8.
housing. The thrust bearing goes between the two bear-
ing races (Fig. 22).
Put the thrust bearing and bearing races into the
CAUTION
IMPORTANT: Do not damage the dust or quad seals
when installing the spool and sleeve assembly.
The centering springs are under tension. Re-
move the retaining ring carefully.
9.
spool and sleeve assembly. Carefully slide the assem-
bly into the housing.
Apply a light coating of clean Dexron III ATF to the
10.Remove
springs from the spool.
the spring retaining ring and centering
Reassembly (Fig. 21)
10.Clamp
the housing in a vise. Use only enough clamp-
ing force to hold the housing securely.
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.
11.
Lubricate and install a new o-ring (Item 3) in the
groove in the housing.
12.Install
the wear plate and align screw holes in the
wear plate with threaded holes in the housing.
NOTE: Always use new seals and o–rings when
reassembling the steering control valve.
NOTE: The holes in the wear plate are symmetrical.
IMPORTANT: During reassembly, lubricate the new
seals with petroleum jelly. Also, lubricate machined
surfaces and bearings with clean Dexron III ATF.
13.Install
drive engages the pin.
the geroter drive, making sure the slot in the
14.Lubricate
and install new o-ring in wear plate groove.
1.
Install the quad seal:
15.Install
the gerotor and align the screw holes.
A. Put one of the bearing races and sleeve into the
housing.
16.Lubricate
groove.
and install new o-ring in gerotor ring
and install new o-ring and seal ring in gero-
B. Together, the housing and bearing race create a
groove into which the quad seal will be installed.
17.Lubricate
tor star groove.
C. Hold the bearing race tightly against the input end
of the housing by pushing on the gerotor end of the
sleeve.
18.Install
19.Install
the spacer.
the end cap and seven (7) cap screws. Tighten
D. Fit the quad seal into its seat through the input
end of the housing. Be sure the seal is not twisted.
the cap screws, in a crossing pattern, from 140 to 160
in-lb (16 to 18 N–m).
E. Remove the sleeve and bearing race.
Lubricate and install the dust seal.
20.Remove
the steering control unit from the vise.
2.
3.
21.Install
the check ball and plug with o–ring. Tighten
the plug to 150 in-lb (17 N–m).
Install the centering springs in the spool. It is best to
install the two flat pieces first. Next, install the curved
pieces, three at a time.
Thrust Bearing
and Race (2)
4.
Fit the retaining ring over the centering springs.
Dust Seal
5.
Apply a light coating of clean Dexron III ATF to the
spool and slide it into the sleeve. Be sure the centering
springs fit into the notches in the sleeve.
Quad Seal
6.
Install the pin.
Figure 22
7.
Apply a light coating of petroleum jelly to the inner
edge of the dust and quad seals.
Multi Pro 1200/1250
Page 4 – 27
Hydraulic System
| Categories | Lawn Mower Manual, Sprinkler and Irrigation Manuals, Toro Sprinkler and Irrigation Manuals |
|---|---|
| Tags | Toro Multi Pro 1200, Toro Multi Pro 1250 |
| Download File |
|
| Document Type | Service Manual |
| Language | English |
| Product Brand | Toro. Customer Service Representatives are available by phone:
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| Publisher | toro.com |
| Wikipedia's Page | Toro Company |
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