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Implement Alley Discussion Forum

NH 55 rake - help lubrication!

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Debbie B

08-28-2003 19:49:17

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Not sure what you call them, but...
how do you grease/oil the spools/hubs to which the bars are attached? (Gear box is not problem, that has a plug so I figured that one out.) I can find no grease fitting or oil fill plug to lubricate the turning "spool" hubs. I think they must have some oil in there somewhere because I can see where it's leaked down while it's been sitting. Help! I don't want to ruin the only reliable piece of equipment I have.

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Ernei Bob

08-28-2003 23:14:43

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Re: NH 55 rake - help lubrication! in reply to Debbie B, 08-28-2003 19:49:17

Debbie;

What Rob said is correct, they are sealed bearings. What we did on our NH55 was drilled and tapped a hole at each end of the time bar and inserted grease zerks for each sealed bearing. We only give each zerk a squirt of grease each 8 hrs. of operation and we have only replaced 1 bearing in 20 years of use. This is much easier than taking it apart every year as Kelly mentioned.

Good luck!
Ernie Bob

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Kelly C

08-28-2003 21:32:30

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Re: NH 55 rake - help lubrication! in reply to Debbie B, 08-28-2003 19:49:17

Tine bar bearings need to be removed to greese them. The manual say once every other hay season.
You need to remove the tine bars to do this.
Remove A tine bar as follows:
#1 Loosen the mounting boly to the right spindle assembly.
#2 Loosen the bearing stud at each end of the tine bar which is to be removed.
#3 Remove nuts from each end of the tine bar and remove it from the reel.
Note: two consecutive reel bars and the right spindle must be loosened in order to remove a single bar from the reel. Damage may result if not done this way.
Tine bar bearings:
#4 Take the dust cap off the bearing housing and remove the snap ring. Remove the bearing from the bearing housing by placing the nut on the threaded end of the bearing stud and tapping aganst the nut.In some cases it may be nessasary to place some spacers against the shoulder of the bearing housing and pull the bearing out by tighting the nut aganst the spacer this pulls the bearing out.
Installing the tine bar bearing:
#1 clean all parts thoughly.
#2Pack the tine bar bearing with greese. Fill the cavity of the bearing housing this would be behind the bearing when installed. Do not fill completly.
#3 tap bearing into possition. Make sure the seal is seated against the shoulder of the housing and install the snap ring.
#4 fill the cavity on the outer side of the bearing with greese. The greese should completly fill this area to keep area clean.
#5 reinstall the tine bar.It is very important that the nuts on the left end of the tine bars be made very tight (150lbs-ft torque)
Hope this helps

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paul

08-29-2003 05:43:37

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Re: Re: NH 55 rake - help lubrication! in reply to Kelly C, 08-28-2003 21:32:30

They've got to be kidding!!!!! !!

I managed to squeeze things together with the rubber plug on the one end, thought that was how they were put together.

So, why didn't they put a grease zerk, 10 holes & 10 zerks, if it needs lube that often? Can't imagine totally dis-assembling the rake every other year. That _never_ happens in the real world!

--->Paul

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Try this- Kelly C

08-29-2003 11:39:56

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Re: Re: Re: NH 55 rake - help lubrication! in reply to paul, 08-29-2003 05:43:37

Trying to copy the manual. I really dont ever do this well. Images are alway to big or cant read them. Here goes. Page 1

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Page 2-KellyC

08-29-2003 11:41:59

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Re: Re: Re: Re: NH 55 rake - help lubrication! in reply to Try this- Kelly C, 08-29-2003 11:39:56

Page 2. Try right clicking in the image and choose save to your computer. Them open with a image viewer and maybe you can zoom in enough.

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Debbie B

08-31-2003 12:19:01

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Re: Re: Re: Re: Re: NH 55 rake - help lubrication! in reply to Page 2-KellyC, 08-29-2003 11:41:59

Thanks Kelly, that's exactly the picture I needed! The oil/grease is leaking from the spider hub. The service instructions say to "adjust the bearings by tightening the nut behind the reel spider". Does that mean the only adjustment is to tighten the nut as much as possible? What adjustment are you trying to make by doing this? In order to repack these bearings, do I just remove the adjusting nut to get to the bearings?

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Kelly C

08-29-2003 10:50:47

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Re: Re: Re: NH 55 rake - help lubrication! in reply to paul, 08-29-2003 05:43:37

Yea I have been thinking about mine. I havent done mine yet and I have no idea when it was done last. Maybe never!! That will for sure be on my winter agenda. Oh and I love this rake!!!

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paul

08-31-2003 10:16:47

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Re: Re: Re: Re: NH 55 rake - help lubrication! in reply to Kelly C, 08-29-2003 10:50:47

Dad got the rake used about 35 years ago. I've greased 2 of them - when I replaced them last year. None of the rest have been greased.

That kind of thing just doesn't happen on a working farm.

I suspect they say not to over grease because of the push-on fitting, hard to push the bearing in if too much grease back there.

An issue with putting zerks on would be placement - don't want hay to hang on them.

--->Paul

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Joel Harman

08-29-2003 10:43:58

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Re: Re: Re: NH 55 rake - help lubrication! in reply to paul, 08-29-2003 05:43:37

Think about ALL the rakes NH manufactures & there is why they didn't add those 10 zirks to each machine

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Debbie B

08-29-2003 05:27:00

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Re: Re: NH 55 rake - help lubrication! in reply to Kelly C, 08-28-2003 21:32:30

The part that appears to be leaking some oil (not sure what it's called) is the center hub of the spindle (?) to which the tine bars attach. There's about 6 bolts near the center of the spindle which attaches the spindle to the hub and to the rake frame. It doesn't seem like there needs to be lubrication at the center of the spindle. I can take a picture and email it to you if you can give me your email address.

What about Bob's suggestion of tapping a hole and inserting a grease fitting into the tine bar bearings? Sounds a lot easier if it works.

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Kelly C

08-29-2003 10:55:46

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Re: Re: Re: NH 55 rake - help lubrication! in reply to Debbie B, 08-29-2003 05:27:00

Well I am not sure about that. The fact that the manual Specifically states not to over fill the back side of the bearing causes me some concern.
On the other hand the real world enters into the decision. Who the heck is going to tear apart thier rake every 2 years to grease a bearing?
grease from a grease gun is better than no grease for 10 years.

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Hay Dr

08-28-2003 20:54:02

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Re: NH 55 rake - help lubrication! in reply to Debbie B, 08-28-2003 19:49:17

Fill the gearbox up with EP"0" grease and the leaks will stop in the gearbox.Same grease Snapper uses in their transmissions.

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Rob

08-28-2003 20:21:48

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Re: NH 55 rake - help lubrication! in reply to Debbie B, 08-28-2003 19:49:17

I don't use a NH rake but it's possible they're "sealed bearings" meaning they're lubricated when manufactured and supposedly will last forever! Of course nothing lasts forever so one or more may need replacement. Alternately, you might be able to use a spray lubricant on the outside of the bearing(s). I'm sure a NH user can confirm this or let you know what to do. I'd suggest you order manuals for all your machines, that way you can find out all about settings, operation, lube and mainteance. It's a cheap investment that will pay for itself over and over. Hope this helps.

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