Oilquick Oq 70/55 User manual

OPERATING MANUAL

AND FITTING

INSTRUCTIONS

OilQuick quick coupler with automatic

hydraulic connection for excavators

OQ 70/55 and 80

Specifications subject to change without notice.

Please read the instructions carefully

before using the quick coupler.

Dear Customer,

We congratulate you on your purchase of an OilQuick quick coupler system.

OilQuick is the most advanced quick coupler system for excavators and can be supplied in various models for

machines from 1 to 120 tons.

The modular OilQuick system is available as a standard hydraulic hitch or also with OilQuick function, which

allows hydraulic attachments to be connected or disconnected automatically from inside the cab.

Hydraulic attachments that can be used include Grab John buckets, tiltrotators, compactors, sorting grapples

and hydraulic hammers.

The OQ 70/55 model is suitable for excavators from 18 to 28 tons operating weight.

The OQ 80 model is suitable for excavators from 25 to 45 tons operating weight.

OilQuick products bear the CE marking and comply with all the applicable safety regulations.

When installing, using and repairing OilQuick quick coupler systems, please ensure that you meet all the

requirements.

Changes may only be made to OilQuick quick coupler systems with the approval of OilQuick AB.

Any unauthorized changes will void the warranty and CE-marking.

Please send us the completed warranty card as soon as possible.

We hope you enjoy the benefits and wish you every success with your new OilQuick quick coupler system.

Introduction

These instructions apply to models OQ 70/55 and OQ 80.

Components are also described in the instructions that are optional accessories, which you may not have

ordered with your new quick coupler system. Please observe all the safety regulations and ensure that your

equipment is properly maintained. This will minimize the risk of damage and injury.

Subject to change without notice. Errors and omissions excepted.

This is a translation of the original manual.

Please read the instructions carefully before mounting and using the quick coupler system.

Information in boxes as illustrated below are

warnings that you should read particularly

carefully and understand.

Ignoring such warnings may result in personal

injury or damage to property.

 Example

Information in boxes as illustrated below

contains important notes that you should read

carefully and understand.

 Example

Detach here

Registration card for product warranty

The warranty is only valid if your new OilQuick product is installed correctly on the excavator and

attachment. Completing and sending in the registration card to OilQuick AB registers you as the

warranty holder for this product.

Unless otherwise agreed, the warranty terms included in this product manual shall apply.

The identification plate on the product shows details of the product model and serial number.

If you have any questions, please do not hesitate to contact your excavator dealer.

Please send the completed registration card to:

OilQuick AB

Box 1055

82412 Hudiksvall

Sweden

Tel: +46 650 15340

Fax: +46 650 14884

E-mail: information@oilquick.com

Name of excavator dealer:

Name and address of customer:

Tel: Fax:

E-mail:

OilQuick quick coupler model:

Serial no.:

Excavator model: Excavator weight:

Date installed:

Hydraulic attachments used:

Received by OilQuick AB on:

Declaration of Conformity

The company OilQuick AB

Box 1055

SE-824 12

Hudiksvall

SWEDEN

hereby certifies that the quick coupler system

Designation Quick Coupler

Type

Serial no.

Year of manufacture

Weight

conforms to the requirements of Machinery Directive

2006/42/EC and the applicable regulations in

European standards EN 474-1, EN 474-4 and

EN 474-5, and machine regulations 2008:3 issued by

the Swedish Work Environment Authority.

Before operating the quick coupler, additional risks

that may arise from mounting the coupling device on a

machine or other type of attachment carrier must be

investigated and compliance with the regulations

stated in the above guidelines determined.

Name Åke Sonerud

Position General Manager

Hudiksvall, Sweden

Version 1.1 62011-06-28

Dear Customer 2

Introduction 2

Registration card for product warranty 3

Contents 5

Declaration of Conformity 6-7

1. OilQuick quick coupler system components 8

1.1 Coupler part 8

1.2 H-cylinder 8

1.3 Attachment frame for mechanical tools 8

1.4 Attachment frame for hydraulic tools 9

1.5 V-90 electric coupling (option) 9

1.6 1/2" electric coupling (option) 9

1.7 Locking hydraulic kit (option) 9

2. Quick coupler functionality 10

3. H-cylinder –function and requirements 11

4. Technical data 12

4.1 General data 12

4.2 Quick coupler 12

4.3.1 Attachment frame for mechanical tools without coupling ramp 13

4.3.2 Attachment frame for hydraulic tools with coupling ramp 13

4.3.3 Hydraulic tool adapter plate with coupling ramp 13

4.3.4 Hydraulic tool special adapter with coupling ramp 13

5. Quick coupler installation 14

6. Hydraulic system installation 15

7. Coupling an attachment 16-17

7.1 Checking hydraulic tools 17

7.2 Checking mechanical tools without hydraulic system 17

8. Lock test for mechanical tools 18

9. Setting down a tool 18-19

10. Using the hoisting hook 20

Contents

Version 1.1 72011-06-28

11. Checking the attachment frame 21-22

12. Starting and stopping the excavator for maintenance work 22

13. Inspection and maintenance 23

13.1 Daily inspection 23

13.1.1 At the start of the working day 23

13.1.2 At the end of the working day 23

13.2 Monthly inspection 23

14. Maintenance of quick couplers on H-cylinders 24

14.1 Replacing the nose seal in the female connector 24

14.2 Replacing quick couplers secured with circlips 25

14.3 Replacing quick couplers secured with nose nuts 26

15. Troubleshooting 27

16. Plates and stickers 28

17. Terms of warranty 29

Version 1.1 82011-06-28

1412

1.3 Attachment frame for mechanical tools

11. Attachment

12. Front frame pin

13. Rear frame pin

14. Side part

1.2 H-cylinder

5. H-cylinder

6. Cylinder holder

7. Hydraulic hoses for locking and unlocking

8 Locking plungers

9 Indicator rod

10. Dirt guard 8

10 10

1. OilQuick quick coupler system components

The following section describes the various components in

the OilQuick quick coupler system.

1.1 Quick coupler body

1. Coupler body

2. For attaching to the excavator arm

3. For attaching to the linkage

4. Fingers

Dirt guard closed Dirt guard open

Version 1.1 92011-06-28

1.7 Locking hydraulic kit (option)

24. Control switch with double command function

25. Alarm

26. Electric selector valve, 4/2

27. Cable set

28. Electric connection

Use this kit when a hydraulic lock has not yet been installed on the machine or OilQuick's requirements

for hydraulic locking has not been met (see section 3).

1.4 Attachment frame for hydraulic tools

15. Attachment frame

16. Coupling ramp

17. Male connector

18. Front pin

19. Rear pin

The attachment frames are available in various models for different applications, but the function is the same

as for the basic model in each case. For further details, please contact your nearest OilQuick dealer.

1.5 V-90 electric coupling (option)

20. Contact socket

21. Contact plug

The contact elements are 10 pin.

1.6 1/2" electric coupling (option)

22. Contact socket

23. Contact plug

The contact elements are 10 pin.

Version 1.1 10 2011-06-28

2. Quick coupler functionality

The quick coupler consists of a basic coupler part (1) with the H-cylinder (2) and various accessories

mounted on it. It is attached to the excavator arm and linkage. The H-cylinder (2) and locking plungers (3) are

moved backwards and forwards (4) when oil is supplied to the H-cylinder. When the H-cylinder is located at

the front position (4:1), the locking plungers are not visible and an attachment can be connected or discon-

nected. When the H-cylinder is located at the rear position (4:2), the locking plungers are visible and an at-

tachment

frame can be connected to the coupler.

The hydraulic quick couplers are located in the middle of the H-cylinder between the locking plungers.

Models OQ 70/55 and OQ 80 can be fitted with two 1/2", two 3/4" and two 1" quick couplings.

A dirt guard (5) prevents the quick couplers from becoming dirty. It is opened automatically when the

H-cylinder is at the front position (4:1) and closed automatically at the H-cylinder's rear position (4:2).

The system installed on the excavator for the hydraulic quick coupler supplies oil to the H-cylinder (2).

The operator only has to take a look at the indicator rod (6) to check the H-cylinder's position.

When the indicator rod (6) is visible, the H-cylinder (2) is at its front position and the quick coupler is

unlocked. In this case an alarm sounds and a warning light comes on in the cab.

When the indicator rod (6) is not visible, the quick coupler is closed or locked with an attachment frame.

In this case there is no acoustic signal and the warning light does not come on.

When a hydraulic tool (7) is coupled, the hydraulic quick couplers are connected and the attachment is

mechanically locked.

6 6

4:1

4:2

Version 1.1 11 2011-06-28

3. H-cylinder –function and requirements

The H-cylinder is the key component in the quick coupler.

When working with a hydraulic attachment, the H-cylinder must ensure that the tool is securely attached and

the hydraulic couplings are properly connected.

The hydraulic circuit diagram for the H-cylinder is shown below.

1. Locking cylinder

2. Pilot-controlled check valves

3. Pressure controller

4. Control valve for the

excavator's quick coupler system

5. Hydraulic pump

6. Hydraulic tank

In today's excavators, both the pressure and the oil flow from the machine's hydraulic pump (5) change in

relation to the excavator load. Unlike many other systems, the OilQuick quick coupler system operates at the

excavator's maximum working pressure. This is necessary to ensure that the coupler part is securely locked

to the attachment frame on the tool with no play. In addition, the H-cylinder guarantees that the quick

couplers are connected properly. When the tool is attached, the pressure on the positive side of the cylinders

(1) builds up to the maximum level for the machine.

If the machine pressure changes, the two pilot-controlled check valves (2) ensure that the pressure in the

cylinders (1) remains constant. Whenever the pump pressure (5) rises, oil is supplied to the cylinders (1).

If the pressure in the cylinders (1) exceeds 45 MPa, the control valves (3) open on the tank side (6) and

reduce the pressure.

When the quick coupler unlocks for disconnecting the attachment, the control valve (4) is operated.

In this case, the H-cylinder's negative side is pressurized, the pilot-controlled check valves (2) open and the

H-cylinder releases the lock. If oil supply to the H-cylinder is stopped (e.g in case of hose rupture), it is pre-

vented to be opened as the pilot operated check valves (2) ensure that existing oil can not leave the

H-cylinder without pressure on the negative side.

The H-cylinder in the OilQuick quick

coupler system must:

 be directly connected to the pump

 have an open return line to the tank

 lock at the maximum pressure for

the excavator's hydraulic system

H-cylinder

Version 1.1 12 2011-06-28

1 2 3 4 5 6

4. Technical data

4.1 General data

 The quick couplers design follows S-standard for attachment frames.

 Hydraulic oil: class HM, HV to CETOP RP 91 H in viscosity grades: ISO VG 32, 46 and 68.

 Oil temperature: -30°C to +80°C.

 Ambient temperature: -25°C to +55°C.

4.2 Quick coupler QO 70/55 OQ 80

 Max. output torque kNm (M) 450 700

 Bucket radius mm (L1) 1550 1850

 Force at bucket edge kN (F) 290 380

M (kNm) = F (kN) x L1(m)

 Width (mm) 550 590

 Weight (approx, kg) 230 320

(see identification plate, depends on excavator)

Quick coupler with 2 parallel hydraulic cylinders

 Max. working pressure (MPa) 35 35

 Load-bearing hose break valves yes yes

 Pressure control valves yes yes

 Piston rod diameter (mm) 55/30 55/30

 Stroke (mm) 75 75

 Total closing force at 100 bar (kN) 47.5 47.5

 Leak-free quick couplers made of steel, OilQuick

 Coupling sizes 1/2” 3/4” 1”

 Oil flow at 0.3 MPa pressure loss (l/min) 70 140 250

 Max. continuous working pressure (MPa) 35 35 35

 No. of couplings

 OQ 70/55 2 2 2

 OQ 80 2 2

 V-90 electric coupling yes yes

 1/2" electric coupling yes yes

Quick coupling location

The quick couplers must be visible from the cab.

Couplings 1 and 6: 1/2"

Couplings 2 and 5: 3/4"

Couplings 3 and 4: 1"

If the excavator is fitted with a 1/2" electric coupling, it replaces hydraulic coupling no. 1.

The couplings fitted may vary and depend on the excavator's hydraulic system and what attachments

are to be used.

For further details, please contact your nearest OilQuick dealer.

Version 1.1 13 2011-06-28

4.3.1 Attachment frame for mechanical tools without coupling ramp

OQ 70/55 OQ 80

 Inside width (mm) 550 590

 Pin distance (mm) 600 670

 Pin diameter (mm) 70 80

 Weight (kg) 90 160

OilQuick attachment frames for mechanical tools follow S-standard and can also be used together with other

quick couplers which follow the same S-standard (N.B This operating manual is only valid for OilQuick quick

couplers).

4.3.2 Attachment frame for hydraulic tools with coupling ramp

OQ 70/55 OQ 80

 Inside width (mm) 550 590

 Pin distance (mm) 600 670

 Pin diameter (mm) 70 80

 Weight (kg) 100 170

4.3.3 Hydraulic tool adapter plate with coupling ramp

OQ 70/55 OQ 80

 Inside width (mm) 550 590

 Pin distance (mm) 600 670

 Pin diameter (mm) 70 80

 Weight (kg) 325 465

4.3.4 Hydraulic tool special adapter with coupling ramp

OQ 70/55 OQ 80

 Inside width (mm) 550 590

 Pin distance (mm) 600 670

 Pin diameter (mm) 70 80

 Weight (kg) See identification plate on adapter.

The attachment frames and adapter plates must be installed following the separate instructions

supplied.

If you have any questions, please do not hesitate to contact your OilQuick dealer.

Version 1.1 14 2011-06-28

5. Quick coupler installation

When installing the OilQuick quick coupler system, the following

requirements must be met:

 The coupler part design must be suitable for the excavator's

arm, linkage and geometry.

 The bolts connecting the excavator arm and linkage must be

appropriate and mounted securely.

 The pressure side of the hydraulic lock must be directly

connected to the pump at the excavator's maximum working

pressure.

 There must be a free return line to the tank on the return

side of the hydraulic lock.

 Components of an adequately high or higher pressure class

than the machine's working pressure must be installed for the

hydraulic system.

 In addition, the excavator manufacturer's instructions for

mounting quick couplers must be followed.

The quick coupler is delivered in transport packaging to the place

where it will be installed. Do not open this packaging until starting to

mount the quick coupler on the excavator. The packaging protects

the contents from the weather, prevents it from getting dirty and

also makes transport on site easier. When mounting the quick

coupler on the excavator, proceed with caution. Failure to do so

when handling the large, heavy parts may lead to accidents.

When working on the hydraulic system, observe the following:

 Take care of the environment and collect any oil that has spilled.

 Wear gloves. Hydraulic oil can cause allergic reactions if you are exposed to it for longer periods.

 Wear goggles to protect yourself from oil splashes.

 In the hydraulic system, lines, couplings and connections may be under high pressure.

 When working on the hydraulic system, always ensure cleanliness. Contamination in the system may

cause malfunctions.

After installation, carry out the following steps:

 Check the hydraulic pressure on the lock side of the H-cylinder (must be the excavator's maximum

pressure).

 Check the hydraulic pressure on the open side of the H-cylinder (must be near zero).

 Inspect daily (see section 13.1)

Mechanic responsible:

Signature:

Date and place:

1. Tilt cylinder

2. Screw

3. Mounting bolt

4. Shims

5. Quick coupler

6. Hydraulic lock connection

7. Excavator arm

8. Linkage

CAUTION!

When installing the quick coupler, think of the risk of injury.

Version 1.1 15 2011-06-28

Hoses with guide block mounted on

top of the arm.

6. Hydraulic system installation

The attachments are connected to the excavator's hydraulic system with hoses between the quick couplings

on the coupler and the connections on the excavator arm. The hoses should be routed as illustrated below,

but there can be variations depending on the excavator model and type of installation.

When locating the hoses on the arm, ensure that the bend radius is large enough and that they do not rub or

twist.

First just try placing the hose holders and check the length of the hoses. It is important for you to check the

hose routing when the linkage is at both end positions (see illustrations below).

Hose holders are available in various designs for different installation configurations. Our nearest OilQuick

dealer will be happy to help you select a suitable product.

We recommend you use a guide block for connecting the H-cylinder hoses for the hydraulic lock.

This guide block is a practical installation aid, as it enables the hydraulic hoses to be routed behind the

linkage. It has ports for measuring the locking pressure on the H-cylinder.

The hose length depends on the excavator and type of installation.

Hose holder

Guide block with ports for

measuring the pressure on

the H-cylinder.

Hose position when the tilt

cylinders are moved right in

Hose position when the tilt

cylinders are moved right out

Hose position when the tilt

cylinders are in the middle

Version 1.1 16 2011-06-28

7. Coupling an attachment

In the descriptions regarding handling of the quick coupler, we have assumed that an OilQuick locking

hydraulic kit is installed. If this is not the case, proceed as described in your excavator manual when using the

quick coupler.

Procedure for coupling an attachment:

 Make sure that everyone is clear of the excavator's

working area.

 Open the quick coupler by pressing the lock switch.

The warning light comes on and the alarm sounds.

 Move the tilt cylinder right out, enabling pressure to

build up and the H-cylinder to open.

 Make sure that the indicator is visible (1).

 Make sure that the locking plungers are retracted (2).

 Make sure that the quick coupler and the attachment frame on the tool to be connected are aligned.

Right Wrong

The quick coupler system may only be operated by people who have read the manual and follow

the instructions it contains.

When connecting or disconnecting, changing and setting down attachments, no one should be in

the excavator's working area. During the coupling procedure, attachments may accidentally

become detached or topple over and cause injury.

Lock function

The warning light on the

lock switch is on and an

alarm sounds

In the descriptions regarding handling of the quick coupler, we have assumed that an OilQuick

locking hydraulic kit is installed. If this is not the case, please refer to your excavator manual.

N.B! OilQuick quick couplers can only be coupled to an attachment with an OQ–or

S-attachment frame of the same size/model.

Version 1.1 17 2011-06-28

 Move the tilt cylinder in until the quick coupler is at an angle of 30-45 degrees to the attachment frame

on the tool (see illustration below).

 Hook the fingers at the front of the quick coupler onto the front attachment frame pin.

 Raise the attachment from the ground until it hangs freely.

 Move the tilt cylinder out, lowering the rear part of the quick coupler to the rear pin on the attachment.

 Disable the lock switch for the quick coupler. The light and the alarm both go off.

 Move the tilt cylinder to its end position, enabling pressure to build up and the H-cylinder to lock the

attachment. At the same time any hydraulic and electric couplings in use are connected.

 Make sure that the indicator rod is NOT visible (3).

 Make sure that the locking plungers are located under the rear pin on the attachment frame (4).

Right Wrong

7.1 Checking hydraulic tools

 Try using a hydraulic function on the attach-

ment. If it works properly, the connection is

correct.

 Finished.

7.2 Checking mechanical tools without

hydraulic system

 Carry out the lock test as described in section 8.

 Finished.

ca 30 cm

30°-45°

You must always check that the attachment

is locked as described in 7.1 or 7.2.

If in doubt, disconnect the attachment and

find the cause.

Popular Excavator manuals by other brands

Hitachi

Hitachi EX1200-7 Parts and service manual

Takeuchi

Takeuchi TB215R Operator's manual

RUD

RUD VABH-B User instructions

Kubota

Kubota KX057-4 Operator's manual

Hyundai

Hyundai R480-9 Parts and service manual

jcb

jcb JS130 Service manual

Komatsu

Komatsu PC800-8 LOADING SHOVEL Operation & maintenance manual

Komatsu

Komatsu PC360LC-11 Shop Manual

Yanmar

Yanmar SV26 USER OPERATION AND MAINTENANCE MANUAL

Komatsu

Komatsu PC450LC-8 Operation & maintenance manual

Hitachi

Hitachi Zaxis 200LC Operator's manual

Case

Case CX350D Service manual

Hydraram

Hydraram HFP Series Operation and maintenance manual

CRAWLER

CRAWLER CX130B Service manual

Galeo

Galeo PC16R-2 Operation & maintenance manual

Kobelco

Kobelco SK135SR-7 operating manual

Komatsu

Komatsu PC750-7 BACKHOE brochure

Hitachi

Hitachi ZAXIS 120-6 class Operator's manual

OilQuick OQ 70/55 User manual

Popular Excavator manuals by other brands