Advertisement
Fault
Oil leakage on oil filler or oil
drain plug
O
O
il leakage between hous-
ing and top section
O
O
il leakage on top section
within helical gear stage /
input
B
B
eating noise at helical
gear stage
R
R
inging noise
G
G
rinding noise
B
B
earing damage on input
pinion
P
P
ivoting bearing is difficult
to rotate or backlash recog-
nizable
Probable cause
Dirt between sealing ring and
housing.
Old sealing ring was used.
Bolts not tightened according to the
specified tightening torque.
Seal faces not sealed or uneven.
Burrs on cylinder pin.
Bolts not tightened according to the
specified tightening torque.
Too much oil in transmission.
O-ring on cover defective.
Breather valve defective.
Teeth on input pinion and/or helical
gear damaged by false installation.
Helical gear stage running without
oil.
Bearing preload or backlash not
correctly adjusted.
No axial play.
Cover disc loosened and dirt enter-
ed into the bearing.
Cage segments are damaged.
Plastic deformation of balls or ball
race.
Bearing not relubricated.
Grease not distributed.
3-4
Remedy
Cleaning required.
Use new sealing ring
Tighten bolts with the specified
tightening torque.
Apply LOCTITE 574 onto seal faces.
Touch up seal faces with oil rubber.
Use a new cylinder pin.
Tighten bolts with the specified
tightening torque.
Check oil level.
Install new O-ring.
Replace breather valve.
Check tooth flanks for damage and
touch up damaged spots with oil
rubber.
Check oil level.
Refill oil.
Checking and new adjustment.
Install new bearing and adjust axial
play.
Replace pivoting bearing.
Replace pivoting bearing.
Replace pivoting bearing.
Relubricate pivoting bearing.
Rotate pivoting bearing several
times by hand.
Advertisement
