Continental Hydraulics A Series Service Manual

CAUTION – Before performing any service
operation on any Directional Control Valve,
be sure that all pressure has been relieved
from BOTH SIDES of the system.
CAUTION – Before performing any service
operation on any Directional Control Valve,
disconnect or lock off power supply.
CAUTION – Before manually actuating any
Directional Control Valve, be sure that any
resulting machine function will not endanger
persons or equipment.

PRODUCT IDENTIFICATION

Each Directional Control Valve has an Ordering Code
printed on its cover label. See Figure 1 for the location
of the Ordering Code.
Ordering
VSD03M-3A-GB-60L-A
Code
1101
Basic Valve VSD03M - _ _ -G- _ _ _ _ - _
Function
Spool Type
Seal type
Mechanical Options
Electrical Options
Solenoid Indicator Lights
Solenoid Type
This Service Booklet applies to products with Ordering
Codes like the sample in Figure 2
General SPECIFICATIONS

RECOMMENDED FLUID

Petroleum, water-based fluids (not more than 40%
water) and most phosphate esters. Other fluids may be
SAVAGE, MN. U.S.A. 55378
P,A,B
5000 PSI (345 BAR)
120/110 VAC 60/50 Hz
T 3000 PSI (207 BAR)
b A B a
WATTS
3A
21
P
T
Figure 1
Figure 2
Form No. R132.00 4/02
SERVICE MANUAL
VSD03M Solenoid Actuated
Directional Control Valves
acceptable, but special O-rings may be required. Viton
seals standard.

FLUID TEMPERATURE RANGE

Fluid temperature up to 200° F. will not appreciably
affect valve performance. However, for safety reasons,
temperatures above 130° F. are not recommended.

RECOMMENDED OPERATING VISCOSITY

80 to 350 SUS.

FILTRATION

ISO 18/16/13 or better.

MOUNTING POSITION

Any unrestricted position acceptable. Horizontal
mounting preferred.

NFPA FLOW PATH/ACTUATING PATTERN

SOLENOID, AIR AND OIL ACTUATED:
Actuating operator a – connects flow to cylinder port A.
Actuating operator b – connects flow to cylinder port B.

GENERAL INFORMATION

SOLENOID ACTUATED – Spring centered and spring
offset valve types will be spring positioned unless
actuated continuously. Detented, no-spring valves
may be actuated momentarily. When solenoid is not
actuated, the spool will remain in last position attained,
provided there is no severe shock, vibration or
pressure surge.
Pressure surges in a common tank line serving these
and other valves can be great enough to cause
inadvertent valve shifting. This is particularly critical in
the no-spring, detented type valves. Separate tank
lines may be necessary.
NOTE: Any sliding spool valve held shifted under
pressure for long periods may stick and not spring
return due to fluid residue formation. To prevent
sticking, valves should be cycled periodically.

PREVENTIVE MAINTENANCE

After Directional Control Valves have been put in
operation, provide periodic inspection and
maintenance. The check points listed below will assist
you in extending the life of your Continental valves.
Fluid Operating Temperature – Fluid temperature at
the reservoir during operation should be kept between
100° F. and 130° F.
Fluid Cleanliness – Control particle contamination by
changing or cleaning all filter elements periodically
BEFORE they become clogged and start to by-pass.
Electrical Inspection – Periodically check to assure
proper voltage, and that all electrical connections are
making good contact.
"A" Design Series
1