350 right side slipping
- lurch85
- 430 crawler

- Posts: 95
- Joined: Fri Feb 01, 2013 6:11 pm
- Location: Upper Peninsula of Michigan
350 right side slipping
Had the right final drive off before, adjusted clutch with special tool.. adjusted linkages as specified for clutch and brake on that side. Used it in the swamp during winter and never noticed a problem. Now noticing it slipping when warm. Readjusted clutch so that its a bit tight to no avail. Weak pressure plate springs? Can I test the springs to make sure that is the culprit? While I am in there... what is the specs for thickness on the metal and clutxh plates? (Assuming I don't find an oil leak)
John Deere 420C, John Deere 350 straight with Gafner loader, John Deere 4020
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pdmech08
350 Clutch slipping
You don't want it on the tight side. If anything you want to create more clearance on the T/O brg. T/O brg should not touch fingers on pressure plate when steering lever is at rest. Could be weak or broken pressure plate springs or oil.
If you are going to the work of pulling the final, replace the clutches and pressure plate, too much work to be redoing if you guess wrong. Parts are readily available, I normally have them in stock.
Lavoy
Lavoy
Parts and restoration for antique and late model John Deere crawlers.
Owner and moderator www.jdcrawlers.com
Owner and moderator www.jdcrawlers.com
- lurch85
- 430 crawler

- Posts: 95
- Joined: Fri Feb 01, 2013 6:11 pm
- Location: Upper Peninsula of Michigan
interesting (kinda) plot turn. got everything back together and went to adjust things up. everything seemed to be ok until I realized that the brake actuating "collar" and the next one to it are frozen together... (got it to move a bit and now soaking it overnight in some PBPowerblaster... wish I would have checked that out a bit before I got the finals on.
John Deere 420C, John Deere 350 straight with Gafner loader, John Deere 4020
- lurch85
- 430 crawler

- Posts: 95
- Joined: Fri Feb 01, 2013 6:11 pm
- Location: Upper Peninsula of Michigan
UPDATE
well.. got it freed up... too much oil to use a torch... used a heat gun and held it on there for about 10 minutes and was able to suck some Kroil into the gaps after (what seems like hundreds) of back and forth movements. (hammer and punch with a 3 pound hammer one way, with half expecting breaking off the arm where the adjusting bolt hits it), and a rolling head pry bar wedged under the lever on top of the brake band itself..... hopefully little to none of the Kroil got under the band itself. too tired to do more now, will adjust and try again in the daylight.
well.. got it freed up... too much oil to use a torch... used a heat gun and held it on there for about 10 minutes and was able to suck some Kroil into the gaps after (what seems like hundreds) of back and forth movements. (hammer and punch with a 3 pound hammer one way, with half expecting breaking off the arm where the adjusting bolt hits it), and a rolling head pry bar wedged under the lever on top of the brake band itself..... hopefully little to none of the Kroil got under the band itself. too tired to do more now, will adjust and try again in the daylight.
John Deere 420C, John Deere 350 straight with Gafner loader, John Deere 4020
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