Manuual for SQT series hydraulic torque wrenches

Web: http://www.hydraulic-torque-tools.com

Shanghai Jiangnan Machinery Factory

JLTorTool SQT-Series
Sq Drive Hydraulic Torque Wrenches
Operations & Repair
Manual
-1Contact：Victor Huang；Skype：victorhuang586；Tel: 0086 (0)21-51506668-58 Fax: 0086 (0)21-51506669
Mobile：0086 13524557984；Email：victorhuang668@hotmail.com；victor.huang@alfa-sh.com；qq:455208458;



JLTorTool SQT series square drive torque wrench
Special emphasis: SQT Hydraulic Torque Wrenches is the power tool for any power
tool, indeed, a reliable security prevention are very important, the following is important to
note a few suggestions.
● Read all the technical documents.
● Try to make the working environment clean and bright.
If the environment in the workplace air explosion could have any potential, you may not
use electric pumps, pneumatic pumps should be used. If metal crash sparks, should take
preventive measures.
● Reaction arm
Hydraulic Torque Wrenches operation requires proper reaction fulcrum, according to the
site need to adjust the reaction arm or the appropriate reaction arm position. If still not
working, please consult the JLTorTool.

● To avoid the tools (Hydraulic Torque Wrenches) misuse
Pumps operate the remote control just for the wrench to use, to avoid separating the operator and
the pump is too far.
● Ensure operation of space
Hydraulic Torque Wrenches is not in use most of the hand, if you must use the hand or in the case
of the fixed wrench, should think of other ways to achieve their goals.



● Avoid electric shock
With electric pump to ensure a good grounding and proper power supply voltage.
● Hydraulic Torque Wrenches should be saved without good
Temporarily unused Hydraulic Torque Wrenches and wrench accessories should be properly
stored to avoid damage.
● Using the appropriate Hydraulic Torque Wrenches
Not with a small torque wrench or hydraulic accessories to replace the Hydraulic Torque
Wrenches work, not unsuitable to work the Hydraulic Torque Wrenches.
● Wear appropriate labor protection products
When using the manual / motorized hydraulic equipment, you should use gloves, helmets, safety
shoes, ear protection, labor insurance and other protective clothing.
● Safety glasses
● Mobile Devices
Do not drag through the hydraulic tubing, rotary joints, hydraulic power cord or external cables,
etc. to move the unit. Hydraulic Torque Wrenches comes with handles, can be used to move
equipment.
● High-pressure tubing
Do not bend, fold tubing, always check the tubing, if damaged, should be replaced.
● Dust cover and side cover
All tools have dust cover and side cover, so that internal moving parts and the separation of the
external environment, in addition to JLTorTool professional maintenance staff, users do not want
to disassemble or use tools without guards.
● Careful to maintain the Hydraulic Torque Wrenches
To ensure the best performance tool, should always check the tool itself, the power source, tubing,
quick connectors, wires, attachments to prevent some common damage occurs. Should be in the
proper Hydraulic Torque Wrenches, hydraulic pump unit to repair the maintenance guide.
More detailed maintenance instructions please refer to maintenance section.
● Vigilance
To maintain attention at work, can not be used in an unstable state of power equipment.
● Preparation before operation
Ensure that all hydraulic couplings are indeed connected. Check the hydraulic tubing is not
entangled, to determine the square head drive shaft and maintain the cap is secure, reliable joint
then. Ensure that all connectors, elbows, swivels without distortion or damage.



● Preparation before use
Rotate the drive shaft of Hydraulic Torque Wrenches square head is observed with good function.
Looking for a fixed surface, choose a good spot, make sure the reaction arm to support reliable, to
ensure that the hydraulic tubing is not suppressed. System pressure, if the Hydraulic Torque
Wrenches beating or shaking, stop and then re-adjust the reaction arm and the anchor, to make it
more solid and safe.

Note: The operation, reaction arm should be kept clean, and the role of
anti-surface between the arms cannot have a foreign body.
● Please stick with quality accessories
Use high strength sleeve because the sleeve has the exact size of high-quality, and nuts are a good
match. Hidden crack has the potential to rupture the sleeve in use, so proper maintenance of the
sleeve, the sleeve in operation to keep clean and manipulation.
Do not use force, but do not use a hammer sleeve, as well as tools to increase the force, if you are
not using a Hydraulic Torque Wrenches turn the nut, use a larger device JLTorTool Hydraulic
Torque Wrenches.

Note:

JLTorTool designed only to drive the hydraulic pump JLTorTool Hydraulic Torque

Wrenches; improper use may cause damage to the hydraulic pump or Hydraulic Torque
Wrenches.




DRIVE DIRECTION CHANGE
To remove the square, disengage the drive retainer assembly by depressing the center round button
and gently pulling on the square end of the square drive. The square drive will slide easily out.

To insert the drive in the tool, place the drive in the desired direction, engage drive and bushing
splines, then twist drive and bushing until ratchet spline can be engaged. Push drive through
ratchet. Depress drive retainer button, engage retainer with drive and release button to lock.

Right is tight.
Left is loose.

SETTING THE REACTION ARM
All JLTorTool’s Torque wrenches are equipped with a universal reaction arm. These reaction arms
are employed to absorb and counteract forces created as the unit operates. The reaction arm should
extend in the same direction of the square drive; however, slight adjustments may be made to suit
your particular application. The function of a reaction:

Device is to hold the tool in position against the forces generated to tighten or loosen bolts or nuts.
Hydraulic Torque Wrenches generate tremendous force. The reaction arm can be positioned in
numerous places within a 3600 circle. However, for the arm to be correctly positioned, it must be
set within a 900 quadrant of that circle. That quadrant is the area located between the protruding
square drive and the bottom of the housing away from the swivel inlets. It will always be toward
the lower half of the housing and on one side of the housing when tightening and the other side
when loosening.



SETTING THE SQUARE DRIVE FOR ROTATION
The position of the square drive when looking toward the shroud will determine if the tool is set to
tighten or loosen the nut. When the square drive extends to the left when looking at the shroud
with the inlets away from you, the tool is set to loosen the nut. When the square drive extends to
the right, the tool is set to tighten the nut. To change the direction of rotation for JHM series
wrenches simply push the square drive into the housing until the drive projects out the opposite
side of the tool.

SETTING THE TORQUE
After determining the desired torque, use the torque conversion charts to determine the pressure
that is necessary to achieve that torque.
1. Connect the tool to the power supply and turn the pump on.
2. Depress the advance remote control button causing the pressure to be shown on the gauge.
3. Adjust the pressure by first loosing the nut that locks the pressure adjustment handle and
then rotate the handle clockwise to increase the pressure and counter clockwise to decrease the
pressure. When decreasing pressure, always lower the pressure below the desired point and then
bring the pressure gauge back up to the desired pressure.
4. When the desired pressure is reached, retighten the lock nut and cycle the tool again to
confirm that the desired pressure setting has been obtained.

OPERATING THE WRENCH
1. Place the square Drive in the socket, insert the socket retainer ring and pin, and place the socket
to the nut. Make certain the square drive and socket are the correct size for the nut and that the
socket fully engages the nut.
2. Position the reaction arm against an adjacent nut, flange or solid system component.
Make certain that there is clearance for the hoses and swivel couplings. Do not allow the tool to
react against the hoses, or swivel couplings. When reacting directly off the tool body with reaction
arm removed. Do not react off the exposed end plug spigot.



3. After having turned the pump on and presetting the pressure for the correct torque, depress the
remote control advance button to advance the piston assembly.
4. When the wrench is started, the reaction surface of the wrench or reaction arm will move
against the contact point and the nut will begin to turn. Once the piston reaches the end of its
stroke depress the remote control return button to retract the piston.
5. Continue this cycling operation of advance and retract until the nut is no longer turning and the
pump gauge reaches the preset pressure. The piston rod will retract when the retract button is
pressed and under normal conditions, an audible “click” will be heard as the tool resets itself.
6. Continue to cycle the tool until it “stalls” and the preset psi/torque has been attained.
7. Once the nut stops rotating, cycle the tool one last time to achieve total torque.

CAUTION
During the operation, if the tool locks on to the nut, press advance button on remote and build
pressure-continue to press down on remote while pushing down on the reaction pawl-release
remote while continuing to push down on reaction pawl, then the tool will the released from the
nut.


TROUBLE


PROBABLE CAUSE
Couplers are not securely
attached to the tool or pump

Piston will not advance

Coupler is defective

or retract
Defective remote control unit

SOLUTION
Check the coupler connections
and make certain that they are
connected.
Replace any defective coupler
Replace the button and/or control
pendent

Dirt in the direction-consol valve Disassemble the pump and clean
o the pump unit

the direction-control valve
Make certain the advance on the
pump is connected to the

Hose connections reversed

advance on the tool and retract
on the pump is connected to the
retract on the tool

Piston will not retract
Retract hose not connected

Retrace pin and/or spring broken

Cylinder will not build up
pressure

Piston seal and/or end plug seal
leaking

Connect the retrace hose
securely
Replace the broken pin and/or
spring
Replace any defective o-ring

Coupler is defective
Grease or dirt build up in the
Square Drive will not turn

Replace
Disassemble the Ratchet and

teeth of the ratchet and segment clean the grease or dirt out of the
pawl

teeth

Worn or broken teeth on ratchet Replace any worn or damaged
and/or Segment Pawl
Defective relief valve

parts
Inspect, adjust or replace the
relief valve
Make certain the amperage,

Electric power source is too
Pump will not build up

voltage and any extension aord

low

size comply with the pump
manual requirements

pressure
Defective gauge

Replace the Gauge

Low oil level

Check and fill the pump reservoir

Clogged filter
Nut Return with retract
stroke

Inspect, clean and/or replace the
pump filter

Ball Plungers are not engaging

Thread the Ball Plungers to the

the Drive Sleeves

correct depth in the Housing




SQT Exploded Diagram



Pressure(Mpa)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35


SQT-3 Torque/Pressure
Chart
Torque(Nm)
Pressure(Mpa)
64
36
128
37
191
38
255
39
319
40
383
41
447
42
510
43
574
44
638
45
702
46
766
47
829
48
893
49
957
50
1021
51
1085
52
1149
53
1212
54
1276
55
1340
56
1404
57
1468
58
1531
59
1595
60
1659
61
1723
62
1787
63
1850
64
1914
65
1978
66
2042
67
2106
68
2169
69
2233
70

Torque(Nm)
2297
2361
2425
2488
2552
2616
2680
2744
2808
2871
2935
2999
3063
3127
3190
3254
3318
3382
3446
3509
3573
3637
3701
3765
3828
3892
3956
4020
4084
4147
4211
4275
4339
4403
4466

- 10 Contact：Victor Huang；Skype：victorhuang586；Tel: 0086 (0)21-51506668-58 Fax: 0086 (0)21-51506669



- 11 Contact：Victor Huang；Skype：victorhuang586；Tel: 0086 (0)21-51506668-58 Fax: 0086 (0)21-51506669

Manuual for SQT series hydraulic torque wrenches

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