Kubota BX23S, LA340, BT603 Repair and Operator Manuals

Kubota BX23S, LA340, BT603 Tractor Workshop Manual – 511 Pages
Kubota BX23S, LA340, BT603 Tractor Operators Manual – 178 Pages
Kubota Tractor Model BX23S, LA340, BT603

Table of Content of the Workshop Service Manual

This Workshop Manual tells the servicing personnel about the mechanism, servicing and maintenance of BX23S. It contains 4 parts: “Information”, “General”, “Mechanism”, and “Servicing”.
Information
This section primarily contains information below.
Safety first
Safety decal
Dimensions
General
This section primarily contains information below.
Engine identification
Model identification
General precautions
Maintenance check list
Check and maintenance
Special tools
Mechanism
This section contains information on the structure and the function of the unit. Before you continue with the subsequent sections, make sure that you read this section.
Servicing
This section primarily contains information below.
Troubleshooting
Servicing specifications
Tightening torques
Checking, disassembling and servicing

Extract of table of content for the BX23S Tractor :

SERVICING …………………………………………………………………………………………………………………………………..4-23
1. Troubleshooting for transaxle …………………………………………………………………………………………………..4-23
2. Servicing specifications for transaxle ………………………………………………………………………………………..4-27
3. Tightening torques for transaxle ……………………………………………………………………………………………….4-28
4. Checking and adjusting …………………………………………………………………………………………………………..4-29
4.1 Adjusting maximum speed ………………………………………………………………………………………………..4-29
4.2 Adjusting HST neutral position…………………………………………………………………………………………..4-29
4.3 Checking and adjusting HST neutral spring (dynamic braking) ………………………………………………4-30
4.4 Checking charge relief pressure ………………………………………………………………………………………..4-31
4.5 Checking high relief pressure (Forward) ……………………………………………………………………………..4-32
4.6 Checking high relief pressure (Reverse)……………………………………………………………………………..4-33
4.7 Readjusting relief valve (When HST does not work due to its loose hexagon socket head screw) 4-33
4.8 Checking PTO clutch operating pressure…………………………………………………………………………….4-34
4.9 Adjusting brake pedal free travel………………………………………………………………………………………..4-35
5. Disassembling and assembling ………………………………………………………………………………………………..4-35
5.1 Separating transaxle ………………………………………………………………………………………………………..4-35
5.1.1 Draining transmission fluid…………………………………………………………………………………………4-35
5.1.2 Removing battery……………………………………………………………………………………………………..4-36
5.1.3 Removing lift rod and lower link………………………………………………………………………………….4-36
5.1.4 Removing ROPS ……………………………………………………………………………………………………..4-37
5.1.5 Removing seat…………………………………………………………………………………………………………4-37
5.1.6 Removing step…………………………………………………………………………………………………………4-37
5.1.7 Removing fender ……………………………………………………………………………………………………..4-38
5.1.8 Removing fuel tank …………………………………………………………………………………………………..4-38
5.1.9 Removing rear wheel………………………………………………………………………………………………..4-39
5.1.10 Removing fender center stay……………………………………………………………………………………4-39
5.1.11 Removing fender bracket and hitch plate……………………………………………………………………4-39
5.1.12 Removing transaxle assembly………………………………………………………………………………….4-40
5.1.13 Removing brake pedal…………………………………………………………………………………………….4-41
5.1.14 Removing propeller shaft…………………………………………………………………………………………4-41
5.1.15 Removing differential lock pedal ……………………………………………………………………………….4-41
5.1.16 Removing speed control pedal, HST damper, and cruise rod ………………………………………. 4-42
5.2 Hydrostatic transmission …………………………………………………………………………………………………..4-42
5.2.1 Removing levers and mower lift arm …………………………………………………………………………..4-42
5.2.2 Removing PTO clutch valve……………………………………………………………………………………….4-43
5.2.3 Removing oil cooler cover …………………………………………………………………………………………4-43
5.2.4 Removing center section and valve plates …………………………………………………………………..4-43
5.2.5 Removing check and high pressure relief valve plug …………………………………………………….4-44
5.2.6 Checking check and high pressure relief valve …………………………………………………………….4-44
5.2.7 Removing cylinder block……………………………………………………………………………………………4-45
5.2.8 Removing cylinder block and piston ……………………………………………………………………………4-45
5.2.9 Removing swashplate and trust roller bearing………………………………………………………………4-46
5.2.10 Removing 4WD detent ball ………………………………………………………………………………………4-47
5.2.11 Removing neutral arm and trunnion arm…………………………………………………………………….4-47
5.3 Hydraulic cylinder…………………………………………………………………………………………………………….4-47
5.3.1 Removing hydraulic cylinder………………………………………………………………………………………4-47
5.4 Transaxle shafts ………………………………………………………………………………………………………………4-48
5.4.1 Removing transaxle case front cover ………………………………………………………………………….4-48
5.4.2 Removing hydraulic pump assembly …………………………………………………………………………..4-49
5.4.3 Removing rear PTO cover assembly …………………………………………………………………………..4-50
5.4.4 Disassembling rear axle (L.H.) …………………………………………………………………………………..4-50
5.4.5 Removing rear axle case (R.H.) …………………………………………………………………………………4-51
5.4.6 Removing 66T final gear……………………………………………………………………………………………4-52
5.4.7 Removing rear axle case, R.H. and brake……………………………………………………………………4-53