Kubota T1880 Won't Drive

Pat_USA

Member

Equipment
Kubota T1880
May 8, 2026
76
15
8
Missouri
If you can find the old bolt they can help you size the correct tap and drill and the new bolt. Get their advice and order whatever they don't have from amazon
[/QUOTE]

I have many local hardware stores nearby, but I don’t understand this part because it’s impossible to find a “counterclockwise bolt”, "counterclockwise tap & die" locally. Do you mean any regular “clockwise bolt” of the same size or slightly larger? Could you explain in more detail (your last 3 comments)? I know local auto retailers like AutoZone offer free rental tools such as Tap & Die, but all of them are clockwise.
 

Caden

Active member

Equipment
1979 B7100
Apr 16, 2026
351
196
43
Virginia
All this can be had on amazon, probably less than $40
The post you quoted was in regard to a LH helicoil kit, which I could not find on amazon. It was not regarding your video I don't think.

If you see one for the price you throw out, then provide a link to it.

The bolt size is M12x1.25 as mentioned numerous times previous.

I agree with @PoTreeBoy 's thoughts in his latest post.
 
  • Like
Reactions: 1 user

PoTreeBoy

Well-known member
Lifetime Member

Equipment
L35 Ford 3930
Mar 24, 2020
4,030
2,484
113
WestTn/NoMs
I have many local hardware stores nearby, but I don’t understand this part because it’s impossible to find a “counterclockwise bolt”, "counterclockwise tap & die" locally. Do you mean any regular “clockwise bolt” of the same size or slightly larger? Could you explain in more detail (your last 3 comments)? I know local auto retailers like AutoZone offer free rental tools such as Tap & Die, but all of them are clockwise.
1. 'Counterclockwise' bolts are more commonly called left-hand. They are rare, used only in special cases like yours. Fastenal, a large supplier of bolts, doesn't carry them, so you're extremely unlikely to find them locally. I found an on-line store that specializes in left-hand fasteners; they had an M12x1.25 bolt for ~$50 and it probably wasn't the length you need. So, IMO, your solution needs to include the LH bolt from Kubota.

'Clockwise' bolts, commonly called right-hand thread, are standard in the vast majority of uses, just not this one area.

2. Do not even think about using a right-hand bolt/threads of any size in this location. The blade won't stay tight.

3. If you decide to remove the pulley as I suggested in post #120, the nut holding it on is right-hand; turn it counter-clockwise to remove.

To review, we are dealing with the blade on the left side as you're sitting in the tractor seat with the deck mounted to the tractor, correct? Let us know what your dealer says, and let's check the belt routing when you get the spindle fixed.
 
  • Like
Reactions: 1 user

hagrid

Well-known member
Lifetime Member

Equipment
K1600GTL, ZX-14R
Jun 11, 2018
1,227
1,850
113
Pittsburgh
As a result of the goings-on in here I have ordered a tap and die (right hand) to chase my deck threads.

I've had an issue before with a spindle bolt snugging up early and it was because a bolt thread was getting ragged. I dressed it with a triangular file.
 
  • Haha
  • Like
Reactions: 2 users

Pat_USA

Member

Equipment
Kubota T1880
May 8, 2026
76
15
8
Missouri
1. 'Counterclockwise' bolts are more commonly called left-hand. They are rare, used only in special cases like yours. Fastenal, a large supplier of bolts, doesn't carry them, so you're extremely unlikely to find them locally. I found an on-line store that specializes in left-hand fasteners; they had an M12x1.25 bolt for ~$50 and it probably wasn't the length you need. So, IMO, your solution needs to include the LH bolt from Kubota.

'Clockwise' bolts, commonly called right-hand thread, are standard in the vast majority of uses, just not this one area.

2. Do not even think about using a right-hand bolt/threads of any size in this location. The blade won't stay tight.

3. If you decide to remove the pulley as I suggested in post #120, the nut holding it on is right-hand; turn it counter-clockwise to remove.

To review, we are dealing with the blade on the left side as you're sitting in the tractor seat with the deck mounted to the tractor, correct? Let us know what your dealer says, and let's check the belt routing when you get the spindle fixed.
I know that’s why I kept mentioning counterclockwise (or left-hand threads), I think people will understand it better with "counterclockwise". I know I can’t find the LH thread anywhere, especially locally, except through a dealer, and they don’t keep it in stock since it rarely sells—they had to order it specifically for me. You won’t find it on Amazon, only in specialty stores that carry it.
 
  • Like
Reactions: 1 user

Caden

Active member

Equipment
1979 B7100
Apr 16, 2026
351
196
43
Virginia
I know that’s why I kept mentioning counterclockwise (or left-hand threads), I think people will understand it better with "counterclockwise". I know I can’t find the LH thread anywhere, especially locally, except through a dealer, and they don’t keep it in stock since it rarely sells—they had to order it specifically for me. You won’t find it on Amazon, only in specialty stores that carry it.
@Pat_USA I think your only option for LH helicoil equipment is that link I gave you last night. But since it's so expensive, I feel you should first check with the dealer about a new spindle shaft pricing.
 
  • Like
Reactions: 1 user

Anil8tor

Member

Equipment
BX2660 Loader 60"belly mower
Jul 16, 2026
27
42
13
Ohio

Here are links to:
Tap $20
Bolt $9.00
Drill bits $12
Tap handle $15
Total : $56

This is for M14 the next larger bolt size

I have a real desire to help where ever I can, But this is advice, use it or not its your call.
There are a lot of other people offering advice as well, some no doubt are smarter than me. In the end its your decision as to which or none you follow
 
Last edited:
  • Like
Reactions: 1 users

Pat_USA

Member

Equipment
Kubota T1880
May 8, 2026
76
15
8
Missouri
Good news!

I stopped by Kubota just before 4:00 pm, and all the mechanics had left except the supervisor. They’ll rethread it, but they won’t know the price until it’s finished. I’m guessing they charge by the hour. Tomorrow, I’ll look for a blade and hopefully get lucky finding a bolt and washer too. :p
 

Pat_USA

Member

Equipment
Kubota T1880
May 8, 2026
76
15
8
Missouri

Here are links to:
Tap $20
Bolt $9.00
Drill bits $12
Tap handle $15
Total : $56
This is for M14 the next larger bolt size

I have a real desire to help where ever I can, But this is advice, use it or not its your call.
There are a lot of other people offering advice as well, some no doubt are smarter than me. In the end its your decision as to which or none you follow
I really appreciate everyone’s help; your time and input are very valuable to both you and me. Since Kubota will rethread it, I still have to use the original equipment, so I don’t have to make a tough decision right now. The diameter of the blade might also be smaller than the larger bolt.

I send my kisses to all of you, so please grab and accept them. 🥰😍😘💋
 
  • Haha
  • Like
Reactions: 1 users

Russell King

Well-known member
Lifetime Member

Equipment
L185F, Modern Ag Competitor 4’ shredder, Rhino tiller, rear dirt scoop
Jun 17, 2012
8,039
3,163
113
Austin, Texas
It’s a bit too complicated for someone with limited experience, but I’ll understand it someday.
Emoji
If you are interested in understanding you can read through this article that shows pictures of the three tap types and discusses how they work.


Also I saw reference to Helicoil kits that you might have thought were for tapping the existing hole. Those kits are for thread repair but the tap included in the kits are larger diameter than the original threads. So don’t try to use just the tap out of a Helicoil kit to restore the existing threads.

I see that you have decided to have the dealer repair the threads in the existing shaft so most of this post is now not helpful but just giving you information. I think you have made the right decision in this case.
 
  • Like
Reactions: 1 users

Pat_USA

Member

Equipment
Kubota T1880
May 8, 2026
76
15
8
Missouri
I swept the backyard with a 12" magnetic sweeper, which took a lot of time, and confirmed that I didn’t find it. The last time I finished cutting the yard, it was already dark, so I didn’t look for it, and I feel it’s also his responsibility (the mechanic) to help me search. I can’t remember if I walked through my backyard to look for it since it’s been a while, but I know when I trimmed the yard with the trimmer (maybe over a month later because the grass was high), I should had seen it, yet I never did. The weather was extremely hot at that time, and I used an Ego trimmer with a 5-amp battery lasting almost 30 minutes because the weeds were so thick and tall. It used a lot of battery power to get the job done. I usually cut only once in late evening, but I cut twice a couple of times, so it took me a week to finish. the whole yard. When I was done, the weeds in the first area were already getting tall again, and I realized the trimmer head was worn out—you could see the string inside so I ordered a new trimming head online—and it's about time for my second surgery coming up,



My theory is that I’ve had problems with thieves at my house for over 20 years, and the police won’t believe me. They’re (THE THIEVES) not just smart, but they are genius-level, able to bypass my alarm system. I have tons of cameras from different brands, motion sensors, door sensors, even trail cameras and hidden cameras, yet I’ve never caught them on tape. They’re knowledgeable in many fields and can pick high-security locks. They don’t just steal; they also sabotage my items. They come to my house pretty often when I’m not home or even at night while I sleep. I know it sounds unbelievable, but if anyone can help me catch the thieves by any trick or means, I have a good reward (and more if I can sue the city/Police) because I want to put them in jail where they belong and prove my story is real, hoping I can sue the police for damages since they don’t do their job. They (the thieve) must have taken this blade because they knew I needed it. When the mechanic removed the decking and left it overnight (to buy the belt to replace it the next day), I covered the mower with a big-size grill cover as I always do when I finish cutting my yard to protect it from the elements & the thieves.

I should get my mower back next week with new blade set, bolt & washer. I will also check the other thread if it needs to be rethreaded. I believe I can install new deck belt, replace the blades & put it back, It might be a little challenge for me since the deck is heavier than me. But I did replace the fuel pump & the fuel tank on my 94 Chevy by myself from watching YouTube because the mobile mechanic would not do it without a lift.

Let me go out of another topic to ask for your help:

My 94 Chevy wouldn’t start—no noise, no crank, no dashboard lights. The day before, the windshield wiper motor seemed to stop working during the rain when I got home, I let it run because I would be out again shorting & the motor work. It’s not the battery. From what I’ve read, I think it’s an electrical issue. Last night, when I crawled under the front of the truck, I was shocked to see a lot of oil covering the bottom of the components. Today I disconnected the OCU wiring and battery for over 30 minutes, then reconnected them. When I put the key in the ignition, there was noise and the dash lights came on, but as soon as I tried to start it, I saw one spark under the hood and it died again—back to no noise. Could the oil be causing this problem? Should I replace the starter, the OCU (which is expensive), or something else? I don’t think it’s the starter relay since I swapped it in before in the past with no change and put the old one back.
 

Attachments

Pat_USA

Member

Equipment
Kubota T1880
May 8, 2026
76
15
8
Missouri
I can attached only 10 files. You might can't tell, it's wet. But it's wet, some you can tell, it's wet & dirty. It's not like these before, my truck pretty dry & not oil stain on my driveway but now several oil stain but he does not care, he said I should not expect 100%, LOL. My truck does not leaks oil before but it leaks after he worked on it, it's the same guy who fixed my Kubota.
 

Attachments

Caden

Active member

Equipment
1979 B7100
Apr 16, 2026
351
196
43
Virginia
Well, oil on the starter is not good, but if you loose all other electrical componets like the radio and dashboard lights, also, then it sounds like the problem is unrelated to the starter.

To me, sounds like you have a bad ground, or bad connection on one of your battery cables.

Likely when you unhooked for the ecu reset, you jostled some bad connection just enough to change something but when you tried to start it, that bad connection failed again.

Just my guess. But I'm a Ford guy :unsure:


You say you think it was the man's fault after he worked on it. What work did he do that leads you to believe this?

I have a 1984 Ford truck. It stays damp with oil, but only drips now and again. It doesn't bother me much, no leak major enough for significant oil loss.
 
  • Like
Reactions: 1 user

Russell King

Well-known member
Lifetime Member

Equipment
L185F, Modern Ag Competitor 4’ shredder, Rhino tiller, rear dirt scoop
Jun 17, 2012
8,039
3,163
113
Austin, Texas
Yes it sounds like a battery cable issue to me also. The starting place for that is to remove the ground cable at the battery, then the positive cable. Clean both the battery posts and the inside of the cable terminals. I would also try to find where the ground cable attaches to the truck frame or engine and clean it also. Then tighten the cable connection to the frame and to the starter if you can easily get to them. Then install the positive battery cable end and tighten it, then the ground and tighten it. If the cables are old they may be stretched out and not clamping the battery posts very well. If that is the case, you should replace the complete cable (not install any type of cable end clamp that will corrode soon).

They sell battery terminal brush tools to clean the battery terminals and posts. A auto parts place might actually clean them for you if you ask. There is also a spray to keep the cattery cables from corroding.

You can probably get an inspection at a repair shop to see where it leaks at. And they could give you an estimate for how much it would cost to fix the leak. Sometimes it is as simple as tightening the valve cover bolts. But tell us what was fixed and we may be able to help find it.
 
  • Like
Reactions: 1 user

Pat_USA

Member

Equipment
Kubota T1880
May 8, 2026
76
15
8
Missouri
My common sense tells me it’s because of the oils that cause these problems. I just wanted to take as many pictures as I could, even if some ended up being repeats, just to show how much oil covers all of these parts under the truck.
 

Attachments