Dake 50H Datasheet

50H Press 2/2014
1
INSTRUCTIONS AND PARTS
LIST FOR MODEL 50H
HAND-OPERATED HYDRAULIC PRESS
SETTING UP THE PRESS FOR OPERATION
For shipping convenience, the gauge, pump handle, hoist crank, screw nose and base angles were removed
from the press. Assemble these parts to the press in the following order:
1. Bolt the base angles to the uprights using the four bolts and nuts furnished. Shoulder the base angles
against the stops on the uprights.
2. Install the pressure gauge using a hydraulic sealant to ensure a sealed fit.
3. Insert pump handle into handle socket and fasten in place by means of the setscrew on top of the handle
socket.
4. 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 before releasing the hoist crank when positioning the table channels for cable
tracking, servicing, or set-up for desired work opening. 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.
5. Fasten nosepiece to the end of the screw using the thumbscrew included.
OPERATIONS AND CONTROLS
The operator should acquaint himself with the use of the following controls:
1. The pump handle is the pressure supply source and is manually operated with an up and down motion.
2. Item number 45 (Part no. 10631) is the release valve handwheel. Always keep it firmly closed when
operating the press and it should only be opened when releasing the pressure to allow the ram to return.
3. By turning Item 25 (Part No. 716519), the ram screw can be adjusted into or out of the piston assembly.
Always keep the portion of the screw extending out of the piston as short as possible. It is advisable to
raise the table one or two sets of holes rather than running the screw out to its limit of travel. NEVER
EXCEED THE RECOMMENDED STROKE OF 4 INCHES FOR THIS PRESS. EXCEEDING THE
STROKE WILL CAUSE DAMAGE TO THE INNER PACKINGS.
4. The two combination table plates-v blocks provided are used for supporting the work while it is being
straightened.

50H Press 2/2014
2
SAFEGUARDING THE POINT OF OPERATION
ANSI B11.2 – Hydraulic Power Presses
Safety Requirements for Construction, Care and Use
It is important that Dake press users have a clear understanding of their responsibility involving the care and use
of their Dake hydraulic press, including point-of-operation safe guards. Dake strongly recommends that Dake
press users obtain a copy of the current American National Standard Institute (ANSI) B11.2 standard, for a
more complete understanding of their responsibilities.
ANSI B11.2 states the following, relative to point of operation safeguarding:
“Normally, only the employer (press user) can determine the requirements of the press productions system
components, including the dies and methods for feeding. There fore, the employer is ultimately responsible to
designate and provide the point-of-operation safeguarding system”.
The standard also discusses additional responsibilities of the employer. Some of the key responsibilities are:
•The employer is responsible for the safety, use and care of the hydraulic power press production system.
•The employer is responsible to consider the sources of hazards for all tacks to be implemented on the
hydraulic power press production system.
•The employer is required to eliminate or control identified hazards in the scope of their work activity.
•The employer is responsible for the training of personnel, caring for, inspecting, maintaining and
operating hydraulic press production systems to ensure their competence.
•The employer is responsible to provide and ensure that point-of-operation safeguarding is used, checked,
maintained and where applicable, adjusted on ever production operation performed on a press
production system.
A complete and current copy of the ANSI B11.2 standard can be obtained by contacting the following:
American National Standards Institute
1430 Broadway
New York, NY 10018
AMT – The Association for Manufacturing Technology
7901 Westpark Drive
Mclean, VA 22102
FILLING THE PRESS WITH OIL
It is extremely important that new, clean, light hydraulic oil be used in this press, Mobil DTE 24 or an
equivalent. It is strongly recommended that the oil be filtered to remove any possible dirt. The piston should
be in its maximum upper position when filling the reservoir. Fill the reservoir with 3 quarts of oil. UNDER NO
CIRCUMSTANCES USE OLD DIRTY OIL. Next remove the screw plug from the gauge extension on top of
the workhead, close the release valve handwheel and pump oil into the workhead until oil is visible in the stand
pipe. This will remove all air from the chamber above the piston. If oil leaks by the piston, the reservoir
should be drained and refilled (3 quarts of oil) with the piston in the top position.

50H Press 2/2014
3
ORDERING INFORMATION
Please order all parts by number and name. Also mention model number and serial number as shown on the
plate attached to the frame of the press. Prices for parts do not include shipping charges.
LUBRICATION
Keep all working parts of the press well oiled for easier operation. Also keep a light film of oil over the entire
surface of the ram to prevent rust.
WARNING LABELS
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 300168
Label 84487
Label 84399
Label Placement View
Label 6767
Label 607

50H Press 2/2014
4
TROUBLE SHOOTING – DAKE HAND HYDRAULIC PRESSES
PUMP PACKING LEAKAGE
If oil leaks past the pump packing, tighten the pump packing nut (551) until pump handle works hard, then
slack off just enough to cause the handle to stay in position by itself. After long periods of operation, it may be
necessary to install new pump packings.
IF PRESS DOES NOT HOLD PRESSURE
This condition is nearly always caused by dirt under pressure ball valve part number (586). See workhead
assembly drawing. To remedy this condition, first remove the reservoir drain plug and drain off all the oil in the
reservoir. Next, remove parts, 3/8” pipe plug (588), check valve spring (579) and valve ball (586) then clean
out port hole and valve seat thoroughly. Replace and using a small piece of brass rod as a drift, tap the brass
rod lightly to seat the ball properly. Replace spring and plug using extreme care to prevent dirt from entering.
Replace the drain plug and refill the reservoir with clean filtered oil.
If above procedure does not correct the condition, air may be present in the chamber above the piston and
should be removed as directed in Filling Press with Oil paragraph III.
SYMPTOM CAUSE SOLUTION
Oil leaking from
piston oil seal. 1) Reservoir is over filled. * 2) Piston Packing is worn or damaged. 1) Drain excess oil. 2) Replace Piston Packing.
Press will not hold
pressure.
Press will not build
rated tonnage.
1) Check Ball is contaminated.
2) Ball and Seat have poor contact.
3) Piston Packing is worn or damaged.
1) Pump Plunger Leather is worn or
damaged.
2) See 1,2,3 Above.
3) Gauge is defective.
1) Remove and clean Check
Balls and Seats.
2) Reseat Ball on Seat.
3) Replace Piston Packing.
1) Replace Pump Plunger
leather.
2) See 1,2,3 Above.
3) Replace Gauge.
Oil leaking from
pump plunger 1) Packing Nut Loose. 2) Worn Packings. 1) Tighten Packing Nut. 2) Replace packings.
Oil leaking from
release valve rod 1) Valve Rod Packing Nut is Loose 2) Packings are worn. 1) Tighten Packing Nut. 2) Replace Packings.
Pump handle drifts
up. Defective Check Ball or Check Ball Spring. Clean Check Ball, Reseat. Replace Spring.
Ram will not return. Return Spring damaged.
Piston is bent or damaged.
Piston Packing is defective.
Replace Spring.
Replace Piston.
Replace Piston Packing.
* Note: If press leaks around the ram but holds pressure the reservoir has been overfilled.
724 Robbins Road
Grand Haven, MI 49417
Phone: [phone]
Fax: [phone]
Web: www.dakecorp.com
E-mail: [e-mail]
[e-mail]

50H Press 2/2014
5
HANDPUMP ASSEMBLY
Item Qty Description
Part
No.
1 1 Pump Body 546
2 3 Ball valve ½” Dia. 586
3 1 ¼“-20 x ½“ Nylock Hex Cap Screw 28297
4 1 Washer #12 Flat 43629
5 1 Pump Plunger Leather 599
6 1 Check Valve Spring 579
7 1 Fitting, Tube, Poly-Tite 71413
8 7 Pump Packing 573
9 1 Pump Packing Nut 551
10 1 Handle Socket 550
11 1 Handle Socket Link 555
12 6 3/8” Retaining Rings 43972
13 1 Pump Plunger 554
14 3 Handle Socket Pin 594
15 1 Valve Rod 1129
16 1 Valve Rod Packing Nut 576
17 8 Valve Rod Packing 987
18 1 3/8” Pipe Plug 588
19 1 3/8”-16 x 5/8” Set Screw 43589
20 1 Pump Gasket 591
Hand Pump Assembly Complete
700887
Repair Kit
–
Cylinder & Hand Pump Assembly
(Includes – Items 5,8,17,20,26B,27,34,38) 701291

50H Press 2/2014
6
WORKHEAD ASSEMBLY
Item
Qty
Description
Part
No.
21 1 Pump Gasket 591
22 1 Reservoir 540
23 1 Screw Nose – Flat (Thumb Screw if needed 43618) 572
1 Screw Nose – V-ram nose (Thumb Screw if needed 43618) 344
24 1 Screw 559
25 1 Handwheel 716519
26A 1 Clamp Ring Assembly 717
26B 1 Piston Bumper 605
27 1 Oil Seal 1267
28 1 Pipe Plug, 1/8” NPTF 589
29 1 Elbow, Pipe Street1/2” 590
30 1 Pipe Plug, ½" NPTF 596
31 1 Spring, Ram 556
32 & 33 1 Piston Assembly (Serial No. < 192522) 701801
Piston Assembly (Serial No. > 192523) 716222
34 1 Piston Leather (Serial No. < 192522) 557
Packing Ring (Serial No. > 192523) 17878
35 1 Cylinder – 50 Ton 536
36 1 Handwheel 716521
37 1 Yoke 593
38 1 Gasket, Cylinder 1268
Repair Kit
–
Cylinder & Hand Pump Assembly
(Includes – Items 5,8,17,20,26B,27,34,38) 701291

50H Press 2/2014
7
Item
Qty
Description
Part No.
39
1 1 Gauge Bushing 71266 81384
40 1 Gauge Extension 731
41 4 Roller 592
42 4 Roller Screw 595
43 1 Dake Name Plate 81002
44 1 Air Vent Tube 632
45 1 Handwheel 10631
46 2 V-Block 336
47 2 Table Plate 545
48 4 Table Pins 569
49 2 Table Channel 701091
50 1 Frame only 700116
51 2 Base Angle 566
52 2 3/8 NPT 37°Fitting 1251
53
2 2 Fitting Nut Fitting Sleeve 46614 51454
54 1 Tube Assembly (53 & 54) 700117
55 1 Handle 218
56 2 Pulley 602
2 Pulley Bolt 43342
2 Pulley Nut 43912
57 1 Vent Tube 67761
58 2 Fitting, Tube, Poly-Tite 71413
59 1 Cable 580
60 4 Cable Clamps 991
61 4 Table Spacer 716692
TABLE HOIST
Item Qty Description
Part
No.
62
63 1 Hand Crank Assembly 701653
64 1 Worm Shaft 384
65 2 Retaining Ring 27437
66 1 Worm Key 47364
67 1 Worm 385
68 1 Hoist Frame 725
69 2 Hex Cap Screw 43335
70 2 Hex Nut 43912
71 1 Drum Shaft 724
72 1 Drum Key 737
73 1 Worm Gear 736
74 1 Cable Drum 723
75 1 Retaining Ring 43992
Complete Table Hoist Assembly
700112
FRAME ASSEMBLY