S
Scot Kight
Guest
I believe I have a classic case of transmission whine. No sound at idle,
nothing more than I would expect on a D-R clunk, no driveline lash, but when
under power and driving a whining sound can be heard from the transmission
tunnel/passenger area. The whining is directly related to vehicle speed and
not how hard I press the throttle or rpm. Whine is elimintated when the
throttle is fully lifted.
It increases in volume 30-50mph then is steady to about 60 where it drops
off again. Unfortunately it can be quite loud, and is right at a grating
frequency for me.
Tcase has Mobile 1 75w90 gear oil in filled to the proper level.
I was considering trying 75w140 to see if that improved it, but want
confirmation it wont hurt anything first. I also will probably be ordering
the mainshaft oil feeder built by Steve Parker
http://www.steve-parker.co.uk/designed.htm some time in the near future, if
anyone knows a USA based dealer, please post who in a reply. I am sure
plenty of people want to know this.
One site suggested filling the tcase 1/2 quart above full to reduce the
whine. The only way I could think of doing this is to remove the pto cover
and somehow get more in that way. Possibly taking out the output shaft to
do it, but I haven't popped the pto shaft yet so I have no idea what it
looks behind there or if that is even a possibility.
If anyone has any other suggestions, please let me know.
Scot
nothing more than I would expect on a D-R clunk, no driveline lash, but when
under power and driving a whining sound can be heard from the transmission
tunnel/passenger area. The whining is directly related to vehicle speed and
not how hard I press the throttle or rpm. Whine is elimintated when the
throttle is fully lifted.
It increases in volume 30-50mph then is steady to about 60 where it drops
off again. Unfortunately it can be quite loud, and is right at a grating
frequency for me.
Tcase has Mobile 1 75w90 gear oil in filled to the proper level.
I was considering trying 75w140 to see if that improved it, but want
confirmation it wont hurt anything first. I also will probably be ordering
the mainshaft oil feeder built by Steve Parker
http://www.steve-parker.co.uk/designed.htm some time in the near future, if
anyone knows a USA based dealer, please post who in a reply. I am sure
plenty of people want to know this.
One site suggested filling the tcase 1/2 quart above full to reduce the
whine. The only way I could think of doing this is to remove the pto cover
and somehow get more in that way. Possibly taking out the output shaft to
do it, but I haven't popped the pto shaft yet so I have no idea what it
looks behind there or if that is even a possibility.
If anyone has any other suggestions, please let me know.
Scot