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  #1  
Old 05-21-2019, 09:34 PM
suburban man suburban man is offline
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Default Cub cadet 100 questions

I acquired a 1964 Cub 100 that is very original, I have been using several years. I have a couple questions.

1. The hood reinforcement cracked where it mounts to the side. I'm thinking of MIG welding it quickly, and keep iced towel on outside of hood to try and preserve original paint?

2. When I'm using it around yard and put it down to idle to unload a cart or such its very difficult to get driveshaft to quit spinning. I wait, and wait. Is there a brake, or is my gearbox oil to thin? what gear lube should be used?

3. What oil? I'm currently running a non detergent 30 weight from Autozone...only non detergent around.

4. Just an observation....2nd gear to slow mowing and 3rd is to fast....real wide space in ratios

5. Sometimes I get a rattle/metalic/whine that when it starts is actually dragging idle of engine down. Would the PTO binding or miss adjusted? Usually when tractor is at idle in neutral I hear it.

Well I am certain I have more and thanks for any input.!
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  #2  
Old 05-22-2019, 07:19 AM
R Bedell R Bedell is offline
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(1) What ever works for you.

(2)
Quote:
Is there a brake, or is my gearbox oil to thin? what gear lube should be used?
No brake that I am aware of. The Transmission oil would be one of two. (A) SAE 30, or (B) Hytran

(3) SAE 30 is what is recommended. If you want to take it a step farther, Kohler recommends SAE30 "Low Ash" oil.

(4) Can't help you there.

(5) Only speculating, might be the PTO anti-rattle clips are missing.
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  #3  
Old 05-22-2019, 08:05 AM
Merk Merk is offline
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#2
Sounds like the pilot bushing in the driveshaft or the anti rattle springs are not allowing the clutch to release like it should. I'm not a fan of using anti rattle springs. I use HyTran oil in my IH Cub Cadets.

#3
I use Kohler engine oil in my IH Cub Cadets.

#4
Your 2nd gear is a 16 tooth gear. The later IH Cub Cadets 100-70s had a 19 tooth 2nd gear. I have one with a 19 tooth gear and it is too fast to mow. The 1X6 or 1X8 series has a 17 tooth 2nd gear. It is a easy change. You have to take transmission apart to change gears. 16 tooth speed is 2.9 miles per hour. 17 tooth speed is 3.5. 19 tooth speed is 3.9 miles per hour.

I have a 64 model IH Cub Cadet 100 with a 16 tooth 2nd gear and a 1965 model IH Cub Cadet 100 with a 19 tooth. 19 tooth is too fast and the 16 tooth is just about the right speed for mowing my thick grass.

#5
Odds are the rattling you are hearing is the holes in the clutch disc are showing signs of wear. The clutch driver pins and pilot bushing could be showing signs of wear too.
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Old 05-22-2019, 11:11 AM
NealC NealC is offline
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Quote:
Originally Posted by Merk View Post
Your 2 gear is a 16 tooth gear. The later IH Cub Cadets 100-70s had a 19 tooth 2nd gear.
This is quite interesting, didn't know that.

Did the change in gear ratio for second happen exactly at the change from '64 to '65? (i.e. Jan 1) Or, is there a serial number point known when this occurred?

Hope I'm not hijacking too much, but it is relevant to suburban man's original question.
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  #5  
Old 05-22-2019, 01:36 PM
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sorner sorner is offline
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For #5, I had a 100 that made a weird whining sound when it was running, and it turned out that the starter generator had dry bearings. I took it all apart and cleaned it up and put a little grease in there where the shaft goes at both ends and it fixed it right up.
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  #6  
Old 05-22-2019, 02:46 PM
Merk Merk is offline
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Originally Posted by NealC View Post
This is quite interesting, didn't know that.

Did the change in gear ratio for second happen exactly at the change from '64 to '65? (i.e. Jan 1) Or, is there a serial number point known when this occurred?

Hope I'm not hijacking too much, but it is relevant to suburban man's original question.
Good question

Not sure when the 2nd gear ratio was change. I have a 70 that has a serial number 105XXX that has a 19 tooth gear.

This is same trans was used in the Farmall Cub. It has different axle housings and gear shifter.
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Old 05-22-2019, 02:48 PM
Merk Merk is offline
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Quote:
Originally Posted by sorner View Post
For #5, I had a 100 that made a weird whining sound when it was running, and it turned out that the starter generator had dry bearings. I took it all apart and cleaned it up and put a little grease in there where the shaft goes at both ends and it fixed it right up.
Good place to look.
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Old 06-01-2019, 05:44 PM
suburban man suburban man is offline
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The Generator bearings just may make sense I will have to take a look...Are they sleeve bearings? I would have never thought 30 weight in the gearbox. maybe clutch wear or alignment is providing just enough drag to let it spin gears over so its hard to engage quietly? Thanks for all the responses....This thing is a tank same age as my wife! should outlast both of us
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Cub Cadet is a premium line of outdoor power equipment, established in 1961 as part of International Harvester. During the 1960s, IH initiated an entirely new line of lawn and garden equipment aimed at the owners rural homes with large yards and private gardens. There were a wide variety of Cub Cadet branded and after-market attachments available; including mowers, blades, snow blowers, front loaders, plows, carts, etc. Cub Cadet advertising at that time harped on their thorough testing by "boys - acknowledged by many as the world's worst destructive force!". Cub Cadets became known for their dependability and rugged construction.

MTD Products, Inc. of Cleveland, Ohio purchased the Cub Cadet brand from International Harvester in 1981. Cub Cadet was held as a wholly owned subsidiary for many years following this acquisition, which allowed them to operate independently. Recently, MTD has taken a more aggressive role and integrated Cub Cadet into its other lines of power equipment.

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