Finding a seal for SMD live HYD pump

farmhand

Member
I have been trying to find a front seal for a SMD live Hyd pump. I have resealed our pump on the SMTA gas and thought the pumps where the same other than the SMD turned backwards. So I ordered the same parts only to find out the seal is larger on the front of the SMD pump than on the gas. Local dealers says that's all they show for the pump. The seal number is TPHP1-3-89 Chicago Rawhide. But when pulling those seals up they are not the same as came out the pump. Pump #363780 any help would be appreciated Thanks.
 
Take the old one to a Bearing house. Motion Industries, or Kaman, and match it up. If there is a groove in the shaft, select a seal that places the lip on a different spot, or use a Speedy sleeve repair. Jim
 
Already tried Motion Industries and they come up with a little Mickey Mouse looking seal that dose not even come close to what I have.
 
It will be a walk in and compare deal, not using the pump numbers, or tractor ID. I hope the Number in the other response is good. Jim
 
SKF7661 fits a 0.750 shaft, OD is 1.828 and is 0.250 thick. Measure your pump and see if this seal is going to fit.
 
You have a Thompson pump and it depends on the R suffix on the pump for the seal. If the rear seal is smaller than the front the front seal number was 363781R91.
Don't know if these numbers are still good but wrote down in the past I used a National 473412 or a CR 8842 for that seal. Also the seals were used to replace the same number you had in the pump.
Pump was probably changed sometime, because it probably came with a Pesco pump if originally on a SM.
Just looked at messicks site. They have a picture of # 363781R91 with CR 8842 on the seal. Can't remember for sure but thinking I preferred the national seal the last time. But everyone is always changing quality of the parts they make. So not sure on the present.
 
Thanks guys this is the numbers and demenitions I need to get the seal I am looking for. Local dealer not much help if they can,t find it right away.
 

We sell tractor parts! We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today.

Back
Top