Jacobsen SLF 1880, Technical/Repair Manual

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8J-76
Figure 8J-8. Gerotor, Valve Plate, and Valve
10.Install the inner and outer face seal to the balance
ring (Figure 8J-9).
Figure 8J-9. Face Seal
11. Install the balance ring on the valve with the pin
groove facing up.
12.Coat the springs and pins with petroleum jelly.
Install both springs and pins in the holes of the
manifold cover.
13.Carefully install the manifold cover on the valve
plate.
Center the manifold cover and balance ring. When
centered and aligned, push down on the cover
until contact with the valve plate occurs.
14.Install four capscrews and tighten to 38 ft-lbs (52
Nm).
INSTALLATION
1. Position the motor in the motor mount and secure
with four bolts and lock washers.
2. Remove the plugs and using the tags created dur-
ing removal, connect the hydraulic hoses to the
motor.
3. Install the key in the motor output shaft.
4. Clean shaft taper and hub taper so that they are
clean and dry. Taper fit must be assembled free of
lubricants and anti-seize.
5. Position the hub over the output shaft and key,
secure with nut and cotter pin. Torque the rear
wheel hub nut to 200 ft-lbs (± 25 ft-lbs).
6. Install the wheel and tire on the hub.
7. Lift the tractor and remove the jack stands.
8. Start the engine and check motor operation.
Check system for leaks and repair as necessary.
NOTICE
Be sure the Gerotor, valve plate, and valve are timed
(Figure 8J-8).
Gerotor
Valve
Plate
Rotate valve
clockwise 1/2
tooth to engage
spline.
Any One of 6
Ports Open to
Outside of
Valve
Recess
Point
Largest
Pocket
Recess
Pin
Groove
Inner
Face
Seal
Balance
Ring
Outer
Face
Seal
NOTICE
The mounting cover normally has a slight spring
load.