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HYDRAULIC CONNECTIONS
PUMP AND CYLINDER OPERATION
Air Removal
1. Apply sealant (or Teflon tape) to threads on pressure gauge, NPT hose fitting, and
gauge adaptor. Make connections as shown in picture above.
NOTE: When making hydraulic connections, use high quality sealing compound
only on the threads of the male NPT fittings. If you use Teflon tape, do not tape the
first thread. Use tape sparingly. Loose Teflon tape in your pump or cylinder can cause
malfunctions and damage. Wrap tape so that it tightens upon assembly. (Clockwise
with the threads facing you.)
2. Couple hose to cylinder. Fully hand-tighten all couplers. No tools are needed to make
this connection.
1. Turn pump release valve clockwise to close.
2. Operate pump handle to advance cylinder.
3. Open pump release valve (counter-clockwise) to retract cylinder. If cylinder does not
retract smoothly, remove air as described below.
1
1. Turn fill/vent cap
/
turn counter-clockwise to vent pump. Close release valve.
4
2. Position pump at higher elevation than cylinder and position cylinder with plunger
end down.
3. Advance and retract cylinder a
few times. The trapped air will
move up to pump reservoir.
4. Close fill/vent cap.
See Pump Instructions (L-1763)
and Cylinder Instructions
(L-1608) for more information on
pump and cylinder installation,
operation, and maintenance.
Position For Removing Air From System
Fill/Vent Plug
Release Valve
3
Air moves up hose
as cylinder retracts.
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