John Deere SPRAYMASTER 4700 - Manual (Page 5)

- 5 -
REMOVING THE SHAFT ASSEMBLY FROM THE
MOTOR BODY
1. Remove the Slinger Ring from the Motor Shaft.
WARNING: Always wear safety goggles when working with
spring or tension loaded fasteners or devices.
2. Remove the Retaining Ring next to the Ball Bearing in the Front
Motor Body.
NOTE: If the Bearing is binding against the Retaining Ring
preventing easy removal of the Retaining Ring, slide a 1''
diameter section of pipe over the Shaft; then, gently press
down with an Arbor Press to relieve the pressure on the
Retaining Ring.
3. Place the Motor Body in a Support Fixture with the threaded
portion of the Shaft inside the Support Fixture; then, using an
Arbor Press, press the Shaft Assembly out of the Motor Body
(See Figure 13).
5. Thread the Impeller Nut on the end of the Shaft; then, using an
Arbor Press; press the Shaft through the Bearing, Seal Spacer,
and Seal (See Figure 14).
6. Inspect the sealing area of the Shaft and other components for
wear and replace then if necessary.
INSTALLING THE NEW SHAFT SEAL
1. The sealing lips on a new Seal must be expanded to fit on the
Shaft. Press the Seal onto the large end of the Shaft with the
Seal Lip facing out. Do not push the Seal past the Shaft keyway.
2. Remove the Seal from the Shaft after the seal lip has been
expanded.
3. With the seal lip facing the large end of the Shaft, slide the Seal
over the threaded end of the Shaft; then, gently push it onto the
raised area of the Shaft, stopping approximately 1/4'' from the
large retaining ring groove.
WARNING: Always wear safety goggles when working with
spring or tension loaded fasteners or devices.
4. Install the Seal Spacer, Thrust Bearing Race, Thrust Bearing,
second Thrust Bearing Race, and the large Retaining Ring over
the threaded end of the Shaft.
INSTALLING THE SHAFT BEARING
1. Install the Spacer Ring, and Ball Bearing over the threaded
end of the Shaft.
2. Insert the Shaft (threaded end down) into the Support Fixture.
3. Place the two support bars opposite each other and between
the Bearing and the Fixture; then, using an Arbor Press,
carefully press the Shaft down, but allowing enough room for
the Retaining Ring next to the Bearing to be installed.
CAUTION: The Spacer Ring between the Seal and Bearing must
be free floating, not binding.
4. Place the Shaft Assembly into the Motor Body Bearing Bore with
the threaded end facing up (See Figure 15).
FIGURE 14
FIGURE 13
FIGURE 15
Motor Body
Shaft
Assembly
Support
Fixture
HYDRAULIC MOTOR SHAFT DISASSEMBLY
WARNING: Always wear safety goggles when working with
spring or tension loaded fasteners or devices.
1. Remove the Large Retaining Ring from the Shaft.
2. Remove the Thrust Bearing Assembly (includes the Thrust
Bearing and two Thrust Bearing Races) from the Shaft and the
Seal Spacer.
3. Remove the Small Retaining Ring next to the Shaft Ball Bearing.
4. Place the Shaft (threaded end up) in a pipe support fixture; then,
place the two Support Bars included in the repair kit opposite
each other and between the Seal on the Shaft and the support
fixture (See Figure 14).