Top Bearing Replacement
Units from 2001 to April 2010: The top bearing was
two ball bearings, one on top the other and open in
between. That design is no longer available. The
only top bearing that can be replaced is the one
pictured here. It has a gray plastic cap. The prior
versions either had a brass cap or a white plastic
cap. Existing prior versions require an auger kit to
replace the bearings.
1. Remove the auger per the instructions on the
previous page.
2. Separate the breaker from the auger.
3. Remove the thrust part of the bearing.
4. Drive the old bearing out from the bottom.
Note: Placing the breaker inverted into a 2"
PVC coupling or a vice helps with the removal.
5. Remove and replace the o-ring in the breaker.
6. Make an insert tool (used to hold the inner race
to the outer race during assembly) :
a. Cut a 1/2" length of 3/4" PVC tubing. Cut it as
straight as possible.
b. Obtain a 1 1/2" long, 3/8" bolt with nut and 2 flat
washers.
c. Assemble them with the new bearing as shown.
7. Lube the outside of the new bearing and insert it
into the top of the breaker.
8. Drive the new bearing into the breaker as far as
it will go. Extended inner race faces up.
Note: Use a vice as a support or temporarily
remove the o-ring from the outside of the
breaker and insert the breaker into the top of
the evaporator.
9. Remove the insert tool.
10. Grease thrust washer and place it onto
bearing.
Note: Use just enough grease to fill in the
spaces between the thrust bearing rollers.
11. Assemble onto auger, attach with new thrust
washer and cap screw.
MDT3F & MDT4F
April 2010
Page 25
Top Bearing Prior to Assembly
Roller Half of Bearing with insert tool
Greased Thrust Half of Bearing
Roller Half of Bearing Seated in Breaker
Inner Race
PVC
Thrust
Bearing
Thrust
Washer
Roller
Bearing
