Dake Elecdraulic II - 908 User Manual

INSTRUCTIONS AND PARTS LIST FOR

Models 8-025, 8-050, 8-075, and 8-150

Elec-Draulic II Presses

SETTING UP THE PRESS FOR OPERATION

For shipping convenience some of the parts are not assembled. Assemble these parts in the following order:

1. Bolt the base angles to uprights using four bolts and nuts, which are provided. Make sure base
angles are against stops on uprights.

NOTE: The press should set on a level floor with the base angles touching the floor at all
points. Use shims where necessary.

2. Switch box is mounted on left upright. Have electrician connect switch to power line. Pump can rotate
in either direction.

3.

4. Oil Requirements: Fill reservoir thru street elbow at back of press with Mobil DTE oil No. 24 or
equivalent. NOTE: Oil level may be checked (with ram up) by removing the pipe plug on the
right side of reservoir near the front. Replace plug before operating the press.

Model 8-025 uses 3 gallons

Model 8-050 uses 3 gallons
Model 8-075 uses 3 gallons
Model 8-150 uses 10 gallons

5. Attach nose piece to ram by inserting shank into ram and tightening the set screw.

6. CAUTION! Place the hoist crank on the lift drum shaft. The table is raised to the desired height

by turning the crank after removing the table pins. Check to make sure the hoist cable is
tracking correctly. Run the table channels from top to bottom. The cable should be on each of
the two upper pulleys and should track back and forth on the cable drum. Always place table
pins under the table channels when servicing or tracking the cable. If a tracking problem
exists, contact the Dake factory for instructions. Be sure all table pins are fully inserted in
place before applying pressure. Always remove or release pressure on the cable before
pressure is applied.

OPERATIONS

The press has been completely tested at the factory and after setting up according to instructions above, the
press is ready for operation. However, it is necessary for the operator to acquaint themselves with the
controls.

1. Handcrank is provided to raise and lower table channels to proper height for work. When desired
height is obtained insert table pins. Models 8-025 and 8-050 use 2 pins on each side (4 total) and
Models 8-075 and 8-150 use 3 pins on each side (6 total).

NOTE: Be sure all table pins are in place and in as far as they can go before pressure is applied,
also slack off on the cable.

2. The two table plates and two V-blocks are used for supporting the work in process.

3. The control handle on the right side of the press is used for operation of the press. When the control
handle is held in the down position, the ram will move down. When the control handle is held in the up
position, the ram will move up. Upon release, the control handle will return to the neutral position and
ram motion will stop. Pressure builds upon contact with the work. It is not necessary to stop the motor
after each operation.

Model 8-025, 8-050, 8-075 & 8-150

1

4. The relief valve located in the manual valve has been set at the factory to open at the maximum
tonnage of the press. The valve can be adjusted by removing the hex cap nut located on the lower left
hand front corner of the manual valve. Turning the adjusting screw counterclockwise lowers the
setting.

MAINTENANCE

CAUTION: When disconnecting any parts of this machine be extremely careful that all parts are clean
to prevent entrance of dirt in the hydraulic system.

1. If press loses Pressure:

a. Check all tubing joints for leaks and tighten the tube nuts.
b. Trouble shoot throttling 4-way valve. Refer to bulletin on Dynex throttling 4-way valve.
c. Worn cup leather (Serial No < 192522) or T-ring seal (Serial No > 192523). If none of the

previous conditions seem to have been the cause of the trouble, the cup leather or T-ring seal
may be worn out or damaged. To inspect this it is necessary to drain the oil and remove the
workhead from the press frame. Remove tube assembly (Item No. 48 & 49). Insert a rod into
the hole located on the top side of cylinder and unscrew workhead assembly from frame. Insert
rod into the hole on piston guide (item 47) and unscrew from cylinder. Remove piston from
cylinder. The cup leather or T-ring seal can now be inspected and replaced if necessary. Also
at this time, inspection of rod seal (item 44) and O-ring seal (item 43) is recommended.
Replace if necessary in reverse order being careful not to damage the T-ring seals and O-ring
seal.

2. If press will not develop rated tonnage.

a. Relief valve not set properly. This valve is located in the lower left hand front corner of the

manual valve. The valve has been set at the factory to by-pass oil from the pump back to the
reservoir when the pressure reaches rated capacity. To expose the relief valve for adjusting
remove the control handle ball (item 53), the control panel (item 57), and the hex cap nut. The
load on the spring which governs the pressure at which the valve will by-pass is adjusted by
turning the adjusting screw clockwise to raise the setting. Replace the hex cap nut, control
panel, and control handle ball after adjusting. The relief valve should not be tampered with after

it is once set at the capacity of the press.
b. Trouble shoot throttling 4-way valve. Refer to bulletin on Dynex throttling 4-way valve.
c. Worn cup leather or T-ring seal (see Section I, item C above)

3. If nothing happens when press is operated.
a. If motor does not run, the electrical circuit should be investigated.
b. If the ram will come down only a fraction of its rated stroke, check the oil level in the reservoir

with the ram at the top of its stroke. Oil should be visible when the oil level plug located on the
rear of the reservoir is removed.

4. If press is operating slow, check for use of improper oil. It is essential that the recommended oil, Mobil

DTE 24 or equal be used. Heavier oils cause marked reduction in the ram speed. DO NOT USE
HYDRAULIC JACK OIL!

5. If press builds pressure and is not contacting the work on the down stroke, the rated extended stroke

may be exceeded.

6. If press builds pressure on the return stroke the rated retract stroke may be exceeded.

CAUTION: Prolonged building of pressure at each end of the piston stroke may damage the
workhead.
CAUTION : When disconnecting any parts of this machine be extremely careful that all parts are
clean to prevent entrance of dirt in the hydraulic system.

Model 8-025, 8-050, 8-075 & 8-150

2

WARNING LABELS

Label 300168

Label 84487

Label 36511

84487

84399

76462

84395

300168

To the left is the safety Alert symbol. When you see these safety alert symbols on your press,
be alert to the potential for personal injury.

Follow recommended precautions and safe operating practices.
Carefully read all safety messages in these instructions and on your press safety signs.

Keep safety labels in good condition. Replace missing or damaged safety labels. This machine is intended
to be operated by one person. This person should be conscious of the press ram movement not only for

himself but also for persons in the immediate area of the machine.

Label Placement View

Model 8-025, 8-050, 8-075 & 8-150

3

22

23

24

25

26

27

28

36

34

24

31

32

33

19

Model 8-025, 8-050, 8-075 & 8-150

4