MacDon R85 Rotary Disc 13 Foot - Manual (Page 99)

MAINTENANCE AND SERVICING
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97
Revision C
7.6.3 Pump
The main drive pump does not require normal
maintenance or servicing. If repairs are required,
it should be removed and serviced at your Dealer.
7.6.3.1 Removal
DANGER
Stop engine, and remove key from ignition
before leaving Operator's seat for any reason.
A child or even a pet could engage an idling
machine.
a. If machine is connected to the tractor, lower
header to ground, turn off engine, and remove
key.
b. Remove straps (A) to ease removal and handling
of hydraulic hoses.
c. Disconnect hoses (B) and (C) from pump, and
install caps on hose ends and pump ports.
d. Loosen clamp (D), and remove supply hose.
Plug supply hose immediately to minimize loss of
oil. Do NOT remove bolted fittings. Plug pump
inlet line.
e. Disconnect pressure line at fitting (E). Do NOT
remove bolted fittings. Plug open lines.
f. Remove driveline from pump shaft. Refer to
Section 7.6.1 Driveline.
g. Remove four bolts (F), and remove pump (G).
7.6.3.2 Installation
a. Apply SAE multi-purpose extreme pressure
grease to pump spline (H), and position pump (G)
on housing.
b. Re-install four bolts (F), and torque to 92 ft·lbf
(125 N·m).
c. Re-connect hoses, EXCEPT at fitting (J), to pump.
d. Fill pump case with clean hydraulic oil at fitting (J).
e. Attach case drain hose to fitting (J), and tighten.
f. Install hose straps (A).
g. Re-install driveline. See Section 7.6.1 Driveline.
h. Check reservoir oil level, and add oil if required.
See Section 7.7.1 Reservoir.
D
B
C
E
A
G
F
J
J
H
G
F