48 inch GT deck greasing

pinehillian · #1 03-22-2020, 05:33 PM

Hey all,

I have 1641 2 yrs now and everything perfect. mine has 48in GT 3 blade deck, (pictured). All 3 grease zerks on deck wont take grease and never did since i owned it. The center zerk, I unscrewed and put in gun, grease squirts threw it fine, put back in and nothing. The left and right zerks don't even have hex for wrench or socket? They are pressed in maybe? Someone told me heat them up to loosen old grease (with little propane torch), so i tried that and got maybe 2-3 pumps in each. One guy said, oh just replace the 3 spindles. That's not an option, i don't have 2 nickles to rub together right now. Some one else told me their maybe sealed from factory and don't need grease, but there's zerks. Any help would be great.

Thanks in advance and happy spring,

Sam Mac · #2 03-22-2020, 06:06 PM

Loosen the nut that holds the blade on, grease it then tighten the nut. BTDT

Mike McKown · #3 03-22-2020, 06:23 PM

The zerk fittings are supposed to be pressed in. No hex for a wrench. Often, when a zerk won't take grease, some heat applied will get the grease flowing. Some take more heat than others.

You don't need to replace the spindles.

But, there is always the possiblity someone put the bottom grease seal in upside down. That means the seal lips face up instead of down. If that's the case, you bearing case will hydro lock and won't get grease in there unless you blow the seal out or turn it upside down like it's supposed to be.

pinehillian · #4 03-22-2020, 06:39 PM

thanx guys, i had all blades off during the heating and pumping process, when i stuck peace of wire in the center removable zerk seemed like lot of grease in there but wouldnt take any more. the guy who told me they are sealed said if i do all these things i will blow seal out?

Mike McKown · #5 03-22-2020, 07:55 PM

Quote:

Originally Posted by pinehillian

thanx guys, i had all blades off during the heating and pumping process, when i stuck peace of wire in the center removable zerk seemed like lot of grease in there but wouldnt take any more. the guy who told me they are sealed said if i do all these things i will blow seal out?

If the bottom seal is installed correctly (lips faced down, not up) you won't blow the seals by pumping more grease. That is the design. Pump in grease, excess blows past the inverted seal lips on the bottom side.

If he told you that, reinforces my thoughts that the seals are inverted. I could be wrong.

Cannon51 · #6 03-23-2020, 06:00 AM

This is a thread from a few years ago when I had one of my decks apart.
https://www.onlycubcadets.net/forum/...ghlight=Cannon
Post #2 shows a picture of the bearings, post #11 shows all the spindle parts laid out. I remember buying a pack of the drive in fittings but don't remember if I replaced the ones in the spindles or just the bad one on the idler.
Cannon

pinehillian · #7 03-23-2020, 12:37 PM

thanx all, not to be smart but im pretty mech inclined but little more confused now. basically if you guys had this deck what you would check first? seals up or down?

Mike McKown · #8 03-23-2020, 01:36 PM

If you really did get a couple of pumps of grease in (instead of pumping air), I'd check the bottom seals. Pull the blades. It's right in front of you.

pinehillian · #9 03-23-2020, 03:47 PM

thanx mike, i will remove blades again. when i had them off last week blade came off then cups i guess to keep crap out. i think it looked like back side of the bearing, dont remember seeing seal between bearing and that cup. will look again

Sam Mac · #10 03-23-2020, 05:20 PM

If it was my deck considering what you have tried I would disassemble the spindles, clean the parts, inspect and replace as needed. Download one of the deck service manuals from the tech library, most of the spindles are all the same. This is how they go together.