From the AgTalk forums:
fixitguy
Posted 3/24/2024 17:26 (#10678302 - in reply to #10677876)
Subject: RE: New Holland LS170 Skid Steer Gearbox Fill
Gillett WI
Some models didn't have a fill, it got oil from the chain case. Not sure what models, they had a trough in the chaincase...
I am trying to figure out where you fill the gearbox oil at. From the pictures that I've seen of other New Hollands and even in the service manual it shows a sweeping elbow at the bump out. I found what seems like the drain plug, as it is at the very bottom the gear box and started dumping oil...