TM 9-2320-279-34-3
Power Takeoff (PTO) and Hydraulic Pump Maintenance Instructions (Cont)
a.
Disassembly.
(1)
(2)
(3)
(4)
NOTE
There are two models of hydraulic
pumps. Model B has two preformed
packings and different wear plate
configuration. The Model B pump is
equal in size and functional
performance and fully
interchangeable with Model A pump.
Mark front and rear covers and
center section.
Place hydraulic pump (1) in vise.
Remove four screws (2), four screws (3),
and eight lockwashers (4).
Remove front cover (5) from center
section (6).
Remove shaft seal (7).
NOTE
Model B pump has preformed packing. Do
step (4.1) for Model B.
(4.1)
(5)
Remove preformed packing (7.1) from
front cover (5).
Remove seal gland (8), seal retainer (9),
and front wear plate (10) from center
section (6).
(6)
Remove drive gear (11) and driven
gear (12) from center section (6) and rear
cover (13).
Change 3
19-13
