Greenlee Textron / Subsidiary of Textron Inc.
7
4455 Boeing Dr., Rockford, IL 61109-2988 815/397-7070
940-PS Series Hydraulic Power Pumps
The 940-PS Hydraulic Pumps with Control Valves
940-BASIC PS. This pump consists of the basic power
unit without any control valves. It can be adapted very
easily to an SA or TA Model by attaching the type of
valve required.
940-PS. This pump is equipped with a hose connection
unit which permits the connection of 3/8" high pressure
hoses directly to the pump. It can also be adapted very
easily to an SA or TA Model by removing the hose
connection unit and attaching the type of valve required.
See page 8 for Hose Connection Unit 501 6152.0 (C).
940-SA-PS. This pump is equipped with an SA control
valve for operating single-acting rams. It has one 3/8"
NPT outlet port. This model is used when the ram has
spring, manual, or gravity return. The control valve has
two positions, Advance (turn control handle counter-
clockwise to extreme position), or Return (turn control
handle clockwise to extreme position). See page 8 for
SA Valve 501 5644.6 (D).
940-TA-PS Pump. This pump is equipped with a four-
way control valve or operating double-acting rams. This
valve has two 3/8" NPT outlet ports. The lower port is
for the forward (or advance) stroke with a maximum
pressure of 10,000 psi. The upper port is for the return
stroke of the ram at a maximum pressure of 200 psi.
The control handle has three positions: Advance (turn
handle counterclockwise to extreme position), Return
(turn handle clockwise to extreme position). Neutral is in
the middle of these two positions.
This is a positive seat-type valve and therefore position-
ing of the valve in the advance position must be done
firmly to make the seating effective. If stopping the ram
and holding the ram pressure during the advance
operation is required, snap the starting switch on motor
to OFF. The pressure should then be held for a sus-
tained period. See page 8 for TA valve 501 2106.5 (E).
Note: This valve is designed to return the ram piston
only when there is no load on the ram.
