Old offset pull disc needs a lube job

[flusher]

I've started to refurbish an old 6-ft wide offset pull disc that my neighbor gave me to use with my 1964 MF-135 diesel. Don't know the manufacturer. It has twenty 20" dia blades in four gangs.

It weighs a ton. Got the rear end up with the LA302 FEL on my Kubota B7510HST. The little FEL doesn't have enough oomph to lift the front end when the rear is on the blocks.

I can rotate the two rear gangs by hand, but the bearings are stiff. Don't want to disassemble unless absolutely necessary. Need to free up the bearings.

There are lube tubes on each bearing of a kind that I've not run into before.

The top unscrews with the help of a little PB Blaster.

At first I thought it was some type of grease cup. Anyone out there famaliar with this type of lube setup? There's no grease zerk so I assume it's an oil-lubed bearing. Any info on type of oil to use? Any info on a solvent that I could use to loosen up the bearings?

Thanks for the help.

 

[scott_vt]

Afternoon Ray,
Great find ! Looks like an old bog harrow. The bearings are probablly wood and are lubricated with copious amounts of oil in those resevoirs ! Good luck with it !

BTW any oil should be fine, as far as freeing thigs up I like "Liquid Wrench" !

 

[flusher]

Afternoon Ray,
Great find ! Looks like an old bog harrow. The bearings are probablly wood and are lubricated with copious amounts of oil in those resevoirs ! Good luck with it !

BTW any oil should be fine, as far as freeing thigs up I like "Liquid Wrench" !

Interesting. Educate me re: bog harrow. What makes a harrow a "bog harrow"?

 

[Soundguy]

Where ya pull it!

I've seen both wood and grey iron bearings in those style carriers.. both of them take LOTSA grease.

Soundguy

 

[flusher]

Where ya pull it!

I've seen both wood and grey iron bearings in those style carriers.. both of them take LOTSA grease.

Soundguy

So is that thing I unscrewed from the lube tube some kind of greasing zerk? Do I pop the top off that part to get to the zerk?
Don't want to start beating on it until I have an idea of what it's for.

 

[Soundguy]

I didn't see the top of that hex head part that screws into the tube.. but does it look like it had a zerk in it at one time?

Also.. those threads look similar to a grease gun's hose thread..e tc.

Soundguy

 

[flusher]

I didn't see the top of that hex head part that screws into the tube.. but does it look like it had a zerk in it at one time?

Also.. those threads look similar to a grease gun's hose thread..e tc.

Soundguy

Made good progress on the lube job.

Removed the grease cups on the left rear gang which are useless because they're rusted shut. Fortunately the cups have 1/8" pipe threads so I could replace them with grease zirks from NAPA.

Pumped a lot of grease into those two bearings. Result: now that gang spins freely.One down, three to go.

Also have to replace three of the 20" dia blades on the right front gang. Gonna have a struggle getting that gang off. PB Blaster to the rescue.

 

[diyDave]

Those old style grease fittings were used on a lot of old caterpillar crawlers, till they figgered out that when you pump oil or grease into undercarriage parts, you are also pumpin dirt in too! They went to sealed bearings for that very reason. That disc might very well be an old crawler pulled unit used for construction, landfill etc.

 

[flusher]

Those old style grease fittings were used on a lot of old caterpillar crawlers, till they figgered out that when you pump oil or grease into undercarriage parts, you are also pumpin dirt in too! They went to sealed bearings for that very reason. That disc might very well be an old crawler pulled unit used for construction, landfill etc.

That wouldn't surprise me. I'll check with my neighbor again to see if he remembers where he got the thing.

 

[BTDT]

When you get ready to do the front, raise the rear on up a little, move your blocks up to the frame behind the front gang, and lower the rear. The weight of the rear and the fulcrum effect might be enough to raise the front. If not, stack the remaining/extra blocks on the top of the frame on the back till the front comes up.