MacDon R80 Rotary Disc Pull-Type Windrower - Manual (Page 106)

MAINTENANCE/SERVICE
Form # 169053
104
Model Year - 2009
7.10.4 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.
7.10.4.1 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. Disconnect case drain hoses (A) from pump and
install caps on hose ends and pump ports.
c. Cut hose ties to ease removal and handling of
hydraulic hoses.
d. Loosen clamp (B) and disconnect supply hose
(C) at the pump. Plug supply hose immediately
to minimize loss of oil. Do not remove bolted
fittings. Plug pump inlet line.
e. Disconnect pressure line at fitting (D). Do not
remove bolted fittings. Plug open lines.
f. Remove four bolts (E) and remove pump.
g. Cover gearbox opening with a rag or plastic.
7.10.4.2 Installation
a. Remove covering from gearbox.
b. Apply SAE multi-purpose extreme pressure
grease to pump spline and position on gearbox.
c. Re-install four bolts (E) and torque to 92 ft·lbf
(125 N·m).
d. Remove caps from pressure fitting (D) and hose
end, and attach pressure hose to pump. Tighten
fitting. See illustration opposite.
e. Remove plug from suction fitting on pump.
f. Remove plug from supply hose (C) and attach to
pump fitting. Secure with clamp (B).
g. Remove plug from lower case hose (A) and
attach to pump fitting.
(continued next page)
B
C
D A
A
E