Cub 42C-1 Belt Adjustment

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Baxter28
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Tractors Owned: 1953 F-Cub Serial No. 160499JL

Re: Cub 42C-1 Belt Adjustment

Postby Baxter28 » Sun Jul 09, 2017 12:33 pm

OK. Thank you all for the ideas. To answer some of the questions. The drive belt definitely leans forward from the PTO pulley to the two idler pulleys. The 2 idler pulleys are Woods cast iron items and are approximately 5" in diameter. The PTO pulley is on as far as it will go when mounted normally.

Did Woods make different diameter idler pulleys?

staninlowerAL
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Re: Cub 42C-1 Belt Adjustment

Postby staninlowerAL » Sun Jul 09, 2017 2:27 pm

Here's the resized photos I received from Baxter28. Alignment is probably the problem. Larger idler pulleys or find a way to shift the mule drive back to achieve the desired alignment.
IMG_8781.JPG
IMG_8782.JPG
IMG_8783.JPG

staninlowerAL
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Joined: Fri Oct 29, 2010 11:34 pm
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Tractors Owned: Cubs: (3)'49's, (1)'52, (1)'57 IH Cub LoBoy w/FH, (1)'72 154 Number Series Loboy, '76 Longstripe w/FH, Mowers: C-22, Bush Hog 412, Pennington 59, Woods RM42CF, Woods 42, assorted FCub plows, planters, discs, etc. OTHERS: '49 AC B & Ind. Sickle mower, '61 AC D12 Ser 2, '52 8N, '56 Ferguson 35 Deluxe, '53 MM BG (offset), (2) '49 Avery V's, '51 JD M (regular), '56 JD 420C, with Blade and fire plow, '85 JD 850 (Yanmar) w/72" belly mower, '76 Yanmar 1500, Sears Surburban's, MTD's, Jeeps & other misc. "treasures"
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Re: Cub 42C-1 Belt Adjustment

Postby staninlowerAL » Sun Jul 09, 2017 2:31 pm

Baxter28 wrote:The 2 idler pulleys are Woods cast iron items and are approximately 5" in diameter. The PTO pulley is on as far as it will go when mounted normally. Did Woods make different diameter idler pulleys?

Maybe the mule drive idler pulleys has been replaced in the past or it might be for another type application. Check with an auto parts for different size idlers.

Eugene
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Re: Cub 42C-1 Belt Adjustment

Postby Eugene » Sun Jul 09, 2017 2:50 pm

Idler pulleys appear to be to small. Will measure up the pulleys on my Woods 42 tomorrow, if no one posts the exact diameter.

Just got back from the acreage shop. 100 degrees heat index, sweat soaked, inside in the shade with the doors open, and a breeze.

You could take a tape measure and measure the distance from the current pulleys edge to a vertical line from the center of the pto pulley. Add twice that distance to the current pulleys diameter to obtain the required pulley diameter. I think that will work.

I purchased replacement idler pulleys for my Woods 42 from an internet featuring tractor parts.
I have an excuse. CRS.

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tmays
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Re: Cub 42C-1 Belt Adjustment

Postby tmays » Sun Jul 09, 2017 5:34 pm

Yep, agree idlers are probably the problem. Those idlers look to be about the size of the ones on my 154 loboy with woods 44" mower
Thomas

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Rick Spivey
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Re: Cub 42C-1 Belt Adjustment

Postby Rick Spivey » Mon Jul 10, 2017 5:13 am

Messicks has Woods idler pulleys, stamped steel, and says they are 7 3/8", which sounds more correct. However, they are around $37 each. I couldn't find another source of large idlers in about 30 minutes of net searches, so I will likely use Messicks when I go to replace a set I am using (which has a small pulley on the return, but it works for now).
Rick Spivey
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Eugene
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Re: Cub 42C-1 Belt Adjustment

Postby Eugene » Mon Jul 10, 2017 12:25 pm

Rick's description of the pulleys is correct, just measure mine.

I have two old pulleys removed from my 42 Woods. Rusty, bearing in one pulley is rough. Other bearing appears to be fine. You can have both pulleys for the cost of postage. If you want them, PM me with you name and postal mailing address.

The $75- cost of replacement pulleys is about what I paid several years ago.
I have an excuse. CRS.

Baxter28
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Re: Cub 42C-1 Belt Adjustment

Postby Baxter28 » Fri Jul 21, 2017 3:06 pm

Now for an update. I just installed a new v-belt, two 7" pressed-steel idler pulleys, and adjusted the PTO drive pulley. But, the v-belt is still jumping around and eventually coming off even though I think it is too tight. Here are some pictures of the over-running clutch drive sheave. If the "arms" of the sheave are broken as mine are, will this cause the belt to jump around like a rabbit?

http://www.farmallcub.com/phhttp://www. ... w&id=29412
Attachments
IMG_8835.JPG
IMG_8834.JPG
IMG_8833.JPG

Baxter28
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Joined: Sun Aug 14, 2016 11:11 am
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Tractors Owned: 1953 F-Cub Serial No. 160499JL

Re: Cub 42C-1 Belt Adjustment

Postby Baxter28 » Fri Jul 21, 2017 3:11 pm

Forgot to ask. Can this item be welded since I cannot find it listed anywhere online?

I mowed my 4 acre field about 4 times with my Cub and Woods 42C mower last year. This year I found 3 new cement blocks when I mowed it for the only time this summer. Since then I cannot keep the belt on the mower. I assume the freeze & thaw cycle moved the blocks out of the ground so I could find them. One of the hits was solid enough to stall the tractor. This hit either broke the pulley arms or helped them along greatly.

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Re: Cub 42C-1 Belt Adjustment

Postby Crimson Tim » Fri Jul 21, 2017 5:27 pm

The edges of cracks one and two look a little curled, like they've been knocking around for a bit. Crack three looks more fresh. How many intact spokes left? Two? I would suggest a high priority on fixing, as I'd bet this is flexing a fair amount and the remaining spokes will let go soon, too.

Castings are difficult to weld. It can be done, but you have to know what you're doing. Brazing would be a better bet in my opinion.

To sort-of answer your question, I don't know if the cracked pulley is the reason for the belt still jumping off, but it sure wouldn't surprise me at all if that problem disappeared when you fixed the pulley. I'd fix the known problems before going looking for unknown ones.

Baxter28
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Joined: Sun Aug 14, 2016 11:11 am
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Tractors Owned: 1953 F-Cub Serial No. 160499JL

Re: Cub 42C-1 Belt Adjustment

Postby Baxter28 » Fri Jul 21, 2017 6:52 pm

Actually, to my eyes it looks like all the spokes are broken. I can't believe it hasn't come apart.

Baxter28
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Re: Cub 42C-1 Belt Adjustment

Postby Baxter28 » Sun Jul 30, 2017 12:19 pm

I am gaining on it a little at a time. I repaired the cracked spokes on the P/N 3332 9.4" drive sheave. This helped but I am not home free as yet. I can still wobble the drive sheave on the top of the the cutter spindle so must assume that the P/N 3175 bushing are worn. Before I replace both bushing, I was thinking about going around the top and bottom face of each bushing with a center punch to remove some of the slop.

Do you think this method would work as a short term fix or a way to check on the bushing clearance?

One more question please. The book says to put 4 washers under the weather cap but this puts the cap a long way from the ratchet cap. Should I just use as many washers as needed to get clearance?

Baxter28
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Zip Code: 16137
Tractors Owned: 1953 F-Cub Serial No. 160499JL

Re: Cub 42C-1 Belt Adjustment

Postby Baxter28 » Sat Aug 05, 2017 11:12 am

Well, I just mowed my 4 acre field. I did tighten up the 42C mower bronze bearings with a center punch and removed a lot of the wobble. I also dressed up both sides of the ratchet dogs and this helped a great deal. During the winter I will need to replace both P/N 3175 bushing and a cracked P/N 3177 drive hex. The belt only came off about 4 times. Twice when I hit solid objects that should have knocked it off and once when I was too slow the raise the deck in real heavy grass/weeds.

As an engineer with 40 years of experience, I must tip my hat to the design engineers at Farmall and Woods. Their designs are so simple yet still functional. The basic Cub design is 70 years old and still going strong.

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tmays
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Re: Cub 42C-1 Belt Adjustment

Postby tmays » Sat Aug 05, 2017 12:36 pm

Personally I would look for another mower and use this one for parts
Thomas


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