Parts catalog of AT311085 front axle for backhoe loader.
Backhoe loaders are versatile machines that are widely used in construction, landscaping, and agricultural applications. The front axle is an essential component of these machines, responsible for bearing the load and providing stability during operation. In this blog post, we will provide a comprehensive guide to the front axle for backhoe loaders, focusing on the AT311085 model used in various John Deere models such as 310SK, 310J, 315SK, 310K, 325J, 325K, 325SK, 410J, 310SJ, 410K, and 315SJ. We will explore the different parts of the front axle, their functions, and the importance of regular maintenance. So, let’s dive in!
1. BEVEL GEAR SET GROUP
The bevel gear set group is a crucial component of the front axle. It consists of multiple parts that work together to transfer power and torque from the engine to the wheels. Here are the main components of the bevel gear set group:
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AT326923 Bevel Gear Set: This set includes the gears responsible for transferring power from the engine to the wheels. It ensures smooth and efficient rotation of the axle.
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Adjustment Plate: The adjustment plate is used to fine-tune the alignment and meshing of the bevel gears. It allows for precise adjustments to ensure optimal performance.
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T228998, T228999, T229000, T229001, T229002 Washers: These washers serve as spacers and help maintain the proper distance between the bevel gears. Each washer has a specific thickness to ensure accurate alignment.
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AL79794 Taper Roller Bearing: The taper roller bearing provides support and reduces friction between the rotating parts of the bevel gear set. It ensures smooth and efficient operation.
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T229009 Bush: The bush acts as a sleeve between the rotating parts of the bevel gear set. It provides support and reduces wear and tear.
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AT339648 Tapered Roller Bearing: Similar to the AL79794 bearing, this tapered roller bearing helps reduce friction and ensures smooth rotation of the bevel gear set.
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AT321949 Shaft Seal: The shaft seal prevents oil leakage and protects the internal components of the bevel gear set. It is essential for maintaining proper lubrication.
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T249879 Washer: This washer acts as a spacer and helps maintain the correct distance and alignment of the bevel gear set.
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14M7498 Hexagon Nut: The hexagon nut secures the bevel gear set in place and prevents it from coming loose during operation.
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Rings: The rings, including T229011, T229012, T229013, and more, serve as additional spacers to ensure proper alignment and spacing of the bevel gear set components.
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T229010 Ring: This ring has specific dimensions (DI=405/DA=50/h=555) and plays a crucial role in maintaining the integrity and alignment of the bevel gear set.
Pos. Customer material Name Quantity Techn. Info.
10 AT326923 BEVEL GEAR SET 1
50 ADJUSTMENT PLATE 1
--- T228998 WASHER 1 A=3,3
--- T228999 WASHER 1 A=3,4
--- T229000 WASHER 1 A=3,5
--- T229001 WASHER 1 A=3,6
--- T229002 WASHER 1 A=3,7
80 AL79794 TAPER ROLLER BEARING 1 44,450X88,900X30,162
110 T229009 BUSH 1 A=25,80
150 AT339648 TAPERED ROLLER BEARING 1 40,000X80,000X24,750
190 AT321949 SHAFT SEAL 1 60,0X90,0X10,0/14,5
270 T249879 WASHER 1 S=6,0
290 14M7498 HEXAGON NUT 1 M24X2
300 RING 1
--- T229011 RING 1 A=5,60
--- T229012 RING 1 A=5,65
--- T229013 RING 1 A=5,70
--- T229014 RING 1 A=5,75
--- T229015 RING 1 A=5,80
--- T229016 RING 1 A=5,85
--- T249866 RING 1 A=5,88
--- T229017 RING 1 A=5,90
--- T249867 RING 1 A=5,92
--- T229018 RING 1 A=5,95
--- T229032 RING 1 A=5,98
--- T229033 RING 1 A=6,00
--- T229034 RING 1 A=6,02
--- T229035 RING 1 A=6,04
--- T229036 RING 1 A=6,07
--- T249868 RING 1 A=6,12
--- T229020 RING 1 A=6,15
--- T249869 RING 1 A=6,18
--- T229021 RING 1 A=6,20
--- T249870 RING 1 A=6,22
--- T229022 RING 1 A=6,25
--- T229023 RING 1 A=6,30
--- T229024 RING 1 A=6,35
--- T229025 RING 1 A=6,40
--- T229026 RING 1 A=6,45
--- T229027 RING 1 A=6,50
--- T229028 RING 1 A=6,55
--- T229029 RING 1 A=6,60
--- T229030 RING 1 A=6,65
--- T229031 RING 1 A=6,70
--- T229010 RING 1 DI=40,5/DA=50/h=5,55
--- T229019 RING 1 DI=40,5/DA=50/h=6,1
2. OUTPUT FLANGE
The output flange is another important component of the front axle. It serves as the connection point between the axle and the wheels. Here are the main parts of the output flange:
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T218832 End Yoke: The end yoke connects the output flange to the axle. It provides a secure and stable connection.
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T218833 Screen Sheet: The screen sheet acts as a protective cover for the output flange. It prevents debris and dirt from entering and damaging the internal components.
Pos. Customer material Name Quantity Techn. Info.
210 T218832 END YOKE 1
220 T218833 SCREEN SHEET 1
3. DIFFERENTIAL
The differential is a critical component of the front axle, responsible for distributing power to the wheels while allowing them to rotate at different speeds during turns. Here are the main parts of the differential:
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T229077 Diffcase: The diffcase houses the differential components and provides support and protection.
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Outer and Inner Clutch Disks: The clutch disks allow for smooth engagement and disengagement of the wheels during turns. They ensure that power is distributed evenly to both wheels.
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R75841 Pressure Disk: The pressure disk applies pressure to the clutch disks, ensuring proper engagement and disengagement.
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T229081 Axle Bevel Gear: The axle bevel gear transfers power from the differential to the wheels. It ensures smooth and efficient rotation.
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T249878 Differential Bevel Gear: The differential bevel gear is responsible for distributing power to the axle bevel gears. It allows for smooth operation and even power distribution.
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T229083 Thrust Washer: The thrust washer provides support and reduces friction between the rotating components of the differential.
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T229084 Diffaxle: The diffaxle houses the differential components and provides support and protection.
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T286523 Cap Screw: The cap screws secure the differential components in place, preventing them from coming loose during operation.
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Spring Pin: The spring pin acts as a fastener and secures the differential components together. It ensures they rotate as a unit.
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T229076 Cover: The cover encloses the differential components and protects them from external elements. It helps maintain proper lubrication and prevents contamination.
Pos. Customer material Name Quantity Techn. Info.
570 T229077 DIFF.CASE 1
580 OUTER CLUTCH DISK 10 A=1,4-1,5
--- T229079 OUTER CLUTCH DISK 1 A=1,4
--- T229078 OUTER CLUTCH DISK 1 A=1,5
590 AT339686 INNER CLUTCH DISK 8
600 R75841 PRESSURE DISK 2 Z=26
640 T229081 AXLE BEVEL GEAR 2 Z=14
670 T249878 DIFFERENTIAL BEVEL GEAR 2
680 T229083 THRUST WASHER 2 D-TEIL
720 T229084 DIFF.AXLE 1 250/D
810 T286523 CAP SCREW 16 M10X35
818 SPRING PIN 1 5X30
820 T229076 COVER 1
4. AXLE HOUSING
The axle housing is the outer casing that houses the front axle components. It provides support, protection, and stability. Here are the main parts of the axle housing:
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Shims: The shims, including L41002, L41000, L41005, and more, are used for precise alignment and adjustment of the axle housing components. They ensure proper positioning and prevent excessive play.
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AT303349 Tapered Roller Bearing: This bearing provides support and reduces friction between the rotating components of the axle housing. It ensures smooth and efficient operation.
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O-Ring: The O-ring creates a seal between the axle housing and other components, preventing oil leakage and maintaining proper lubrication.
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Hexagon Screw: The hexagon screws secure the axle housing components in place, preventing them from coming loose during operation.
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Type Plate: The type plate provides essential information about the axle housing, such as model number, specifications, and manufacturer details.
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AT399159 Screw Plug: The screw plug is used for filling and draining oil from the axle housing. It ensures proper lubrication and maintenance.
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Bushing: The bushings provide support and reduce friction between the rotating components of the axle housing. They help maintain smooth operation.
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Shaft Seal: The shaft seal prevents oil leakage and protects the internal components of the axle housing. It is crucial for maintaining proper lubrication.
Pos. Customer material Name Quantity Techn. Info.
80 SHIM 2
--- L41002 SHIM 1
--- L41000 SHIM 1
--- L41005 SHIM 1 A=0,10
--- L41004 SHIM 1 A=0,20
--- L41003 SHIM 1 A=0,30
--- L101689 SHIM 1 A=0,45
--- L41001 SHIM 1 A=0,50
--- L101690 SHIM 1 A=0,55
--- L112211 SHIM 1 A=0,65
--- L112212 SHIM 1 A=0,70
--- L112213 SHIM 1 A=0,75
--- L40999 SHIM 1 A=0,80
--- L112214 SHIM 1 A=0,85
--- L112215 SHIM 1 A=0,90
--- L112216 SHIM 1 A=0,95
--- L40998 SHIM 1 A=1,00
--- L112222 SHIM 1 A=1,05
--- L112217 SHIM 1 A=1,10
--- L112218 SHIM 1 A=1,15
--- L40997 SHIM 1 A=1,20
--- L112219 SHIM 1 A=1,25
--- L112220 SHIM 1 A=1,30
--- L112221 SHIM 1 A=1,35
--- L112210 SHIM 1 A=1,40
--- L112209 SHIM 1 A=1,45
--- L112208 SHIM 1 A=1,50
--- L112207 SHIM 1 A=1,55
--- L112206 SHIM 1 A=1,60
--- L112205 SHIM 1 A=1,65
--- L112204 SHIM 1 A=1,70
--- L112203 SHIM 1 A=1,75
--- L112202 SHIM 1 A=1,80
--- L112201 SHIM 1 A=1,85
--- T229087 SHIM 1 A=1,90
--- L112199 SHIM 1 A=1,95
--- L112198 SHIM 1 A=2,00
--- T229121 SHIM 1 A=2,05
--- T229122 SHIM 1 A=2,10
--- T229123 SHIM 1 A=2,15
--- T229124 SHIM 1 A=2,20
--- T229125 SHIM 1 A=2,25
--- T229126 SHIM 1 A=2,30
--- T229127 SHIM 1 A=2,35
--- T229128 SHIM 1 A=2,40
--- T229129 SHIM 1 A=2,45
--- T229130 SHIM 1 A=2,50
90 AT303349 TAPERED ROLLER BEARING 2
120 T218804 O-RING 1
130 19M3005 HEXAGON SCREW 15
180 TYPE PLATE 1
240 AT399159 SCREW PLUG 2
/20 R82198 O-RING 1
340 T229267 BUSH 2
350 L110233 SHAFT SEAL 2
5. AXLE CASING
The axle casing is another integral part of the front axle, responsible for supporting and protecting the axle components. Here are the main parts of the axle casing:
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T229262, T229253 Axle Casing: These axle casings provide support and protection to the internal axle components. They ensure stability and prevent damage.
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AT326538, AT326540 Tie Rod: The tie rods are essential for steering control and stability. They connect the axle casing to other steering components.
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AT326539, AT339807 Ball Joint: The ball joints allow for smooth rotation and articulation of the axle casing. They provide flexibility and ensure proper wheel alignment during steering.
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T229268 Hexagon Nut: The hexagon nut secures the tie rod and ball joint in place, preventing them from coming loose during operation.
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AT309307 Hexagon Nut: This nut is used for securing the axle casing components, providing stability and preventing them from shifting or vibrating.
Pos. Customer material Name Quantity
10 T229262 AXLE CASING 1
20 T229253 AXLE CASING 1
420 AT326538 TIE ROD 1
/10 AT326539 BALL JOINT 1
/20 AT339807 AXIAL JOINT 1
/30 T229268 HEXAGON NUT 1
/40 AT309307 HEXAGON NUT 1
470 BUSH 2
550 AT326537 TIE ROD 1
/10 AT326540 BALL JOINT 1
/20 AT339807 AXIAL JOINT 1
/30 T229268 HEXAGON NUT 1
/40 AT309307 HEXAGON NUT 1
6. STEERING KNUCKLE
The steering knuckle is responsible for connecting the axle assembly to the wheels and allowing for steering control. Here are the main parts of the steering knuckle:
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T229251, T229152 Joint Housing: The joint housing provides support and protection to the steering knuckle components. It ensures stability and prevents damage.
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AT339808, AT339806 Tapered Roller Bearing: These bearings provide support and reduce friction between the rotating components of the steering knuckle. They ensure smooth steering operation.
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AL79902, AL110924 Multi Sealing Ring: The sealing rings prevent oil leakage and maintain proper lubrication within the steering knuckle. They protect the internal components from contaminants.
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T229260, T229285 Bearing Pin: The bearing pins allow for smooth rotation of the steering knuckle. They provide support and ensure proper wheel alignment during steering.
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19M8011 Hexagon Screw: The hexagon screws secure the steering knuckle components in place, preventing them from coming loose during operation.
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R115119 Ball Bearing: The ball bearings provide smooth and efficient rotation of the steering knuckle. They reduce friction and ensure proper wheel alignment.
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40M5099, 40M7047 Retaining Ring: The retaining rings secure the bearings and other components within the steering knuckle. They prevent them from shifting or coming loose during operation.
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AL79951 Cassette Ring: The cassette ring provides support and stability to the steering knuckle components. It ensures proper alignment and prevents excessive play.
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L40276 Retaining Ring: The retaining ring secures the cassette ring in place, preventing it from coming loose during operation.
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Dunivershaft: The Dunivershaft is a flexible joint that allows for smooth articulation and rotation of the steering knuckle. It provides flexibility and ensures proper wheel alignment during steering.
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T229255 Joint Fork: The joint fork connects the Dunivershaft to the steering knuckle. It provides a secure connection and allows for smooth rotation.
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L100632 Joint Cross: The joint cross is a crucial component of the universal joint assembly. It allows for smooth transfer of power between the steering knuckle and the Dunivershaft.
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Double Joint: The double joint provides a flexible connection between the steering knuckle and the Dunivershaft. It allows for smooth rotation and articulation during steering.
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T218484 Cassette Ring: The cassette ring provides support and stability to the steering knuckle components. It ensures proper alignment and prevents excessive play.
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JD10249 Tapered Roller Bearing: The tapered roller bearing provides support and reduces friction between the rotating components of the steering knuckle. It ensures smooth and efficient operation.
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T281456 Hexagon Screw: The hexagon screws secure the steering knuckle components together, preventing them from coming loose during operation.
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T229271 Bush: The bush acts as a sleeve between the rotating components of the steering knuckle. It provides support and reduces wear and tear.
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T229272 Stop Screw: The stop screw limits the range of rotation of the steering knuckle. It prevents over-rotation and ensures proper steering control.
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14M7345 Hexagon Nut: The hexagon nut secures the stop screw in place, preventing it from coming loose during operation.
Pos. Customer material Name Quantity
10 T229251 JOINT HOUSING 1
20 T229152 JOINT HOUSING 1
70 AT339808 TAPERED ROLLER BEARING 2
80 AT339806 TAPERED ROLLER BEARING 2
110 AL79902 MULTI SEALING RING 2
111 AL110924 MULTI SEALING RING 2
150 T229260 BEARING PIN 2
151 T229285 BEARING PIN 2
170 19M8011 HEXAGON SCREW 16
200 R115119 BALL BEARING 2
220 40M5099 RETAINING RING 2
240 40M7047 RETAINING RING 2
260 AL79951 CASSETTE RING 2
270 L40276 RETAINING RING 2
280 D.UNIVERS.SHAFT 2
/10 T229255 JOINT FORK 1
/20 UNIVERSAL SHAFT 1
/30 L100632 JOINT CROSS 2
/40 DOUBLE JOINT 1
300 T218484 CASSETTE RING 2
320 JD10249 TAPERED ROLLER BEARING 4
350 T281456 HEXAGON SCREW 16
352 T229271 BUSH 16
450 T229272 STOP SCREW 4
470 14M7345 HEXAGON NUT 4
Pos. Customer material Name Quantity
210 T229273 HUB 2
290 L40317 O-RING 2
430 T218487 WHEEL STUD 16
7. HUB REDUCTION
The hub reduction is a mechanism used in the front axle to reduce the speed of rotation and increase the torque delivered to the wheels. Here are the main parts of the hub reduction:
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T229274 Ring Gear: The ring gear is an essential component of the hub reduction mechanism. It meshes with the sun gear to reduce the rotational speed and increase the torque.
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T229250 Sun Gear Shaft: The sun gear shaft is responsible for transmitting power from the differential to the hub reduction mechanism. It engages with the ring gear to reduce rotational speed.
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AT362347 Planet Carrier: The planet carrier holds the planetary gears and allows them to rotate around the sun gear. It is an integral part of the hub reduction mechanism.
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T229258 Planetary Gear: The planetary gears rotate around the sun gear and mesh with the ring gear. They help reduce the speed and increase the torque delivered to the wheels.
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AT339811 Cylinder Roller Bearing: The cylinder roller bearing provides support and reduces friction between the rotating components of the hub reduction mechanism. It ensures smooth and efficient operation.
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T228911 Retaining Ring: The retaining ring secures the cylinder roller bearing in place, preventing it from coming loose during operation.
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T249877 Planet Carrier: The planet carrier holds the planetary gears and provides support. It ensures proper alignment and rotation.
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AT399159 Screw Plug: The screw plug is used for filling and draining oil from the hub reduction mechanism. It ensures proper lubrication and maintenance.
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R82198 O-Ring: The O-ring creates a seal between the screw plug and the hub reduction mechanism. It prevents oil leakage and maintains proper lubrication.
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19M5039 Cap Screw: The cap screws secure the hub reduction components together, preventing them from coming loose during operation.
Pos. Customer material Name Quantity
10 T229274 RING GEAR 2
30 T229250 SUN GEAR SHAFT 2
80 AT362347 PLANET CARRIER 2
/20 T229258 PLANETARY GEAR 3
/30 AT339811 "CYLINDER ROLLER
BEARING" 3
/50 T228911 RETAINING RING 3
/90 T249877 PLANET CARRIER 1
180 AT399159 SCREW PLUG 2
/20 R82198 O-RING 1
220 19M5039 CAP SCREW 4
8. FRONT AXLE STEERING CYLINDER
The front axle steering cylinder is responsible for controlling the steering of the backhoe loader. Here are the main parts of the front axle steering cylinder:
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AT326542 Steering Cylinder: The steering cylinder is the main component of the steering system. It converts hydraulic pressure into linear motion to control the movement of the front axle.
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T218502 Repair Kit: The repair kit includes essential components for maintaining and repairing the steering cylinder. It ensures the longevity and proper functioning of the steering system.
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T229275 Sichring: The Sichring ensures the proper alignment and positioning of the steering cylinder. It prevents it from coming loose during operation.
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T229276, T229277 Plugs: The plugs are used for filling and bleeding the hydraulic fluid in the steering cylinder. They ensure proper lubrication and operation.
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T229278, T229279 Rings: The rings provide a secure seal between the plugs and the steering cylinder. They prevent oil leakage and maintain proper lubrication.
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T229280 Flange: The flange connects the steering cylinder to other steering components. It provides a secure connection and allows for smooth movement.
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T229281 Spacer: The spacer ensures the proper alignment and positioning of the steering cylinder. It prevents excessive play and ensures smooth steering operation.
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T229282 Hexagon Screw: The hexagon screw secures the steering cylinder in place, preventing it from coming loose during operation.
Pos. Customer material Name Quantity
10 AT326542 STEERING CYLINDER 1
/100 T218502 REPAIR KIT 1
/20 T229275 SICH.RING 1
/30 T229276 PLUG 1
/40 T229277 PLUG 2
/50 T229278 RING 1
/60 T229279 RING 2
/80 T229280 FLANGE 1
/90 T229281 SPACER 1
20 T229282 HEXAGON SCREW 3
The front axle is a crucial component of backhoe loaders, and understanding its different parts and their functions is essential for maintenance and repair. In this comprehensive guide, we explored the various components of the front axle, including the bevel gear set group, output flange, differential, axle housing, axle casing, steering knuckle, hub reduction, and front axle steering cylinder. By having a clear understanding of these components and their roles, operators and maintenance personnel can ensure the proper functioning and longevity of the front axle in backhoe loaders. Regular maintenance and timely replacement of worn-out parts will help optimize performance and minimize downtime.
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