This document provides an operations manual for a JBA Multi-Coupler system. It includes sections on safety instructions, installation, maintenance, and parts lists. The manual emphasizes safe and proper use of the equipment according to standards and guidelines.

1. OPERATIONS MANUAL
JBA MULTI-COUPLER

3. CONTENTS PAGE
Customer acceptance and warranty registration__________________________________ 2
To the owner_______________________________________________________________ 3
Safety instructions__________________________________________________________ 4
Introduction_______________________________________________________________ 5
Standards_ ________________________________________________________________ 6
Qualification of operating personal____________________________________________ 7
Installation of multi-coupler_ _______________________________________________8-14
Circuit diagram____________________________________________________________ 15
Hydraulic installation_______________________________________________________ 16
Electrical installation_ ______________________________________________________ 17
Maintenance______________________________________________________________ 18
Maintenance and repair log__________________________________________________ 19
Parts_ ___________________________________________________________________ 20
Parts List_______________________________________________________________21-22

4. CUSTOMER ACCEPTANCE AND WARRANTY REGISTRATION
Upon delivery of your JBA Multi-Coupler, please complete and return this form
immediately to your JBA Multi-Coupler Distributor.
DATE OF DELIVERY: __________________________________________________________
SERIAL NUMBER: _ ___________________________________________________________
I confirm that the operator of the relevant excavator has read and understands the
Operating Instructions and Warranty terms, which relate to the JBA Multi-Coupler.
The Operator understands that he/she is responsible for upstanding all safety and
operation features of the JBA Multi-Coupler.
NAME: _____________________________________________________________________
POSITlON: __________________________________________________________________
COMPANY: _________________________________________________________________
SIGNATURE: _ _______________________________________________________________
THE PURCHASER SHALL FOLLOW:
The recommended installation, testing and maintenance and operating procedures.
Comply with Safety and Training guidelines for use of equipment. (not totally exclusive).
Keep accurate maintenance, operation, malfunction and repair log of equipment.
Ensure that the equipment is used for the purpose it was intended for.
The Purchaser is to sign this declaration with the understanding of the above
and return this copy (also retaining a copy) to:
AUCKLAND
49 McLaughlins Road, Wiri 2104, Auckland, New Zealand - PO Box 98979, Manukau City 2241
Phone: 0064 9 278 4863 - Phone: 0800 527 2537 - Fax: 0064 9 278 4864 - Email: sales@jbattachments.com
BRISBANE
82 Chetwynd Street, Loganholme QLD 4129, Australia - Phone: 0061 7 380 60344 - Fax: 0061 7 380 60295
Email: brisbane@jbsales.com.au
MELBOURNE
Unit 1, 15 Commercial Drive, Dandenong, Melbourne Vic 3175, Australia - Phone: 0061 3 9706 5239
Fax: 0061 3 9706 5213 - Email: melbourne@jbsales.com.au
2

5. TO THE OWNER
As the new owner and/or operator of the JBA Multi-Coupler we would recommend that
you take the time to read this operator guide carefully before commencing work.
The JBA Multi-Coupler brings major advancements in safety to the construction
attachment industry. It demonstrates JBs ongoing commitment to the development of
safe and productive products that not only meet but surpass our clients requirements.
FOLLOW THE SAFETY INSTRUCTIONS
• carefully read all the safety information contained in this manual.
• make sure all warning signs are legible
• immediately replace any signs which are missing or damaged
• before starting work make sure you are familiar with the equipment, and where
necessary with the machine and its control devices
INFORMATION FOR THE USER:
The user of the JBA Multi-Coupler system is obliged to ensure that the equipment
is always in safe working order in accordance with accident prevention regulations,
Occupational Safety and Health or any other official instructions.
WARRANTY REGULATION:
JB Attachments Ltd provides guarantees according to its sales and delivery conditions,
extended to twelve months from delivery.
The extended guarantee assumes proper operation and use as intended but will be
nullified as a result of:
• Repairs or other intervention not undertaken by persons authorised by
JB Attachments Ltd.
• With use of accessories or replacement parts not approved by
JB Attachments Ltd or which are not original replacement parts
supplied by JB Attachments Ltd.
After the warranty period has expired, we further recommend use of original replacement
parts and our replacement parts approved by JB Attachments Ltd.
We thank you for your choice and look forward to being of service to you now and in the
future.
PLEASE COMPLETE THE CUSTOMER ACCEPTANCE AND WARRANTY REGISTRATION
FORM LOCATED IN THIS MANUAL - FAILURE TO REGISTER MAY INVALIDATE YOUR
WARRANTY CLAIM.
3

6. SAFETY INSTRUCTIONS
This safety alert symbol indicates important safety messages in this manual.
! When you see this symbol carefully read the message that follows and be
alerted to the possibility of personal injury or death.
WARNING
Improper operation of this machine can cause injury or death. Before using this machine
make certain that every operator:
• is instructed in safe and proper use of the attachment
• reads and understands the manual pertaining to the attachment
• reads and understands all safety decals and tags on the machine
• clears the area of all other persons
• learns and practises safe use of attachment controls in a safe, clear area
before operating this machine on a job site
It is your responsibility to observe pertinent laws and regulations and follow
JB Attachments Ltd instructions on operation and maintenance.
4

7. CAB DECAL
The JBA Multi-Coupler operation instructions to be fitted inside the cab in clear view of
the operator.
Decal for inside cab. Part # JBAUTO1467
5

8. COUPLER IDENTIFICATION LABEL
Each JBA Multi-Coupler will have an identification label fitted which will also have the SWL
and data information. There will also be a serial number stamped into the steel body with
SWL stamp near the lift eye.
All cylinders will have an identification number and serial number stamped onto the
cylinder. Please use this identification number when ordering parts to confirm the correct
repair kits.
6

9. INTRODUCTION
This manual contains very important information about the installation, connection,
maintenance and safe operation of the JBA Multi-Coupler. JB Attachments Ltd takes great
care and pride in the manufacturing standards applied to this equipment and to ensure
satisfactory and safe performance. You can also help in this positive safety approach, by
ensuring that all persons who may be involved with the fitting or operating of the JBA
Multi-Coupler read and understand these BASIC SAFETY FEATURES AND INSTRUCTIONS
JB Attachments Limited reserves the right of modification as a result of further technical
developments with regard to the information and illustrations cited in this manual.
• JB Attachments Ltd has sole copyright of this manual.
• The manual is intended solely for the use of the JBA Multi-Coupler System.
• No part of this manual may be reprinted, translated or reproduced by any means
without prior written permission of JB Attachments Ltd.
• Utilisation for the purposes of competition is forbidden.
• The JBA Multi-Couplers are designed for safe and dependable service if installed,
maintained and operated correctly.
We request that time be devoted to the study of installation and maintenance
requirements. Also in the correct operating use of the advised safety procedures.
IMPORTANT NOTE:
To comply with Occupational Safety and Health requirements a record must be made of
all repairs, adjustments and regular maintenance events involving your JBA Multi-Coupler.
A log book has been placed at the back of this manual for that purpose and
your convenience.
7

10. STANDARDS OF DESIGN, INSTALLATION,
MAINTENANCE & OPERATION
Standards and OSH Guidelines
The standards and OSH Guidelines for the JBA Multi-Coupler are as follows:
• AS4772 Standards Australia. Australian Standard for - Earthmoving Machinery -
Quick-hitches (couplers) for excavators and backhoe loaders AS4772 section C12.1.4
• AS 1418 5 1995 Cranes (Including hoists and winches) Part 5: Mobile vehicle
loading cranes.
• European Standard EN474-5; Section 4.1.9.1/2 and 3.
• Electrical Interlocking for safety in Industrial Processes.
• Standard Operating Guidelines for Plant and Machinery.
We request that time be devoted to the study of installation and maintenance
requirements. Also in the correct operating use of the advised safety procedures.
Associated standards
• AS 2954 Earthmoving Equipment - Rated Loads and Volumetric ratings
• AS 2954 Earthmoving Equipment - Tests and Measurements
• AS 2954 Earthmoving Equipment - Instrumentation and Control
• AS 2954 Earthmoving Equipment - Operation and Maintenance
PLEASE NOTE
• AS 2954 Earthmoving Equipment - Safety
• Excavator and attachments must be suitable or converted for mounting the
JBA Multi-Coupler (in agreement with JB Attachments Ltd).
• The crowd and breakout forces specified by the excavator manufacturer must
not be exceeded.
• The JBA Multi-Coupler must not be used for impact work (only with attachments
specified for this).
• Load hook rating must never be exceeded.
• Adherence to the specifications in this manual is part of the intended use.
• All JBA Multi-Coupler models have specific safety features, see those that relate
to your purchase on Page 9.
8

11. QUALIFICATION OF OPERATING PERSONNEL
Only the following persons may work independently with the JBA Multi-Coupler systems
and in general earthmoving machinery, those who:
• Are over 18 years of age.
• Are physically and intellectually suitable.
• Have been instructed in the general regulations concerning operational safety and
accident prevention in particular.
• Have been instructed in assembly, operation and maintenance of the earthmoving
machinery and how to use the JB Multi-Coupling system, who have understood
these operating instructions and have proven to the contractor they are capable of
operating such machinery.
Ensure that only appointed personnel work with the multi-coupler system.
Only give instructions to competent, skilled personnel.
NOTE: FOR JB MULTI-COUPLING SYSTEMS SUPPLIED TO OR MANUFACTURED
IN COUNTRIES OTHER THAN NEW ZEALAND, THE RULES FOR PREVENTION OF
ACCIDENTS AND SAFETY REGULATIONS FOR THE RESPECTIVE COUNTRY MUST BE
STRICTLY ADHERED TO.
INSTALLATION KIT
1 x JBA Multi-Coupler
1 x Operation switch
1 x Warning buzzer
1 x Hydraulic hose kit and fittings
1 x Solenoid valve (12 or 24 volt)
6 x Clamps (weld on type)
1 x Cable ties (packet)
Some fittings for connection to main pump test port and
! adapter for return oil to tank will not be supplied due to the
number of different types of connections.
9

12. INSTALLATION: JBA Multi-Coupler
STEP 1
FITTING HOSES TO CYLINDER
Remove plugs from cylinder
Check surface is clean prior to
connecting banjo fitting on hoses
Banjo bolt Part# JB_Auto-c-cyl-015
Banjo washer Part# JB_Auto-c-cyl-016
Banjo Part# JB_Auto-c-cyl-022
10

13. INSTALLATION: JBA Multi-Coupler
STEP 2
Align JBA Multi-Coupler
to the dipper arm fit
oring seals and shims
where required.
STEP 3
Install OEM harden pins
to attach JBA Multi-
Coupler to dipper arm
on excavator and fit
locking bolts and nuts to
secure pins.
Check pins
! are originaL
OEM PINS.
11

14. INSTALLATION: JBA Multi-Coupler
STEP 4 MANIFOLD POSITION
Fitting manifold block on
dipper arm and whip hoses
to the coupler (follow step 5)
Manifold block
Whip hoses
OEM pins
Whip hoses in this position
will give the whip hoses a
natural spring movement
to keep hose snug and
neat fitting close to dipper
arm for protection
WARNING!! Prior to WELDING Disconnect
! battery and any electrical or computer
connections - if not certain contact machine
supplier before welding.
12

15. INSTALLATION: JBA Multi-Coupler
STEP 5 FITTING MANIFOLD BLOCK & WHIP HOSES
With coupler fully crowded in towards the cab, position the manifold block
approx 240mm (Fig.A) from the dipper bucket pin center to manifold block on
the dipper.
MULTIPLE CONNECTOR
Note: this distance will
! vary to suit different
machine makes and models.
Fig. A
Remove paint, tack weld manifold
block on either end as in (Fig. B)
Whip hose position approx
dimensions (Fig. C)
Fig. B
Note: Whip hose can have spiralflex hose protection
! or spiral steel fitted. Keep in mind natural hose has
better flexibility.
13

16. INSTALLATION: JBA Multi-Coupler
STEP 5 (continued) FITTING WHIP HOSES
100-130mm (check hose is not
too tight at hose end)
Manifold block
Whip hose
25-50mm distance from
dipper arm
Coupler cylinder adjust banjo
connection on cylinder can be
directed at 10° angle facing
outwards in a V angle to direct
hoses away from the crowd
linkage on the machine
Fig. C
Test whip hose position in the opposite position, the coupler crowd fully out in
the (dump) position. Check clearance between the crowd cylinder and manifold
block has clearance. Hose should be in neat tidy position that will not cause
damage to whip hoses.
If not in correct position damage will occur, options are move the hose to a
suitable position where the hoses are fitting freely or reposition manifold block or
mark lengthen whip hose. Repeat the same procedure and check until the hoses
are in a neat and tidy position and follow (Fig, A, B, C)
14

17. INSTALLATION: JBA Multi-Coupler
STEP 5 (continued) FITTING WHIP HOSES
Fully weld block on outer sides RH/LH
Only weld parallel to dipper on each end
of manifold block
STEP 6
optional using steel tube or hose
From the manifold block install hoses or tube up the dipper arm at the top clamp
hose/tube to outer side allowing clearance when crowd cylinder clearance.
15

18. INSTALLATION: JBA Multi-Coupler
STEP 7
Follow original pipe/hose
on main boom where you
can feed in between and
existing clamps.
Optional outer hose
sox can be used for
extra protection.
Cable tie every 300-400mm to existing
hose pipe work.
Position where appropriate. This may vary
with different machine.
NOTE: CHECK hoses
! are clean prior to
connecting.
16

19. INSTALLATION: JBA Multi-Coupler
STEP 8
INSTALLATION solenoid value
Check machine voltage.
! 12/24. check solenoid
is correct.
Mount the solenoid valve in convenient
position near the main hydraulic pumps.
MAINS PRESSURE SUPPLY TO SOLENOID VALVE
Locate the main test port on the Excavators main hydraulic pump. Fit adapter or
Tee adapter connect main hydraulic pump to the “P” port on the solenoid valve,
(“P” is marked on valve for pressure in).
check this by fitting a pressure gauge into the pump
!
port operate machine to confirm port IS fitting.
NOTE: Connection on crowd operation - as machine has
two pumps in series, check operation prior to fitting.
17

20. INSTALLATION: JBA Multi-Coupler
STEP 9
return LINE FROM SOLENOID VALVE to hydraulic tank
Solenoid valve marked “T” Port, is returned to hydraulic tank.
Connect hose from solenoid valve to accessable, convenient position on the main
hydraulic tank (NOTE: fitting is not supplied in the installation kit).
• Tee Connection fitted
for return oil from the
solenoid marked “T”
Hose connected to
hydraulic tank
(Tee connection fitting
can be used on existing
connection on tank
if required, if spare
connections are not
available)
NOTE: The JBA Multi-Coupler solenoid valve has a
! pressure reducer FITTED. This will decreAse pressure
from the solenoid valve to 2800-3000 PSI. This is sufficient
pressure to the cylinder and will protect the cylinder
from spike pressures on the excavators. ALso working at
this pressure will give more flexibility on whip hoses to
increase the life of hose to coupler.
The JB Quick coupler has been operating this system on
all couplers for more than 12 years.
18

21. CIRCUIT DIAGRAM
CIRCUIT DIAGRAM FOR DOUBLE ACTING INSTALLATION
19

22. HYDRAULIC INSTALLATION
20

23. ELECTRICAL INSTALLATION
Depending on electrical solenoid, valve supplied wiring is as follows:
A: Coil with two wires coming from it should be wired with one to earth and the
other to the power source.
B: Coil has three points to wire to. You can use two of theses terminals, which are
marked 1 and 2.
NOTE
1. Wire 1 to earth on body of machine, wire 2 to switch which is mounted in the
cab (terminal 3 not used).
2. Further information can be found in section 9.
! safety warning
INSTALLATION KIT CHECKLIST
Switch
Buzzer Alarm
Solenoid Valve Install Hitch Switch inside cab
21

24. operation and attaching
1 multi-Coupler operation
BEFORE ATTACHING ATTACHMENTS
1. Activate JBA Multi-Coupler switch
inside operators cab to ON position.
2. Crowd fully in towards cab to
pressurise hydraulics.
3. Rear slide hook will be fully out REAR SLIDE FRONT JAW
which will release the front jaw lock. HOOK LOCK
FRONT
REAR PIN PIN
2 Attachment operation
PICK UP
1. Line up front jaw of the JBA Multi-Coupler
to the attachments front pin. Curl into the
front pin on the attachment and continue
until the open jaw on the coupler fits into
the front pin on the attachment.
2. Switch to OFF position, buzzer will sound.
Curl/crowd the coupler towards the cab.
The rear slide hook will slide forward to
engage the front jaw lock on the pin.
3. With the attachment crowded towards the
cab, activate the switch to ON. The buzzer
will stop. The rear slide hook will lock on
the rear pin.
4. The front jaw lock will be fully closed on the
front pin. Proceed to connection test.
22

25. operation and attaching
!
3 Connection test important
WARNING! Check all attachments are fitting correctly. Safety lock jaw is designed to
work in closed position to suit all weight breaks to machine models makers of OEM
design pins centers. If the safety lock is not closed when attached to any attachment
DO NOT USE THIS ATTACHMENT. Advise manufacturer of attachment this it is not
fitting and arrange modification before it can be used.
To ensure the Multi Coupler has engaged surely to
pins on attachment:
Visual check Front Auto Jaw Lock is engaged on
front pin.
Test apply pressure to bucket/attachment by
rotating against the ground and away from
machine before operating.
Do not proceed to work unless Jaw Lock is in
closed
position on
the front pin.
If Jaw Lock
on front pin
is open
DO NOT
OPERATE
MACHINE. Safety Lock Jaw in closed position
LIFTING WITH THE JBA Multi-Coupler
WARNING! Always use the correct rated shackle and lifting equipment when lifting.
Never use worn, damaged, undersized or under rated equipment.
The coupler has an integrated certified lifting eye. The safe working load of which
can be found stamped into the coupler frame (next to the lifting eye). Do not lift
over the SWL limit of the coupler. The lifting capability of the machine should also be
checked prior to lifting with the coupler in a vertical position.
23

26. operation and attaching
Testing hydraulic installation
and electoral system
Check all hose and adapters fitted are tight. Check that hoses are not rubbing and
all cable ties are secured. Ensure all bolts and nuts are tight
Ensure electrical insulation is in correct fuse, earth, switch is surer and alarm
is working
NOTE ! Check alarm only works when coupler is in the release operation
Make sure all warning decals are fitted
Pressure test hydraulics
Start machine crowd fully in hold crowd lever over and switch coupler switch
on and off, Slide jaw will move to either release or attach position and hold lever
over will pressurize the hydraulics hose and fittings do this in both directions and
visually check all connections for leaks and operation
Grease all grease points on the coupler (Fig. D)
Move slide jaw with hydraulics in and out after greasing
Grease safety lock pin Rear slide hook Grease
24

27. MAINTENANCE
general maintenance
WARNING - Maintenance Work
! Maintenance work must be completed by competent personnel or ask JBs
to assist.
DANGER - Hydraulic Fluid
! Never use your hands to search for hydraulic fluid leaks, use a piece of
paper or cardboard. Escaping fluid under pressure can be invisible and can
penetrate the skin and cause serious injury. If affected, see a doctor
straight away.
! WARNING - Coupler Condition
A defective coupler could injure you or others. Do not operate a coupler that
is defective.
! WARNING - Hose Arrangement
Ensure that the hoses are not to slack and do not come into contact with the
spring mechanisms as this will prevent the safe operation of the blocking bar.
Maintenance and Service
To ensure that your quick coupler works safely and to maximum efficiency it
is imperative that it is properly maintained in accordance with the following
service guidelines.
Replacement Parts
We recommend that you fit genuine replacement parts. You will need to
quote the coupler serial number stamped on the coupler data plate.
Daily checks
1. Thoroughly clean the coupler.
2. Check the coupler for cracked, bent or broken components, distressed welds,
missing parts and oil leaks. Replace broken parts if required.
3. Check the security of the mounting pins, locking bolts and nuts.
4. Check the condition of the hydraulic hoses, fittings and hydraulic system
generally. Replace any that are damaged.
25

28. MAINTENANCE
WEEKLY CHECKS
It is recommended that the following procedures are carried out at least once
per week.
1. Carry out all daily, checks.
2. Lubrication points - Ensure that all grease points are greased regularly (at least
once a week minimum). If damaged, replace and grease. It is important to follow
the lubrication instructions in sequence i to vii so that none of the grease nipples
are overlooked.
I. Release the bucket/attachment. (Refer to the operation instructions- section)
ii. Retract the coupler cylinder. Switch off the engine.
iii. Apply grease, via grease nipple.
iv. Apply grease via nipple B to the hook.
v. Start the engine. Extend the bucket cylinder in order to position the coupler
so the cylinder grease nipples are accessible. Switch off the engine.
overleaf is the maintenance and repair log for the
JBA Multi-Coupler
• It is essential this log is filled in at the time of maintenance or repair to the
multi-coupler.
• In the unfortunate event of an accident this log may be vital evidence as to
compliance with Occupational Safety and Health requirements.
• Work carried out on this JB Muti-Coupler must be by an authorised and
competent person.
26

29. MAINTENANCE AND REPAIR LOG
DATE FAULT / SERVICE DESCRIPTION MAINTENANCE / REPAIR EFFECTED BY WHOM

30. MAINTENANCE
TORQUE SPECIFICATIONS
The torque specifications are as follows:
Check valve 30 lb.ft 40 Nm
B hose connection male (cylinder hose) 15 lb.ft 20 Nm
A hose connection male (cylinder hose) 26 lb.ft 35 Nm
Pressure hose connection female 20 lb.ft 27 Nm
Tank return hose connection female 55 lb.ft 75 Nm
Weld on block 20 lb.ft 27 Nm
Solenoid Valve
A Line filter fitting o BSP M/M Adapter 25 lb.ft 34 Nm
B Line filter fitting 7/16 JIC x 7/16 UNF 15 lb.ft 20 Nm
P Line 9/16 JIC x 9/16 UNF 26 lb.ft 35 Nm
T Line 3/8 BSP M/M Adapter 55 lb.ft 75 Nm
Spool Valve 40.6 lb.ft 54.2 Nm
Check Valve 33.8 lb.ft 40.6 Nm
Electro-magnetic lock nut 5.4 lb.ft 8.1 Nm
Plug 9.3 lb.ft 13 Nm
28

31. PARTS
When ordering, state excavator size, make & Model & Coupler, Serial Number.
29

32. PARTS LIST
30

33. PARTS LIST
31

34. 32

36. AUCKLAND
49 McLaughlins Road, Wiri 2104, Auckland, New Zealand - PO Box 98979, Manukau City 2241
Phone: 0064 9 278 4863 - Phone: 0800 527 2537 - Fax: 0064 9 278 4864 - Email: sales@jbattachments.com
BRISBANE
82 Chetwynd Street, Loganholme QLD 4129, Australia - Phone: 0061 7 380 60344 - Fax: 0061 7 380 60295
Email: brisbane@jbsales.com.au
MELBOURNE
Unit 1, 15 Commercial Drive, Dandenong, Melbourne Vic 3175, Australia - Phone: 0061 3 9706 5239
Fax: 0061 3 9706 5213 - Email: melbourne@jbsales.com.au
www.jbattachments.com