Mahindra 2638 hst front diff.

   / Mahindra 2638 hst front diff. #1  

apeckham

New member
Joined
Oct 19, 2023
Messages
8
Tractor
Mahindra 2638
Hi all, I own a 2019 2638hst and to me the front differential seems very noisy. This is while running it in mid range 2 wd . I checked the oil in it and it was ok.
Does anybody else have this issue with their tractor?
 
   / Mahindra 2638 hst front diff. #2  
Mine seems noisier if in 4wd and moving in mid range but in 2wd is pretty quiet.
 
   / Mahindra 2638 hst front diff. #3  
Mine "whines" at lower engine RPM's and under load (uphill, or towing something heavy). If I ramp up the RPM's to 1600+ it's not near as noticeable. I think it's inherent to an HST, since everything is run by hydraulics.
 
   / Mahindra 2638 hst front diff. #4  
don't think a differential is hydraulic-
Also this is one good thing about a manual trans vs hyd- it might bump a little going into gear, but gear drive! Only thing that is hydraulic are the 3pt arms and FEL
 
   / Mahindra 2638 hst front diff. #5  
What’s the maintenance history? Might be worth changing the oil. If UTF switch to a gear lube…or vice versa.
 
   / Mahindra 2638 hst front diff. #6  
My Mahindra requires using Trans-hyd oil in front differential, gear lube might not be good if you live in cold area. Also have you followed the schedule for changing the oil?
 
 
Top