , then use it to mix it all up then drain it. I use 80-90 in my new Holland 256.
 
Went to the online publications for deere and they say to use deere multipurpose grease or equivalent. So otherwise whatever you use in your grease gun. So using a gear oil might go right through the seals. Or cornhead grease if you want have a lighter grease in there.
 


I went through mine 2-3 years ago. I removed the whole input shaft assy. and cleaned it all out good with paper towels. Nothing falls out. There is a bearing in the opposite end from the input shaft that I could not get out. I replaced the input bearing and seal. I also replaced the seal around the actuator lever. That is where the water gets in. There was a hole underneath that enabled me to get a drift in to knock the old seal out. I am pretty sure that I put just plain gear oil in it.
 
Thanks for the information. I am going to fabricate a cover over the shift lever when I am done to prevent any water from getting in. I store
it indoors, but occasionally it gets rained on during haying season. This rake was stored outdoors for several years before I bought it and I
am sure water leaked into the gearbox.
 
(quoted from post at 06:38:19 11/24/22) Thanks for the information. I am going to fabricate a cover over the shift lever when I am done to prevent any water from getting in. I store
it indoors, but occasionally it gets rained on during haying season. This rake was stored outdoors for several years before I bought it and I
am sure water leaked into the gearbox.
Click to expand...

In addition to the new seal on the lever hole I cut a piece of inner tube and cut a small hole in the middle and pulled it over the lever.
 
I have a 670. Mine does not have the front wheel. I've always wanted one with a front wheel so I could put on a tongue, double tree, single trees and an old spring seat in the back to rake with a team of horses. kelly
 
(quoted from post at 18:06:51 11/25/22) I have a 670. Mine does not have the front wheel. I've always wanted one with a front wheel so I could put on a tongue, double tree, single trees and an old spring seat in the back to rake with a team of horses. kelly
Click to expand...

Don't you have a forecart to hook it up to?
 
Yup, I have a forecart, but I'd like to sit behind the rake rather than turning around all the time to look at it. I'm lazy! kelly
 
(quoted from post at 18:40:54 11/26/22) Yup, I have a forecart, but I'd like to sit behind the rake rather than turning around all the time to look at it. I'm lazy! kelly
Click to expand...


I don't look at mine until once in awhile I think "Oh no, I don't hear anything, is it still behind me?"
 
I was able to take the gearcase apart with no problem. There was water in it but not as much as I had thought. It probably would have been fine like it was. I ended up using Corn Head Grease to refill the gearcase. The manual called for general purpose lithium grease but that didn't seem right, and the old lube was much thinner than that. I just wanted to thank everyone who replied to my original post and I wanted to let showcrop know that I used his suggestion to keep the water out. I used a piece of inner tube to cover the gearbox. By using the natural curvature of the inner tube, I was able to make it lay down nicely on top of the gearbox. Since the rake is stored inside most of the time, that piece of tube should last a long time. Thanks again to everyone.
cvphoto141758.jpg
 
(quoted from post at 17:51:49 11/29/22) I was able to take the gearcase apart with no problem. There was water in it but not as much as I had thought. It probably would have been fine like it was. I ended up using Corn Head Grease to refill the gearcase. The manual called for general purpose lithium grease but that didn't seem right, and the old lube was much thinner than that. I just wanted to thank everyone who replied to my original post and I wanted to let showcrop know that I used his suggestion to keep the water out. I used a piece of inner tube to cover the gearbox. By using the natural curvature of the inner tube, I was able to make it lay down nicely on top of the gearbox. Since the rake is stored inside most of the time, that piece of tube should last a long time. Thanks again to everyone.
<img src=https://www.yesterdaystractors.com/cvphotos/cvphoto141758.jpg>
Click to expand...


Good deal! thanks for posting back.
 
Lubriplate 105 in the white tube with turquoise cap at most any autoparts store. Its thicker than 140 and thinner than GL2 and stays put.....thick enough to not leak on old seals and thin enough to get in all the crevices and move around with the machine operating.
 
My first was a drag type mounted on the drawbar, non tricycle. Had many since and all were tricycles for the reason you are posting.
 
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