Clarke Strong-Arm CSA20F Instruction Manual

WARNING: Read these instructions before using the machine
OPERATION & MAINTENANCE
INSTRUCTIONS
GC0913
20 TONNE HYDRAULIC PRESS
MODEL NO: CSA20F
PART NO: 7614055

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INTRODUCTION
Thank you for purchasing this CLARKE 20 Tonne Hydraulic Press.
Before attempting to operate the machine, it is essential that you read this
manual thoroughly and carefully follow all instructions given. In doing so you
will ensure the safety of yourself and that of others around you, and you can
also look forward to the press giving you long and satisfactory service.
GUARANTEE
This CLARKE product is guaranteed against faulty manufacture for a period of
12 months from the date of purchase. Please keep your receipt as proof of
purchase.
This guarantee is invalid if the product is found to have been abused or
tampered with in any way, or not used for the purpose for which it was
intended.
Faulty goods should be returned to their place of purchase, no product can
be returned to us without prior permission.
This guarantee does not effect your statutory rights.

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SAFETY PRECAUTIONS
1. During assembly or if the press is moved, always call for the help of an
assistant, do not manhandle single-handedly.
2. Ensure the press is bolted down onto a solid, flat surface.
3. Ensure the press is located on firm level ground with adequate light.
4. Before applying a load, ensure all press bed support pins are fully
engaged.
5. Ensure that hydraulic hoses and couplings are completely sound.
6. Before use, always ensure the workpiece is firmly secure and stable
7. Always clean spills of hydraulic oil immediately as this can be dangerous in
a workshop environment.
8. Do not exceed the rated capacity of the press.
9. Do not allow any person who is inexperienced in the use of hydraulic
presses, to use the press unless they are under direct supervision.
10. Do not allow anyone to work directly in front of the press when it is in use.
11. Never tamper with the press. The safety valve is calibrated and sealed at
the factory; do not attempt to change the setting.
12. Use only the recommended hydraulic oil.
13. Components of this press are specially designed to withstand the rated
capacity. Do not substitute bolts, pins, or any other components.
14. Always apply the load under the centre of the ram. Offset loads can
damage the ram or ram mount and may cause the work piece to eject.
15. Before operating, check for signs of cracked welds, bent bed pins, loose or
missing bolts, or any other structural damage. Do not operate if any of
these conditions exist. Have repairs made only by authorised service
centre.
16. Remove load from press bed before attempting to adjust bed height.
17. Press only on a work piece supported by the press bed.
18. When using accessories such as arbor plates, be certain they are centered
below the ram and are in full contact with the bed.
19. Parts being pressed may splinter, shatter, or be ejected from the press. Due
to varied applications, it is your responsibility to always use adequate
guards, wear eye protection and protective clothing when operating this
press.

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20. Keep hands and fingers away from parts that may pinch and shift.
21. Failure to heed these warnings may result in damage to the equipment, or
failure resulting in property damage, personal, or even fatal injury.
22. DO NOT use extension tubes on the pump handle. Excessive effort can
cause damage and/or accidents.
UNPACKING
Ensure the press and its components suffered no damage during transit and
that all components are present. Should any loss or damage become
apparent, please contact your CLARKE dealer immediately
INVENTORY
• 1xFrame
• 2 x Base Supports
• 4 x Stay Bars
• 1xRam
• 1 x Ram Baseplate
• 1xPump
• 1 x Pump Handle
• 1 x Hose Assembly (attached to frame)
• 1 x Pressure Gauge
• 1 x Press Bed (Frame)
• 2 x Bed Support Pins with 4 x retaining spring clips
• 2 x Bed blocks (V-blocks)
• 1 x Instruction Manual
• 1 x Fixing Kit (containing bolts, flat washer, spring washers & nuts,
compression springs & hydraulic fittings).
TOOLS REQUIRED
• Open spanners (10, 12, 17, 19, 22, 27 & 29 mm) or an adjustable wrench
• PTFEtape

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ASSEMBLY
IMPORTANT: Due to the weight of the press components, we recommend
that you get assistance during assembly.
IMPORTANT: We strongly recommend that the press be firmly secured to a
firm and level floor using expansion bolts (not supplied). Holes are provided
in the base supports for this purpose.
IMPORTANT: Do not locate your press where it will be open to the elements,
as severe weather conditions will damage the hydraulic parts.
1. With the help of an assistant,
attach the feet to the frame using
the nuts, bolts and washers.
2. Add the stay bars to each side
and bolt into place.
3. Lift the frame assembly upright
and manoeuvre it to its intended
location in the workshop.
4. With the help of an assistant, install
the ram support carriage into the
upper frame section by
assembling the baseplate, the
two axles and the four sprung
locking bolts/springs as shown in
Fig 2.
5. Tighten the locking bolts loosely so
that the carriage can still move to
and fro along the frame.
6. The hydraulic hoses must be
correctly installed within the
frame. Check that both the hoses
pass through the supporting rings
and that the T-connector sits
upright when the connecting
parts are fitted to the supporting
bracket but do not tighten at this
stage.

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7. Fit the pressure gauge to the
connecting nut, sealing the
thread with PTFE tape.Check the
gauge is upright before tightening
the nut with a 19 mm spanner.
8. Make a small hole in the pressure
gauge safety bung with a short
pin or nail before use.
• Do not use a long nail as you may
damage the internal components
of the gauge.
9. Lower the ram through the hole in
the moving carriage and secure
in position using the locking collar.
10. Connect the hydraulic hose to the
ram cylinder, sealing the joint with
PTFE tape, and tighten using two
open spanners.

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11. Bolt the hydraulic pump into
position on the side of the frame
using the fixing bolts, nuts and
washers.
12. Ensuring that the hydraulic hose
passes through the retaining loop
on the frame, unfasten the
protective hose cap and screw
the hose onto the threaded
connection of the hydraulic
pump.
13. We recommend sealing the
thread with PTFE tape. Take care
not to let any oil escape while
connecting the hose.
14. Insert the bed support pins into
the holes in the frame side
supports at a height of your
choosing. Secure them in position
using the spring clips.
15. Lift the bed frame into position on
the pins.
IMPORTANT: Due to the weight of the
bed, we recommend that you get
assistance from another person.
ADDING A MANDREL SET
A mandrel set (including storage
bracket and pressure plate) is not
supplied with the press but is
available as Clarke part no 7615062.
1. Bolt the mandrel storage bracket
to the side of the frame using the
bolts supplied.
2. Store the mandrels (including the
adaptor) in their positions on the
storage bracket.

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PREPARATION FOR USE
1. Insert the pump handle into the
pump actuating lever.
2. Purge any air from the system by
opening the release valve
(turning the control knob anti-
clockwise) and pumping several
full strokes to eliminate any air
bubbles. Close the valve using the
control knob.
POSITIONING THE BED
IMPORTANT: Due to the weight of the bed, we recommend that you get
assistance from another person when adjusting the bed height.
1. Position the bed at the desired height, so that it will be as close as possible
to the ram when the workpiece is mounted on it.
2. Raise one side of the bed and insert a supporting pin into the next locating
hole.
3. Repeat at the other end to level the bed.
4. Repeat until the bed is at the desired height, with the supporting pins held
by the spring clips.
POSITIONING THE RAM
1. Position the ram as required by
sliding the carriage along the
cross-beam. Lock it in a static
position with the four sprung
locking bolts.
• Always position the ram directly
above the workpiece.
CAUTION: THE BED HEIGHT SHOULD ONLY BE RAISED OR LOWERED ONE
HOLE AT A TIME, WORKING ALTERNATELY FROM ONE SIDE AND THEN THE
OTHER, FAILURE TO WORK IN THIS WAY MAY CAUSE THE BED TO FALL
AND CAUSE INJURY TO THE OPERATOR.

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FITTING THE MANDRELS
If a set of mandrels is available, any
one may be connected to the end
of the ram using the adaptor
supplied.
Alternatively, the basic pressure cap
can be fitted as shown. Secure the
pressure cap by tightening the grub
screw with a suitable hexagonal key.
To install a mandrel, the adaptor must
be fitted instead of the pressure cap.
Secure the adaptor by tightening the
grub screw with a suitable hexagonal
key as previous.
Select your mandrel depending
upon the size of the workpiece
bearing surface.
The mandrel can then be pushed
into the adaptor where the built-in
spring clip will hold it in place.
Store the mandrels in their positions
on the storage bracket when not in
use.
POSITIONING THE BED BLOCKS
The bed blocks can be placed on
the bed with either the flat face or
the V-supports facing upwards.
They are prevented from slipping out
of position by the retaining pins which
drop down within the confines of the
bed side members.
Check all parts are secure and
correctly aligned before using the
press.

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OPERATION
1. Place the workpiece on the bed. It must be completely stable and
supported by packing or shims where required. Steel pressing plates are
supplied, which locate on the bed. Place the workpiece on a combination
of these to give it stability.
NOTE: Any packing pieces or shims used MUST be capable of
withstanding the pressure that will be brought to bear, and MUST
be of sufficient size with sufficient surface area, so as to avoid the
possibility of slipping or springing out. Mating surfaces MUST be
horizontal so that the force being exerted will NOT be at an angle.
2. Close the release valve by turning
it clockwise until tightly closed.
3. Pump the handle to bring the ram
very lightly into contact with the
workpiece.
4. Manoeuvre the workpiece or slide
the ram to one side so that the
desired point of contact is directly
beneath the centre of the ram.
5. When satisfied that the workpiece
is correctly aligned and is completely stable in that position, slowly pump
the handle so that the ram begins to exert pressure on the workpiece.
Continue to pump the handle whilst standing to the side. Do NOT stand
directly in front of the work, and constantly monitor the process, ensuring
the ram and work remain completely in line and there is no risk of slipping.
6. When the process is complete, turn the release valve anticlockwise in small
increments to release ram pressure and allow removal of the workpiece.
CAUTION: DO NOT POINT LOAD THESE ACCESSORIES AS THEY ARE NOT
DESIGNED TO TAKE THE FULL FORCE OF THE RAM IN ONE SPOT. ENSURE
THEY ARE ADEQUATELY SUPPORTED.
WARNING: NEVER USE EXTENSIONS TO THE RAM PUMPING HANDLE

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MAINTENANCE
• A visual inspection must be made before each use of the press, checking for
leaking hydraulic fluid and damaged, loose, or missing parts.
• Owners and/or users should be aware that repair of this equipment requires
specialised knowledge and facilities. It is recommended that a thorough
annual inspection of the press be made and that any defective parts be
replaced with genuine Clarke parts.
• Any press which appears to be damaged in any way, is found to be badly
worn, or operates abnormally SHOULD BE REMOVED FROM SERVICE until the
necessary repairs are made.
• If the press is not to be used for any length of time, store it with the ram piston
withdrawn and the operating handle in the lowered position to protect the
moving parts.
PERIODICALLY
• Check the press frame to make sure all bolts are tight and inspect for
cracked welds, bent, loose or missing parts.
• Check the hydraulic connections for leaks. Replace or properly repair any
damaged or leaking hydraulic components before using. In the event of
leaking seals, oil can be topped up via the plug on the end of the pump. Oil
should be level with the bottom of the hole. If necessary top up with CLARKE
hydraulic oil, Part No. 3050830. This task is carried out with the ram fully
retracted.
• If any rust is apparent it must be removed completely and the paint restored.
DE-COMMISSIONING THE PRODUCT
Should the product become completely unserviceable and require disposal,
draw off the oil into an approved container and dispose of the product and
the oil according to local regulations.

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TROUBLESHOOTING
Problem Probable Cause Remedy
Pump unit will not work Dirt on valve seat/warn
seals
Bleed pump unit or have
unit overhauled with new
seals
Pump will not produce
pressure
Pump feels hesitant
under load
Pump will not lower
completely
Air-lock Open the release valve
and remove the oil filler
plug. Pump the handle a
couple of full strokes and
close the release valve.
Replace the filler plug.
Pump will not deliver
pressure
Reservoir could be over-
filled or have low oil level.
Check oil level by
removing the filler plug
and topping up to the
correct level.
Pump feels hesitant
under load
Pump cup seal could be
worn out.
Have the cup seal
replaced.
Pump will not lower
completely
Air-lock Release air by removing
the filler plug

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TECHNICAL SPECIFICATIONS
Capacity 20 Tonne
Operating Pressure 69 Mpa
Bursting Pressure 138 Mpa
Ram Travel 189 mm
Ram Shaft Diameter 76 mm
Net Weight 138 kg
Dimensions D x W x H 560 x 800 (exc pump) x 1610
Throat Width 550 mm
Throat Depth (Ram to pressing plate) Platform at highest;- 30 mm
Platform at middle;- 470 mm
Platform at lowest;- 1025 mm
Ram travel per stroke 1.1 mm
No of strokes to full extension 170
Pressure Gauge type Accuracy class 2.5
Length of Handle 620 mm

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FRAME ASSEMBLY PARTS DIAGRAM

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FRAME ASSEMBLY PARTS LIST
MANDREL SET (CLARKE PART NO 7615062)
NOTE: When requesting spare parts, please quote the prefix TGCSA20F
followed by the number on the diagrams/parts lists here.
PART NO DESCRIPTION PART NO DESCRIPTION
1 Bolt M10 x 30 19 Ram Securing Collar
2 Stay Bar 20 Upper Hydraulic Hose
3 Bolt M12 x 35 21 Connector
4 Frame Supporting Foot 22 T - Connector
5 Flat Washer 10mm 23 M10 Nut
6 10mm Spring Washer 24 Connecting Nut
7 M10 Nut 25 Lower Hydraulic Hose
8 Flat Washer M12 26 Washer
9 Bolt M12 x 35 27 Hydraulic Hose Washer 6mm
10 M12 Nut 28 Pressure Gauge
11 Press Bed 29 Pump Assembly
12 Main Frame 30 Elbow
13 Pinch Bolt M8 x 110 31 Pump Handle
14 Compression Spring 32 Bed Supporting Pins
15 Roller Shaft 33 Spring Clip
16 Axle Bolt 34 Bed Blocks
17 Bearing Assembly 35 Ram Base Plate
18 Ram Assembly 36 Bolt M10 x 25
PART NO DESCRIPTION PART NO DESCRIPTION
37 Mandrel/Adaptor Bracket 44 25mm Mandrel
38 10mm Mandrel 45 30mm Mandrel
39 12mm Mandrel 46 Pressing Plate
40 16mm Mandrel 47 Bolt M12 x 30
41 18mm Mandrel 48 Flat Washer M12
42 20mm Mandrel 49 Spring Washer M12
43 22mm Mandrel 50 M12 Nut
51 Plain Adaptor

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RAM PARTS DIAGRAM
PART NO DESCRIPTION PART NO DESCRIPTION
R1 Dust Cap R12 Protective End Cap
R2 Coupling Bolt R13 Bolt M8 x 40
R3 Cylinder Screw R14 Ram
R4 Cylinder R15 Piston Ring
R5 Seat of Cylinder R16 Piston Cap
R6 Locking Collar R17 O-ring
R7 Nut M6 R18 O-ring
R8 Spring R19 O-ring
R9 End Pressure Cap R20 Rectangular Ring
R10 Bolt M6 x 7 R21 Protective Ring
R11 Retainer Nut R22 Pin M8 x 10

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PUMP PARTS DIAGRAM
PART NO DESCRIPTION PART NO DESCRIPTION
P1 Nut P16 Steel Ball
P2 End Plate P17 End Block Assembly
P3 O-Ring P18 Lever Assembly
P4 Side Plug P19 Bolt
P5 Cylinder P20 Spring
P6 Tie Rod P21 O-Ring
P7 Pin P22 Plug
P8 Steel Ball P23 Washer
P9 Valve End P24 Piston
P10 Spring P25 End Cap
P11 Washer P26 Seal
P12 Valve Body P27 O-Ring
P13 Cap P28 Piston Rod
P14 Control Knob P29 Clevis Pin
P15 O-Ring P30 R-Clip

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DECLARATION OF CONFORMITY

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NOTES
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