Greasing a Max II left rear inner bearing

[ARGOJIM]

oops

[Hideous 4x4]

I'm no grease zerk expert; far from it. But I noticed something about their sizing that baffles me. The 1/8"-27 size zerk is about twice as big as the 1/4"-28 size. I wonder why since a quarter is bigger than an eighth?

The 1/8" is pipe thread the 1/4" is bolt thread. The zert should be the same just different size threads.

[onefunzr2]

grease hose extension2.jpg

The grease hose extension arrived via Priority Mail yesterday and I installed it promptly. Also shown in the above pic is the 1/4"x28 adapter and the right angle fitting.

grease hose2.jpg

There were a few tense moments clocking these fittings into the right position. Commy chinese steel and all. But nothing broke or cracked and I pumped the bearing full of grease, the red stuff from Tractor Supply. Not surprisingly, no old grease came out first.

IMG_13352.jpg

I drilled a small hole into the frame channel to keep the hose from flopping around while under power. Don't want it getting caught up into the chain and sprocket. I might be able to lube both rear inner bearings from now on without lifting the upper body for access.

[msafi65]

1/8x27 is 1/8" pipe thread. 1/4x28 is the same as fine thread bolt. Early max is kind of a guess as to weather it has inner zerks. The 2s with inbord bushings don't have any from the factory. I've seen 4s as new as 95 with plain bearing flanges inbord. That being said if I remove the inner bearings it gets a greasable flange and bearing.

[JoeMeg]

"I'm no grease zerk expert; far from it. But I noticed something about their sizing that baffles me. The 1/8"-27 size zerk is about twice as big as the 1/4"-28 size. I wonder why since a quarter is bigger than an eighth?"

It may due to one having a check ball and spring vs. not?

[onefunzr2]

The 1/4x28 adapter fittings are spendy but make a very nice install.

$3.65 for one little adapter fitting IS spendy. But not out of line compared to generic fittings in a hardware or auto parts store. At least this one won't come encased in a child-proof blister pack. I only ordered one so I better not break it.

[hipowerone]

So, you are saying MAX's older than 1997 did not have inner bearing zerks? Just wondering if I should open the tub and look or not.

[msafi65]

The remote fittings are common in the mechanical trade where big bearings are inside fan units hidden from safe access. The 1/4x28 adapter fittings are spendy but make a very nice install. Early max didn't have greasable inner bearings. Haven't seen any newer than 97 without inner zerks.

[hipowerone]

Neat idea, extensions for hard to reach fittings...I may have to look into these

[onefunzr2]

I surfed the interweb and found:

GreaseExtensionHoses.com

in New Jersey...one stop shopping for all my needs that Recreative Industries failed to include with their Max II build. I ordered a 1' long hose; no matter what length they are all fitted with 1/8"-27 male on one end and 1/8"-27 female on the other--the inside tubing is 1/8" diameter. Also needed was an adapter to go from the hose to the 1/4"-28 size of the bearing. And a 90* fitting to make sure the hose didn't kink. The hose lengths start at 8", 12" and 18" but they're all $24 each, give or take a few cents. Pricey to say the least. But there are no bearing stores in my neck of the woods.

I'm no grease zerk expert; far from it. But I noticed something about their sizing that baffles me. The 1/8"-27 size zerk is about twice as big as the 1/4"-28 size. I wonder why since a quarter is bigger than an eighth?

Now I wait for the post office to get in gear to deliver my Priority Mail. They have off today for Presidents Day.

[dgeiman]

good point in reference to vehicle bearings I did not look at it that way

[dirtdobber]

Also for what its worth.....different machine.....but my Hustler does not have grease fittings on the inner bearings. As long as they stay in the dry, are full of grease to start with, and in good mechanical shape (i.e. seals intact) I don't think greasing the inner bearing is critical. Think about the wheel bearings on many vehicles today - they aren't serviceable or they don't get serviced (disassembled and repacked) for what...100,000 miles or more?

[dgeiman]

Let me throw this in the mix. My max IV has no grease fittings on the inner bearings and I did not see anything about that in the manual I down loaded. Should they have them on the inner bearings? I grease the outer one about every 20 hrs.

[hipowerone]

When I first got my used 1996 MAX II back in Nov 2015, I inquired to one of the "Internet Dealers" for a lubrication chart to make sure that I had a list of all the lube points as there was nothing in the user manual....I got the Internet version of a puzzled look, I.E., "no response". I am sure others know what I am referring to. Even my 20 year old tractor has a down loadable user manual, and it has pages included that have both a lube point chart and a lube frequency chart. I wonder why RI MAX never included something of the like. If you did not think about it, you would not even look for some grease points.

[msafi65]

I use a 36" flex hose on my grease gun. With that and several right angle and needle type fittings I get them done. Buffalo truck and 2 have some that are tough. If you go to the work to access it Idd change out the zerk for a tubing fitting and locate the zerk at rear of frame where it's easy to see. Most bearing supply houses have the fittings and tube for remote lubrication. Oh and i end up with a mirror laying in the tub many times to see the fittings. Good luck