Reassembly - Toro Reelmaster 5500-D Service Manual

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 (Fig. 24).
3. Install the centering springs in the spool (Fig. 23). 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. 22).
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.
10.Clamp the housing in a vise (Fig. 25). Use just
enough clamping force to hold the housing securely.
Steering and Brakes
11. Lubricate and install a new o-ring seal in the groove
in the housing.
12.Install the wear plate and align the holes in the wear
plate with threaded holes in the housing.
Note: The holes in the wear plate are symmetrical.
13.Install the drive, making sure the slot in the drive
engages the pin.
14.Lubricate and install a new o-ring seal in the groove
in the wear plate.
15.Install the gerotor and align the screw holes.
16.Lubricate and install a new o-ring seal in the groove
in the gerotor ring.
17.Lubricate and install a new o-ring and seal ring in the
groove in the gerotor star.
18.Install the spacer.
19.Install the end cap and seven capscrews. Tighten the
capscrews, in a crossing pattern, to a torque to 16 - 18
Nm (140 - 160 in-lb).
20.Remove the steering control unit from the vise.
21.Install the check ball and plug. Use a new o-ring and
tighten the plug to 17 Nm (150 in-lb).
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Figure 24
Figure 25
Reelmaster 5500-D