350bb final drive oil fill hole

[ozzie]

350bb lift crawler s#1491521: Have finally got by belly counter off to ck
my final drive oil .power washed the entire final clean.can only find the drain plug(no others for filling) J/d dealer unable to help.Anyone out there know how else to ck the oil.book says it is directly above the drain.SORRY it is not there HELP!

[LeonardL]

Look on the inside of the final drive housing itself up above the pan to either side of the drive axle bearing cover. Should be a 1/2 inch pipe plug on both sides of the cover and is removed with a 3/8" drive ratchet or break over bar. The inside of the final is the side that faces the belly pan / counter weight.

[Lavoy]

Same story on one we have, no fill plugs. Only think I have ever come up with is the finals have been replaced with later finals that don't have the plug. We had to trickle the oil in through the pinion shaft hole.
Lavoy

[ozzie]

Absolutely no fill plugs anywhere ! thanks!

Lavoy where is the pinion shaft hole ??? How do you determine when
final drive is FULL of oil with correct amount ??? Thanks!

[ozzie]

Hurray! the machine has a winch on it ,as a last resort I loosened winch bracket under machine.I can see the PLUG underneath the bracket.
F/D oil capacity and oil specs. ????? Yes I do have books ,BUT cannot find them at present. Thanks again !!!!

[LeonardL]

The fill plugs I told you about are there... Believe me... Remove both of them and fill until your oil just starts to run out of the second hole. Or you can remove one the plugs and fill through the outer pinion bearing cover as Lavoy has suggested. It is located towards the top of the final drive, right in behind the top of the track. Remove the cover... usually two bolts and one nut with a stud holds it in place. Then fill in between the pinion gear and the housing once you have removed the cover. You will want to use 80 /90 gear oil or you can also use Hy-guard TH fluid or 303. If you live up North where it is colder than the rest of us you might want to use the thinner oil. 350C's and 350D's use the 303 oil in the entire system. They have basically the same final drives as far as the gear set up.
Some models came with pans that had two plugs in them and you filled them to the top hole in the pan. I have no clue why Deere did this other than they just wanted to.