Charge Pump Service (Fig. 24)
1.
(2)
Use a 5 mm internal hex wrench to remove the two
screws holding charge pump cover to pump end cap.
Top of pump when
installed in machine
NOTE: Charge pump rotation is determined by orienta
tion of charge pump cover on pump end cap. Cast boss
on charge pump cover indicates orientation. Note orien
tation of cast boss before removing charge pump cover.
2.
3.
4.
5.
end cap for abnormal wear, damage or foreign material.
Inspect charge relief valve seat in end cap for damage
or foreign material.
Remove charge pump cover and O-ring.
Remove charge pump gerotor assembly.
Remove charge relief valve spring and ball.
Inspect gerotor assembly, charge pump cover and
2
3
5
4
1
Torque to
84 to 120 in-lb.
Figure 24
6.
of petroleum jelly to inside diameter, outside diameter
and slide faces of gerotor assembly.
Before installing charge pump, apply a small amount
1. Charge pump cover
2. O-ring
3. Gerotor assembly
4. Charge relief ball
5. Charge relief spring
7.
8.
9.
Install charge relief ball and spring.
Install charge pump gerotor assembly.
Install charge pump cover and O-ring. Make sure
charge relief spring enters recess in cover.
10.
Install charge pump cover screws and tighten to a
torque of 84 to 120 in-lb.
Major Pump Repair (Fig. 25, 26)
The procedures on the following pages are for complete
disassembly and reassembly of the pump.
During assembly of the pump, all surfaces which have
relative motion between two parts should be coated with
a film of clean hydraulic oil. This will assure that these
surfaces will be lubricated during start-up.
Cleanliness is a primary means of assuring satisfactory
transmission life, on either new or repair units. Cleaning
parts by using a clean solvent wash and air drying is
usually adequate. As with any precision equipment, all
parts must be kept free of foreign materials and chemi
cals. Protect all sealing surfaces and open cavities from
damage and foreign material.
It is recommended that all gaskets, o-rings and seals be
replaced. Lightly lubricate all o-rings with clean petro
leum jelly before assembly. All gasket sealing surfaces
must be cleaned before installing new gaskets.
Repairs
Page 4 - 18
Hydroject 3010
| Categories | Lawn Mower Manual, Sprinkler and Irrigation Manuals, Toro Sprinkler and Irrigation Manuals |
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| Language | English |
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