Toro Reelmaster 6500–D Service Manual page 191

Reassembly
Check all mating surfaces. Replace any parts with
scratches or burrs that could cause leakage. Wash all
metal parts in clean solvent. Blow them dry with pressur-
ized air. Do not wipe parts dry with paper towels or cloth.
Lint in a hydraulic system will cause damage.
NOTE: Always use new seals when reassembling the
steering control unit.
IMPORTANT: During reassembly, lubricate the new
seals with petroleum jelly. Also lubricate machined
surfaces and bearings with clean hydraulic fluid.
1. Install the quad seal:
A. Put one of the bearing races and sleeve into the
housing.
B. Together, the housing and bearing race create a
groove into which the quad seal will be installed.
C. Hold the bearing race tightly against the input
end of the housing by pushing on the gerotor end of
the sleeve.
D. Fit the quad seal into its seat through the input
end of the housing. Be sure the seal is not twisted.
E. Remove the sleeve and bearing race.
2. Lubricate and install the dust seal. See Figure 137 for
correct seal orientation.
3. Install the centering springs in the spool (Fig. 136). It
is best to install the two flat pieces first. Next, install the
curved pieces, three at a time.
4. Fit the retaining ring over the centering springs.
5. Apply a light coating of clean hydraulic fluid to the
spool and slide it into the sleeve. Be sure the centering
springs fit into the notches in the sleeve.
6. Install the pin.
7. Apply a light coating of petroleum jelly to the inner
edge of the dust and quad seals.
8. Put the thrust bearing and races into the housing. The
thrust bearing goes between the two races (Fig. 135).
9. Apply a light coating of clean hydraulic fluid to the
spool and sleeve assembly and slide it into the housing.
IMPORTANT: Do not damage the dust or quad seals.
Reelmaster 6500–D/6700–D
Rev. B
Page 4 – 103
Figure 137
Hydraulic System