215676
31
Revision A
NOTE:
Specifications and design are subject to change without notice or obligation to revise previously sold units.
1001050
A
B
C
D
E
Figure 2.1: Pumps
Pump locations:
•
Knife drive pump (A) (closest to engine)
•
Reel/conveyor pump (B) (or M2 with disc)
•
Inner gear pump (C)
–
Oil from the inner gear pump is
normally routed directly to the cooler bypass valve and
combines with the return flow from the first gear pump.
From there the oil is cooled and moves through the high
pressure filter and then into the supercharge valve manifold.
•
Outboard gear pump (D)
–
The outboard gear pump supplies
oil to the multifunction control manifold. The returned oil
combines with the return flow from the inboard gear
pump (C) at the cooler bypass and maintains standby
pressure to operate brake disengage (either low- or high-
speed range) and the neutral interlock cylinder.
•
Traction drive double piston pump (E)
–
Engine end pump
drives right wheel; outboard pump drives left wheel.
Table 2.1 Hydraulic Pumps
Pump Type
Specifications
Controller Type
Function
Pump A
–
load sense
pressure-compensated
piston pump
Variable displacement:
0
–
45 cc (2.75 cu. in.)
Flow = 0
–
102 L/min
(27 gpm) at 27.56 MPa
(4000 psi)
Electric over hydraulic
Maximum flow rate
determined by header ID
Knife drive or part of disc
drive (option) M1 circuit
Pump B
–
load sense
pressure-compensated
piston pump
Variable displacement:
0
–
38 cc (2.32 cu. in.)
Flow = 0
–
84 L/min (24 gpm)
at 22.05 MPa (3200 psi)
Electric over hydraulic
Maximum flow rate
determined by header ID
Conveyor and reel drive or
part of disc drive (option)
M2 circuit
Pump C
–
gear pump
Displacement:
13.8 cc (0.84 cu. in.)
Flow at full throttle
44 L/min (11.5 gpm) at
17.23 MPa (2500 psi)
Engine rpm
Supercharge flow and
pressure for traction drive,
brake release, and
Neutral lock
Pump D
–
gear pump
Displacement:
13.8 cc (0.84 cu. in.)
Flow at full throttle
44 L/min (11.5 gpm) at
17.23 MPa (2500 psi)
Engine rpm
Supercharge flow and
pressure for traction drive,
brake release, and
Neutral lock