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Figure 21
1. Remove these bolts
3. Clean the external surface of the rotary pump.
4. Unplug the wiring harness from the pump control.
5. Remove the 6 bolts as shown in
6. Remove the control from the pump housing.
Note: Oil will drain from the case when the housing
is removed.
7. Use needle nose pliers to pull the retaining clip (T40)
from the control
(Figure
1
Figure 22
1. T50 orifice
2. T40, T30, and T20 orifices
8. Remove the spring (T30) and supply orifice (T20) from
the control
(Figure
22).
9. Remove the drain orifices (T50 and T60) from the
control housing
(Figure
2. Cap off the case-drain line
Figure
21.
22).
3
2
g029477
3. T60 orifice
22).
10. Clean the sealing surfaces of the pump housing and
control housing.
11. Install the control housing onto the pump using the
new gasket.
Important: The control linkage pin on the control
must be inserted into the swash-plate link in the
pump.
Note: Use petroleum jelly to help hold the swash-plate
link in place while the control is installed.
Important: Do not use RTV sealant. RTV sealant
can damage the pump.
Note: There will be resistance when the front edge
of the control is tilted away from the pump housing if
the control linkage pin is inserted into the swash-plate
link correctly.
Note: If the control linkage pin is not properly
inserted into the swash-plate link, the pump will not
return to neutral and the rotary motor will spin upon
engine startup.
12. Install the 6 retaining bolts; torque the bolts to 16 N-m
(12 lb-ft).
13. Connect the case drain line and check the hydraulic
fluid level; refer to the Operator's Manual for the machine.
14. Connect the wiring harness to the rotary pump control.
15. Wipe up any spilled oil.
16. Start the machine to test the rotary pump.
Important: If the rotary output spins when the
machine is started but the rotation command is
not given, the control linkage pin is not properly
inserted into the swash-plate link. Remove and
cap the case drain line and repeat the above steps.
10
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