JDcrawlers Messageboard

Have you found out the issue with the Left hand clutch? I have a 420 with the exact same problem.

Thanks

Do you know where I can get a CR12389 oil seal for this cylinder? I tore it apart today, but the part stores say that this seal is no longer manufactured.

I am needing to replace the top seal on the hydraulic cylinders for the blade on my 420c. Does anyone know a part number for this seal and where to purchase it at? Are these seals easy to replace? I have never replaced these before. I really appreciate the information that has been provided on my ot...

Thanks for the info. What is the reverser that you mentioned.

How much free travel should the steering levers have on 420c? If the steering levers were set to an incorrect amount of free travel could this prevent the dozer from moving?

You were correct. I adjusted the linkage and now it works great. Thanks for the help.

I am replacing the clutch, pressure plate, throwout bearing, and resurfacing the flywheel on a 420C crawler. Does anyone know the bolt torque specs for the flywheel and the pressure plate?

Sorry posted this question in the wrong section of the forum. First time to post should have read the instructions better.

I am currently fixing a 420 crawler that has been in our family for over 40 years. I think it is a 56 model. The crawler has been sitting for about 20 years with final drive and clutch problems. The final drives and clutches have been repaired and I cranked it for the first time in about 15 years la...