8
THE OILGEAR COMPANY
Bulletin 947023
Position B/2, Pump During One Half Delivery
from PORT B - Figure 4
This illustration shows that the angle
(E)
of the
swashblock determines the length of the piston
stroke
(F)
, (the difference between outermost and
innermost position) which determines the amount
of delivery from the pump. In this case, the stroke
angle
(E)
is one-half of the stroke, which means the
piston stroke is one-half and the pump delivery is
one-half.
Position N, Pump in Neutral, No Stroke, No
Delivery - Figure 5
Neutral position results when the control centers
the swashblock. The swashblock angle
(G)
is now
zero and swashblock face is parallel to the cylinder
face. There is no inward or outward motion of the
pump pistons as piston shoes rotate around the
swashblock face. With no inward and outward
motion or no stroke
(H)
NEUTRAL, no fluid is being
displaced from the piston bores to the crescents in
the valve plate and there is no delivery from pump
ports.
Illustration reference numbers match the
part item number in the parts list.
Figure 4. Position B/2, Pump During One Half Delivery from Port B
Figure 5. Position N, Pump in Neutral, No Stroke, No Delivery
Refer to
SPECIFICATIONS
NOTE
F
E
IN
OUT
OILG-0002
A
A
A
B
G
H
NEUTRAL
NEUTRAL
OILG-000
3
A
A
A
B
