seal for post hole digger

   / seal for post hole digger #1  

cedar21

Bronze Member
Joined
Jan 21, 2017
Messages
92
Location
Oak Harbor, Washington
Tractor
New Holland TC 30
I got a post hole digger at an auction, and am trying to find a seal for the input shaft. I think the post hole digger is made by Five Star, and they are not in business any more. Wondering if someone here might have an idea of how I could get another seal for it. Am attaching photos of the post hole digger, and the housing that that the seal is in.
 

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   / seal for post hole digger #2  
I think that might be a 5 STAR "Mark 3" model . I think 5 Star no longer in bizz .
Try these people next week : Our Parts - DN Equipment
 
   / seal for post hole digger #3  
I got a post hole digger at an auction, and am trying to find a seal for the input shaft. I think the post hole digger is made by Five Star, and they are not in business any more. Wondering if someone here might have an idea of how I could get another seal for it. Am attaching photos of the post hole digger, and the housing that that the seal is in.

Should be able to clean and use auto type liquid seal available at auto zone or advance auto . If it did still leak a bit just pump it full of grease .
 
   / seal for post hole digger #4  
I got a post hole digger at an auction, and am trying to find a seal for the input shaft. I think the post hole digger is made by Five Star, and they are not in business any more. Wondering if someone here might have an idea of how I could get another seal for it. Am attaching photos of the post hole digger, and the housing that that the seal is in.

Those seals are called radial shaft seals. SKF and Parker are just two of many manufacturers that you can go to. You need to know the bore diameter of the housing, the shaft diameter and the depth of the housing bore.
 
   / seal for post hole digger #5  
You can take the old seal to an auto parts store, or a bearing suppier, industrial supply house, tractor dealer, etc, and they can match it for you. You probably don't even have to take it out of the housing if you don't want to risk damage before you find the replacement.
 
   / seal for post hole digger #6  
With inner and out dimensions you can go to almost any i-net site that specializes in seals and bearings and cross reference dimension numbers to parts number an order accordingly..... Did something similar with TUFF-TORQ transaxle seal for axle on my JD mower and found out I can get same seal (generic) for about 1/4 the price of JD....

http://ph.parker.com/us/en/rotary-shaft-seals

Radial shaft seals

Might try cleaning grease off outer rim of seal and see if any numbers etched/stamped in metal body...

Dale
 
   / seal for post hole digger
  • Thread Starter
#7  
I have not tried removing the seal yet. Wanted to be sure that I will be able to find a seal first. Good idea about looking for numbers.

Thanks for all the advice.
 
   / seal for post hole digger #8  
Typically if you remove the seal you will find the size or part umber on the face of the seal, go ahead and take it out and let me know what it says and I should have it in stock.
Thank you,
Brian - Brooks AG Parts
513-715-0532
 
   / seal for post hole digger
  • Thread Starter
#9  
I removed the seal, but there is no part number on it. The outside diameter of the seal is 1.75 inches. Inside diameter is 1.25 inches. Thickness is approx. 3/8 inch. Have not been having luck finding a seal locally. Waiting to hear back from Parker to see if they might be able to help.
 
   / seal for post hole digger #10  
I stock a replacement seal 1-3/4" OD, 1-1/4" id, AND 1/4" thick, CR# 12364, they are $4.32 plus shipping which would be about $3.00. Looks like I have 20 in stock.


Thank you,
Brian Brooks - Brooks AG Parts

513-715-0532
 
   / seal for post hole digger
  • Thread Starter
#11  
I was able to get a seal today that seems to be working. The inside diameter was slightly smaller than the old seal, but I was able to get things back together.

One more question though. The post hole digger has a filler hole on top of the gear housing, though there is no hole to check the oil level. How full should the gearbox be filled with oil?
 
   / seal for post hole digger
  • Thread Starter
#12  
I stock a replacement seal 1-3/4" OD, 1-1/4" id, AND 1/4" thick, CR# 12364, they are $4.32 plus shipping which would be about $3.00. Looks like I have 20 in stock.


Thank you,
Brian Brooks - Brooks AG Parts

513-715-0532

I may order one of your seals to have a spare on hand. Thank you.
 
   / seal for post hole digger #13  
One more question though. The post hole digger has a filler hole on top of the gear housing, though there is no hole to check the oil level. How full should the gearbox be filled with oil?

75 per cent of pumkin houseing full , so you do fill it up complete and create unnesary pressure and blow gasket etc . Its also good to see from one of your pics your pto shaft cover protector looks in great shape . They should have a little chain on them to keep cover from spinning .
 
   / seal for post hole digger #14  
Post hole digger seals take a beating. Use Corn Head grease from John Deere or look for polyurea EP #0 grease.
 
   / seal for post hole digger #15  
Post hole digger seals take a beating. Use Corn Head grease from John Deere or look for polyurea EP #0 grease.

I have had good luck with Cornhead grease on gearboxes. I have said before, they should come that way from the factory.
 
   / seal for post hole digger
  • Thread Starter
#16  
I used GL 1 90 Gear Oil 80W90 in the gearbox. So far the new seal seems to be working.
 
 

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