T27978 50-Ton Hydraulic Press (Mfd. 12/16)
-5-
Figure 15. Rotating tank relief valve.
Tank
Relief
Valve
7. Rotate tank relief valve (see Figure 15) coun-
terclockwise to release pressure on ram, then
remove workpiece.
Maintenance
The T27978 50-Ton Press features a fully-sealed
hydraulic unit and air cylinder. Periodically check
press for loose mounting bolts or any unsafe con-
ditions. Thoroughly clean press components on
an as-needed basis for best operation.
1. Wipe all dirt and dust off press components.
2. Apply light oil to surface of ram.
3. Check hydraulic ram and press bed sup-
port rods for cracks or damage. Replace if
necessary.
To clean/maintain press:
6. For precise application of ram force on work-
piece, pump handle to increase pressure
incrementally. Refer to pressure gauge for
actual workpiece pressure (see
Figure 14).
Figure 14. Pump handle and pressure gauge.
Pressure Gauge
Figure 13. Air valve components/controls.
Air
Valve
Tab
Air
Line
Air
Valve
Workpieces positioned off-center below
hydraulic ram can be ejected unexpectedly
from force being applied unevenly, striking
operator or bystanders with great force.
Always ensure workpiece is positioned
so force is evenly distributed. STOP and
release compression if workpiece shifts
during pressing.
5. Lower ram by pressing and holding air valve
tab (see
Figure 13). Ram should lower
smoothly.
Summary of Contents for T27978
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