Toro Reelmaster 2000-D Service Manual page 87

Shaft Seal Replacement (Fig. 39)
1. Place the mounting flange on a clean working sur-
face with the shaft seal (2) up. Remove the retaining
ring.
NOTE: Avoid scratching or marring the shaft seal bore
in the mounting flange. Damage to the bore may cause
the shaft seal to leak around the outer diameter of the
seal.
2. Carefully remove the shaft seal. Clean any contami-
nation from the seal bore.
3. Place a new shaft seal with the part number side up
into the seal bore. Apply uniform pressure to the face of
the shaft seal while pressing it into the bore. This method
should prevent damage or misalignment of the seal in
the bore.
4. Install new retaining ring into the mounting flange.
E–seal and Backup Ring Replacement (Fig. 39)
1. Place the front bearing block on a clean surface. Re-
move the old backup ring and E–seal. Clean any con-
tamination from the E–seal groove.
2. Apply a light coating of petroleum jelly in the E–seal
groove of the front bearing block and on the flat side of
the E–seal to help keep the seals in place during assem-
bly.
3. Place the E–seal with its flat side up into the seal
groove on the front bearing block. Place the backup ring
into the groove made by the E–seal and bearing block.
Make sure the notches in the center of the backup ring
and E–seal line up so that the backup ring sits flush with
the E–seal.
4. Repeat the above steps for the rear bearing block.
O–ring Replacement (Fig. 39)
1. Remove the old O–rings from the gear housing.
Clean any contamination from the O–ring groove.
2. Apply a light coating of petroleum jelly in the O–ring
grooves of the gear housing. Place a new O–ring in each
groove.
Reassembly (Fig. 39)
1. Place the mounting flange with the shaft seal side
down onto a clean working surface. Make sure that the
back side of the mounting flange is free of any contami-
nation.
Reelmaster 2000–D
2. Place the front bearing block with its seal side down
onto the mounting flange. The open side of the E–seal
should point toward the matchmark on the inlet side of
the mounting flange.
3. Apply a light coating of hydraulic oil to the exposed
face of the front bearing block. Make sure the tape is on
the shaft end of the drive gear. Insert the shaft end of the
drive gear carefully through the front bearing block and
the shaft seal being careful not to damage the shaft seal.
4. Place the shaft of the idler gear into the remaining
position of the front bearing block. Apply a light coating
of oil to the back face of the drive and idler gears.
5. Place the rear bearing block (with seal side up) onto
the drive and idler gear shaft ends. Make sure that the
open side of the E–seal is pointing towards the inlet of
the pump.
6. Install two dowel pins into the mounting flange.
7. Align the matchmarks on the gear housing and
mounting flange. Slide the gear housing down over the
gears and bearing blocks.
8. Make sure the rear bearing block face sits just below
the back face of the gear housing. If the rear bearing
block sits higher than the rear face of the gear housing,
remove the gear housing. Check that the E–seal, back-
up ring, or O–ring did not shift out of place during assem-
bly.
9. Place the remaining two dowel pins into the rear of
the gear housing. Align matchmarks and set end cover
on the rear of the gear housing.
10.Insert the four bolts through the bolt holes in the end
cover and gear housing. Hand tighten each bolt and
then torque to 40 ft–lb (54 N–m).
11. Place a small amount of oil in the inlet of the pump.
Rotate the drive shaft away from the inlet one revolution.
If the drive shaft binds while rotating, disassemble the
pump and check for assembly problems, and then reas-
semble pump.
Page 4 – 51 Hydraulic System