This document is a service manual for LB424 and LB434 square balers. It provides technical information on the balers' power take-off drive shaft systems, including exploded views of components, detailed views, specifications, how the systems work, troubleshooting information, and service instructions. The manual is divided into sections covering different baler systems and functions.

1. Part number 48123752
1/2
LB424 XL
LB434 XL
Square baler
SERVICE MANUAL
LB424 XL
LB434 XL
Square baler
Part number 48123752
English
April 2017
© 2017 CNH Industrial Belgium N.V. All Rights Reserved.
SERVICEMANUAL

2. SERVICE MANUAL
LB424R XL Rotor Cutter
LB424S XL Standard
LB434R XL Rotor Cutter
LB434S XL Standard
48123752 21/03/2017
EN

3. Contents
INTRODUCTION
Power Take-Off (PTO)................................................................. 31
[31.201] Power Take-Off (PTO) drive shaft.................................................. 31.1
[31.205] Flywheel............................................................................ 31.2
[31.220] Gearbox ............................................................................ 31.3
[31.225] Clutches............................................................................ 31.4
Brakes and controls .................................................................... 33
[33.202] Hydraulic service brakes ........................................................... 33.1
[33.300] Pneumatic service brakes.......................................................... 33.2
Hydraulic systems....................................................................... 35
[35.540] Bale density circuit ................................................................. 35.1
[35.568] Knife positioning circuit............................................................. 35.2
[35.570] Bale eject circuit.................................................................... 35.3
[35.580] Rear bale chute positioning system................................................ 35.4
[35.585] Tandem auto-steer lock circuit ..................................................... 35.5
Electrical systems....................................................................... 55
[55.000] Electrical system ................................................................... 55.1
[55.100] Harnesses and connectors......................................................... 55.2
[55.629] Pressing/Bale formation electrical control.......................................... 55.3
[55.640] Electronic modules ................................................................. 55.4
[55.633] Baler feeding control ............................................................... 55.5
[55.629] Pressing/Bale formation electrical control.......................................... 55.6
[55.433] Twine and net cutting and tying or wrapping ....................................... 55.7
[55.408] Warning indicators, alarms, and instruments ...................................... 55.8
[55.DTC] FAULT CODES.................................................................... 55.9
Product feeding .......................................................................... 60
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4. [60.220] Pickup .............................................................................. 60.1
[60.260] Rotor ............................................................................... 60.2
[60.230] Precompression.................................................................... 60.3
[60.240] Packer.............................................................................. 60.4
[60.280] Stuffer .............................................................................. 60.5
Pressing - Bale formation............................................................. 62
[62.100] Plunger and connecting rod........................................................ 62.1
Tying/Wrapping/Twisting.............................................................. 68
[68.160] Knotter frame....................................................................... 68.1
[68.100] Knotter drive system ............................................................... 68.2
[68.110] Knotter clutch and brake ........................................................... 68.3
[68.130] Needles ............................................................................ 68.4
[68.120] Knotter trip mechanism ............................................................ 68.5
[68.140] Knotter stack ....................................................................... 68.6
Ejection ..................................................................................... 70
[70.250] Bale chute.......................................................................... 70.1
Lubrication system...................................................................... 71
[71.460] Grease lubrication system ......................................................... 71.1
[71.480] Oiler system........................................................................ 71.2
Platform, cab, bodywork, and decals............................................. 90
[90.105] Machine shields and guards ....................................................... 90.1
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5. INTRODUCTION
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6. INTRODUCTION
Basic instructions - How to use and navigate through this Manual
Large LB series ANZ --- APAC --- MEA --- WE
Technical information
This manual has been produced by a new technical information system. This new system is designed to deliver
technical information electronically through Web delivery (eTim), DVD and in paper manuals. A coding system called
SAP has been developed to link the technical information to other Product Support functions, e.g., Warranty.
Technical information is written to support the maintenance and service of the functions or systems on a customer's
machine. When a customer has a concern on his machine it is usually because a function or system on his machine
is not working at all, is not working efficiently, or is not responding correctly to his commands. When you refer to
the technical information in this manual to resolve that customer's concern, you will find all the information classified
using the SAP coding, according to the functions or systems on that machine. Once you have located the technical
information for that function or system then you will find all the mechanical, electrical or hydraulic devices, compo-
nents, assemblies and sub assemblies for that function or system. You will also find all the types of information that
have been written for that function or system, the technical data (specifications), the functional data (how it works),
the diagnostic data (fault codes and troubleshooting) and the service data (remove, install adjust, etc.).
By integrating SAP coding into technical information, you will be able to search and retrieve just the right piece of
technical information you need to resolve that customer's concern on his machine. This is made possible by attaching
3 categories to each piece of technical information during the authoring process.
The first category is the Location, the second category is the Information Type and the third category is the Product:
• LOCATION - is the component or function on the machine, that the piece of technical information is going to describe
e.g. Fuel tank.
• INFORMATION TYPE - is the piece of technical information that has been written for a particular component or
function on the machine e.g. Capacity would be a type of Technical Data that would describe the amount of fuel
held by the Fuel tank.
• PRODUCT - is the model for which the piece of technical information is written.
Every piece of technical information will have those 3 categories attached to it. You will be able to use any combination
of those categories to find the right piece of technical information you need to resolve that customer's concern on his
machine.
That information could be:
• the description of how to remove the cylinder head
• a table of specifications for a hydraulic pump
• a fault code
• a troubleshooting table
• a special tool
48123752 21/03/2017
3

7. INTRODUCTION
How to use this manual
This manual is divided into Sections. Each Section is then divided into Chapters. Contents pages are included at the
beginning of the manual, then inside every Section and inside every Chapter. An alphabetical Index is included at the
end of a Chapter. Page number references are included for every piece of technical information listed in the Chapter
Contents or Chapter Index.
Each Chapter is divided into four Information types:
• Technical Data (specifications) for all the mechanical, electrical or hydraulic devices, components and, assemblies.
• Functional Data (how it works) for all the mechanical, electrical or hydraulic devices, components and assemblies.
• Diagnostic Data (fault codes, electrical and hydraulic troubleshooting) for all the mechanical, electrical or hydraulic
devices, components and assemblies.
• Service Data (remove disassembly, assemble, install) for all the mechanical, electrical or hydraulic devices, com-
ponents and assemblies.
Sections
Sections are grouped according to the main functions or a systems on the machine. Each Section is identified by a
number 00, 35, 55, etc. The amount of Sections included in the manual will depend on the type and function of the
machine that the manual is written for. Each Section has a Contents page listed in alphabetic/numeric order. This
table illustrates which Sections could be included in a manual for a particular product.
PRODUCT
Tractors
Vehicles with working arms: backhoes,
excavators, skid steers, ….
Combines, forage harvesters, balers, ….
Seeding, planting, floating, spraying
equipment, ….
SECTION Mounted equipment and tools, ….
00 - Maintenance
05 - Machine completion and equipment
10 - Engine
14 - Main gearbox and drive
18 - Clutch
21 - Transmission
23 - Four wheel drive system
25 - Front axle system
27 - Rear axle system
29 - Hydrostatic drive
31 - Implement power take-off
33 - Brakes and controls
35 - Hydraulic systems
36 - Pneumatic system
37 - Hitches, drawbars and implement couplings
39 - Frames and ballasting
41 - Steering
44 - Wheels
46 - Steering clutches
48 - Tracks and track suspension
50 - Cab climate control
55 - Electrical systems
56 - Grape harvester shaking
58 - Attachments/headers
60 - Product feeding
61 - Metering system
62 - Pressing - Bale formation
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4

8. INTRODUCTION
63 - Chemical applicators
64 - Chopping
66 - Threshing
68 - Tying/Wrapping/Twisting
69 - Bale wagons
70 - Ejection
71 - Lubrication system
72 - Separation
73 - Residue handling
74 - Cleaning
75 - Soil preparation/Finishing
76 - Secondary cleaning / Destemmer
77 - Seeding
78 - Spraying
79 - Planting
80 - Crop storage / Unloading
82 - Front loader and bucket
83 - Telescopic single arm
84 - Booms, dippers and buckets
86 - Dozer blade and arm
88 - Accessories
89 - Tools
90 - Platform, cab, bodywork and decals
48123752 21/03/2017
5

9. SERVICE MANUAL
Power Take-Off (PTO)
LB424R XL Rotor Cutter
LB424S XL Standard
LB434R XL Rotor Cutter
LB434S XL Standard
48123752 21/03/2017
31

10. Power Take-Off (PTO) - Power Take-Off (PTO) drive shaft
Power Take-Off (PTO) drive shaft - Exploded view
LB424R XL ANZ --- APAC --- MEA --- WE
LB424S XL ANZ --- APAC --- MEA --- WE
LB434R XL ANZ --- APAC --- MEA --- WE
LB434S XL ANZ --- APAC --- MEA --- WE
1. Retaining ring 13. Guard support (bearing ring)
2. Quick-connect lock (yoke – shaft connection) 14. Guard
3. Yoke 15. Outer tube guard
4. Retaining ring 16. Guard
5. U-joint 17. Inner tube guard
6. Grease fitting 18. Screw
7. Intermediate plate 19. Inner tube
8. Yoke 20. Roll pin 10 x 80
9. Roll pin 10 x 100 21. Yoke
10. Outer tube 22. Yoke
11. Guard 23. Conical bolt
12. Screw
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11. Power Take-Off (PTO) - Power Take-Off (PTO) drive shaft
ZEIL15BB00127GW 1
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12. Power Take-Off (PTO) - Power Take-Off (PTO) drive shaft
Power Take-Off (PTO) drive shaft - Detailed view - Guard - Inner tube
LB424R XL ANZ --- APAC --- MEA --- WE
LB424S XL ANZ --- APAC --- MEA --- WE
LB434R XL ANZ --- APAC --- MEA --- WE
LB434S XL ANZ --- APAC --- MEA --- WE
13. Guard support (bearing ring)
16. Guard
17. Inner tube guard
18. Screw
40. Chain
ZEIL15BB00144FA 1
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13. Power Take-Off (PTO) - Power Take-Off (PTO) drive shaft
Power Take-Off (PTO) drive shaft - Detailed view - Guard - Outer tube
LB424R XL ANZ --- APAC --- MEA --- WE
LB424S XL ANZ --- APAC --- MEA --- WE
LB434R XL ANZ --- APAC --- MEA --- WE
LB434S XL ANZ --- APAC --- MEA --- WE
11. Guard
12. Screw
13. Guard support (bearing ring)
14. Guard
15. Outer tube guard
18. Screw
24. Retaining spring
40. Chain
ZEIL15BB00143FA 1
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14. Power Take-Off (PTO) - Power Take-Off (PTO) drive shaft
Yoke assembly - Exploded view - Yoke - Shaft connection
LB424R XL ANZ --- APAC --- MEA --- WE
LB424S XL ANZ --- APAC --- MEA --- WE
LB434R XL ANZ --- APAC --- MEA --- WE
LB434S XL ANZ --- APAC --- MEA --- WE
1. Retaining ring
2. Collar
3. Yoke
41. Ball
43. Spring
ZEIL15BB00142FZ 1
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15. Power Take-Off (PTO) - Power Take-Off (PTO) drive shaft
Universal joint - Detailed view
LB424R XL ANZ --- APAC --- MEA --- WE
LB424S XL ANZ --- APAC --- MEA --- WE
LB434R XL ANZ --- APAC --- MEA --- WE
LB434S XL ANZ --- APAC --- MEA --- WE
3. Yoke
4. Retaining ring
5. U-joint
6. Grease fitting
8. Yoke
30. Bearing
ZEIL15BB00146FA 1
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16. Power Take-Off (PTO) - Power Take-Off (PTO) drive shaft
Universal joint Constant Velocity (CV) universal joint - Detailed view
LB424R XL ANZ --- APAC --- MEA --- WE
LB424S XL ANZ --- APAC --- MEA --- WE
LB434R XL ANZ --- APAC --- MEA --- WE
LB434S XL ANZ --- APAC --- MEA --- WE
2. Quick-connect lock
3. Yoke
4. Retaining ring
5. U-joint
6. Grease fitting
7. Intermediate plate
8. Yoke
30. Bearing
32. Grease fitting
ZEIL15BB00145FA 1
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17. Power Take-Off (PTO) - Power Take-Off (PTO) drive shaft
Power Take-Off (PTO) drive shaft - Service instruction -
Troubleshooting
LB424R XL ANZ --- APAC --- MEA --- WE
LB424S XL ANZ --- APAC --- MEA --- WE
LB434R XL ANZ --- APAC --- MEA --- WE
LB434S XL ANZ --- APAC --- MEA --- WE
Symptom Possible cause Action
Wear of yoke ears. Excessive working angle. • Reduce working angle.
• Disengage PTO when joint angle
exceeds 45°.
Deformation of yoke ears. Excessive torque peak or shock load. • Avoid overloading and engaging drive
under load.
• Check function of torque limiter.
Cross arms broken. Excessive torque peak or shock load. • Avoid overloading and engaging drive
under load.
• Check function of torque limiter.
Excessive load. Do not exceed the speed or power limits
indicated in the operator’s manual.
Accelerated wear
of cross arms.
Insufficient lubrication. Follow the instructions for use and
maintenance described in the operator’s
manual.
Separation of tele-
scoping tubes.
Excessive extension of drive line. • Avoid excessive extension of drive line.
• Check recommended PTO front and
rear drive shaft lengths, see the
operator’s manual.
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18. Power Take-Off (PTO) - Power Take-Off (PTO) drive shaft
Symptom Possible cause Action
Deformation of
telescoping tubes.
Excessive torque peak or shock load. • Avoid overloading and engaging drive
under load.
• Check function of torque limiter.
• Check that drive line does not come
into contact with tractor or implement
components during movement.
Insufficient lubrication. Follow the instructions for use and
maintenance described in the operator’s
manual.
Accelerated wear of
telescoping tubes.
Insufficient tube overlap. Check recommended PTO front and rear
drive shaft lengths, see the operator’s
manual.
Insufficient lubrication. Follow the instructions for use and
maintenance described in the operator’s
manual.
Accelerated wear
of shield bearing.
Collar for shield not fastened properly. On the mid-ship bearing housing, fasten
the collar from the PTO shield.
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19. Power Take-Off (PTO) - Power Take-Off (PTO) drive shaft
Power Take-Off (PTO) drive shaft - Disassemble - Guards
LB424R XL ANZ --- APAC --- MEA --- WE
LB424S XL ANZ --- APAC --- MEA --- WE
LB434R XL ANZ --- APAC --- MEA --- WE
LB434S XL ANZ --- APAC --- MEA --- WE
Inner side tube
1. Remove the screws (18).
ZEIL15BB00128AA 1
2. Remove the guard (16).
3. Remove the inner tube guard (17).
ZEIL15BB00129AA 2
4. Spread and remove the guard support (13).
ZEIL15BB00130AA 3
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20. Thank you very much for
your reading. Please Click
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21. Power Take-Off (PTO) - Power Take-Off (PTO) drive shaft
Outer side tube
5. Remove the screws (12) radially arranged around the
guard (11).
ZEIL15BB00134AA 4
6. Remove the screws (18) from the outer tube guard (15).
ZEIL15BB00135AA 5
7. Remove the outer tube guard (15).
8. Remove the guards (11) and (14).
ZEIL15BB00136AA 6
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22. Power Take-Off (PTO) - Power Take-Off (PTO) drive shaft
9. Disengage the retaining spring (24) from one of the two
connection points on the guard supports (13).
ZEIL15BB00139AZ 7
10. Spread and remove the guard supports (13) from the
grooves.
ZEIL15BB00137AA 8
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23. Power Take-Off (PTO) - Power Take-Off (PTO) drive shaft
Power Take-Off (PTO) drive shaft - Assemble - Guards
LB424R XL ANZ --- APAC --- MEA --- WE
LB424S XL ANZ --- APAC --- MEA --- WE
LB434R XL ANZ --- APAC --- MEA --- WE
LB434S XL ANZ --- APAC --- MEA --- WE
Inner tube
1. Grease the guard support grooves on the yoke
(21), use grease classified under NLGI NO. 2
MULTI-PURPOSE LITHIUM EP GREASE.
ZEIL15BB00131AA 1
2. Install the guard support (13) into the yoke (21) groove.
NOTE: Install the guard support (13) so that the grease
fitting (35) faces the inner tube (19).
ZEIL15BB00132AA 2
3. Install the guard (16).
NOTE: Make sure to match the grease fitting (6) with the
correct hole as indicated.
4. Install the inner tube guard (17).
NOTE: Make sure to insert the grease fitting (35) in the hole
on the base of the inner tube guard (17).
5. Install the screws (18).
ZEIL15BB00133AA 3
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24. Power Take-Off (PTO) - Power Take-Off (PTO) drive shaft
Outer tube
6. Grease the guard support grooves in the yoke (8) and
the intermediate plate (7), use grease classified under
NLGI NO. 2 MULTI-PURPOSE LITHIUM EP GREASE.
7. Install the guard support (13) into the yoke (8) groove.
NOTE: Place the grease fitting (27) facing the outer tube
(10).
8. Install the guard support (13) on the intermediate plate
(7).
NOTE: Place the reference pins (34) facing the yoke (8).
ZEIL15BB00138AA 4
9. Install the retaining spring (24) to the two edges of the
guard support (13).
ZEIL15BB00139AA 5
10. Install the guard (11) and (14) onto the intermediate
plate (7).
NOTE: Align the radial holes (26) to the holes of the refer-
ence pins (34) of the guard support (13) on the intermediate
plate (7).
NOTE: Align the hole (28) in the guard (14) to the grease
fitting (27) on the smaller guard support (13).
ZEIL15BB00140AY 6
11. Install the outer tube guard (15).
NOTE: Make sure to insert the grease fitting (27) in the hole
(29) on the base of the outer tube guard (15). See Figure
8.
12. Install the screws (12) on the radial holes of the guard
(11).
ZEIL15BB00134AA 7
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