YAMZ 239 gearbox, repair e-manual (in Russian)
About the manual
Transmission type: YAMZ 239
In the manual you will find
- Step-by-step guide to repair various components and assemblies
- Self-care and maintenance instructions
- Gearbox design and prevention information
- Information for a trip to the service station, if self-repair is not possible
About the manual
Transmission type: YAMZ 239
In the manual you will find
- Step-by-step guide to repair various components and assemblies
- Self-care and maintenance instructions
- Gearbox design and prevention information
- Information for a trip to the service station, if self-repair is not possible
Contents
Introduction
Purpose, device and principle of operation of the gearbox
- Main gearbox
- Synchronizers
- Gearshift mechanism
- Shift control of the main gearbox
- Demultiplier
- Demultiplier design
- The device and operation of the demultiplier synchronizer
- Demultiplier control
- Power flows
- Gearbox lubrication
Transmission operation
Maintenance
- Daily maintenance
- Break-in maintenance
- First maintenance
- Second maintenance
Possible malfunctions of the gearbox with their solutions
Disassembly and assembly of gearbox type YaMZ-239
- Gearbox disassembly procedure
- Dismantling the secondary shaft
- Output shaft assembly
- Dismantling the layshaft
- Assembly of intermediate shaft
- Disassembly and assembly of the demultiplier
Troubleshooting parts gearbox YaMZ-239
- General technical requirements for troubleshooting gears and shafts
- Troubleshooting parts before assembly
Gearbox assembly
Features of adjusting the tapered bearings of the main gearbox type YaMZ-239
- Adjusting the relative position of the primary and secondary shafts
- Preparing the location of the intermediate and secondary shafts in the crankcase
- Adjusting the intermediate shaft rear bearing
- Rear output shaft bearing adjustment
- Adjusting the intermediate shaft front bearing
- Input shaft bearing adjustment
Running in the gearbox after assembly
- General requirements for running in gearboxes
- Basic requirements for a gearbox break-in test bench
- Switchability test
- Checking the demultiplier synchronizer
- Checking the automatic gear lock
- Checking gearboxes for leaks
- Requirements for the appearance of gearbox parts after running in
Gearbox acceptance rules
Packing, transporting and storing gearboxes