TSE DPT40-B, Owner'S Manual

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Series 90 Functional Description 2
2.6 Motor Features
2.6.1 Motor Loop Flushing Valve and
Charge Relief Valve
All Series 90 motors are designed to accommodate a
loop flushing valve. The loop flushing valve is used in
installations which require additional fluid to be re-
moved from the main hydraulic circuit because of
transmission cooling requirements, or unusual cir-
cuits requiring additional loop flushing to remove
excessive contamination in the high pressure circuit.
A shuttle valve and charge relief valve are installed in
the motor end cap to provide the loop flushing func-
tion. The shuttle valve provides a circuit between the
low pressure side of the closed loop and the charge
relief valve in the motor end cap.
The motor charge relief valve regulates the charge
pressure level only when there is a pressure differen-
tial in the main loop. The shuttle valve is spring
centered to the closed position so that no high pres-
sure fluid is lost from the circuit when reversing
pressures.
For charge relief valve adjustment see Sec. 8.3.1 , for
repairs see Sec. 9.4.1 .
MF showing location of Loop Flushing Valve
90000248
Charge Relief Valve
Loop Flushing Shuttle Valve
End Cap
Top of Motor
90000238
Motor Charge Relief Valve and Loop Flushing
Shuttle Valve
MV Maximum Displacement Limiter
(Minimum Displacement Limiters on Opposite Side)
90000352
e m a r F V M 5 5 0 e m a r F V M 5 7 0
m u m i n i M
t n e m e c a l p s i D
m c 0 4 - 9 1 3
n i 4 . 2 - 2 . 1 3
m c 4 5 - 6 2 3
n i 3 . 3 - 6 . 1 3
m u m i x a M
t n e m e c a l p s i D
% 0 0 1 - 5 6 % 0 0 1 - 5 6
2.6.2 Variable Motor Displacement
Limiters
All Series 90 variable motors include mechanical
displacement (stroke) limiters. Both the maximum
and minimum displacement of the motor can be
limited.
The range of the settings is as follows:
For adjustments see Sec. 8.3.2 .
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