Page 24 / 26 ECOC: EGC0 ; LOC: AI
6-744011-7
412-18745
Rev.B
CAUTION: Close release valve finger tight ONLY. Using tools on release valve can damage it and cause
the pump to malfunction.
2. Operate pump handle to deliver hydraulic power to system. Pressure will be maintained until release
valve is opened.
3. Open release valve (turn counter-clockwise) to release pressure, allowing oil to flow back to the
reservoir.
7.4 Relief valve adjustment
All pumps contain a factory set relief valve to prevent over pressurization of the system. Lower pressure
settings can be obtained. Contact your authorized Tyco Electronics Service Centre.
8 Maintenance
Use only original hydraulic oil with these pumps to promote long pump life and to protect your warranty.
Viton and EPR seal kits are available for some hand pumps. Contact your Tyco Electronics
representative for more information
8.1 Adding oil to the pump
Check oil level regularly.
WARNING: Always add oil with cylinders fully retracted (extended if pull cylinders) or the system will
contain more oil than the reservoir can hold.
1. Remove vent/fill cap from reservoir.
2. Fill reservoir only to level mark shown on pump.
3. Remove air from system if necessary (see chapter 6 “Air removal”). Recheck oil level after removing
air.
4. Return vent/fill cap to proper position.
NOTE: Non vented hand pumps require air in the reservoir to function properly. If the reservoir is
completely filled, a vacuum will form preventing oil from flowing out of the pump.
412-18745-1
