Gilson TS-3 - Draining;Refilling the Hydraulic System

14
Draining/Relling the Hydraulic System
WARNING:
Disconnect power supply before
servicing or cleaning.
WARNING:
DO NOT plug in or operate the
Testing Screen without all covers installed.
1. Unplug or otherwise disconnect the Testing Screen from
its power source, and lock out the connection�
2. Clean the top of the machine to prevent foreign materials
from contaminating the oil�
3. Release the system pressure by pulling the pump handle
all the way toward the front of the machine� (If continuing
from checking the oil and have removed the external
pump cover, leave it o󰀨.)
4. Remove the top and side/back covers� See Removal of
Top and Side/Back Covers on page 11�
5. Disconnect the hose from one of the hydraulic cylinders,
leaving the other end of the hose connected to the pump�
Place the free end of the hose into a clean container at
a level that will allow gravity to empty the system� Pump
the handle carefully to drain the hydraulic oil from the
system�
6. Observe the position of the internal pump cover before
removal� Its vent is slightly closer to the front (handle)
end of the pump than to the back� Gilson recommends
using a marker or other means to mark the operator
(front) side of the cover to ensure correct orientation
during reassembly�
7. If there is sludge in the bottom of the pump reservoir,
remove the pump from the machine and clean it out with
solvent before relling with oil.
8. If repairs are to be made, continue disassembly as
described Hydraulic Pump on page 15� If you are only
replacing hydraulic oil, continue to the next step�
9. Reconnect the hose to the cylinder�
10. Fill the pump reservoir to within 1/4in of the top�
Replace the pump cover in the same orientation before
removal� Pump up pressure with short strokes on the
pump handle� Release pressure by pulling the handle
all the way toward the front of the machine�
11. Remove the pump cover again and add hydraulic oil to
ll pump reservoir to within 1/4in of the top.
12. Replace thecover again in the proper orientation and
tighten down the mounting screws�
13. Bleed the air out of the hydraulic system:
a. Loosen the connections between the hoses and the
cylinders by partially unscrewing the swivel connections�
b. Pump up the hydraulic system until oil begins to appear
at the loosened connections�
c. Retighten the swivel connections�
14. If the ttings leak, use hydraulic joint compound to
create a seal between each leaky tting and the pump
or cylinder to which it is attached�
15. Reinstall the covers�