John Deere 300B 0.00 star(s) (0)

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About the John Deere 300B



John Deere 300B Discussions (25)

Here are the most recent 300B topics from our community.
  1. T

    1980 John Deere 300B injector pump

    A couple of years ago I bought a 300B backhoe. It had been sitting in the guys pasture for 2-3 years. We dragged it back to the shop and tried to start it. No luck. So I did a compression check...
  2. T

    1979 John Deere 300B diesel backhoe question

    Could anyone on the forum help me out with a wiring diagram for my 79 300B back hoe? Its a diesel (not gas)
  3. A

    John Deere 300B Injection Pump Question.

    The tractor recently refuses to run. It started off staying running for only about a minute and cant throttle or anything. Then it would stall out. Now it will not run at all. Changed fuel filter...
  4. M

    JD300B Rockshaft leak

    Hello to all, I have a 1983 JD300B with 3pt hitch that will lift implements but will often need to be jerked or manually helped to do so. I looked through the Hydraulic fill cap hole and can see...
  5. A

    JD300B hose from Hydraulic filter to Transmission Help?

    Where could I find this hose, or what could i use? I can not seem to find low pressure hydraulic lines and I do not want to leave my system drained for days. Thanks!
  6. 7

    John Deere 300B Hydraulics Again

    Hi, I am new here, at least as a member. Have been following this site for years and it has been very educational and there is a lot of knowledge base. My issue again is with the hydraulics of a...
  7. S

    John Deere 300B

    Searching for information for a friend. Looking for a manual for a 300B specifically how to replace the transmission filters. He took them off and doesn't know the order to replace the screws and...
  8. G

    John Deere 300B hyd problem. Pressure Control Valve Orifice???

    Im having intermediate loss of hyd pressure for the loader and hoe. Cleaned suction screen, changed fluid. I understand the Pressure Control Valve (AR65882) can cause my problem and have removed...
  9. D

    hydraulic problems 70's vintage John Deere 300b loader

    Hello all !!! Last month I bought a 70's vintage John Deere 300b tractor with a loader and a cab. After 1/2 hour of using it, the hydraulics start to shutter. If I let it rest for 10 min it...
  10. 6

    John Deere 300b loader slow

    I have a 300b john deere that has always seemed to have a slow loader, boom up and tilt atleast. I have noticed that the first time I start it after its been sitting for a couple days if I raise...
  11. M

    John Deere 300B Gas - Hydraulic Fluid

    I just got a 70's model john deere 300b backhoe. what type of hydraulic fluid should I run it it. I can find any info out through the dealer. thanks
  12. O

    JD300B

    Hello everyone. I am new member who could use some advice. I have a 1972 JD 300b backhoe diesel that has a starting issue. When it sits for a day or so it starts right up after running it if I...
  13. J

    John deere 300b burns oil

    I have a 1980 john deere 300b that buns oil. It is a 3 cylinder diesel..... Why is this so
  14. J

    John deere 300b burns oil

    I have a 1980 john deere 300b that burns oil....why is this so?
  15. J

    John deere 300b issue

    Hi I have a 1980 john deere 300b backhoe/loader. The hydraulics only work at full rpm and are somewhat slow.....I was told the pump sounded good. I am lost and need some help figuring out why the...
  16. J

    John deere 300b hydraulic issues

    Hi I have a 1980 john deere 300b backhoe/loader. The hydraulics only work at full rpm and are somewhat slow.....I was told the pump sounded good. I am lost and need some help figuring out why the...
  17. J

    John deere 300b hydraulic problems

    Hi I have a 1980 john deere 300b backhoe/loader. The hydraulics only work at full rpm and are somewhat slow.....I was told the pump sounded good. I am lost and need some help figuring out why the...
  18. B

    Can't find loader pins for 1974 John deere 300b

    Has anyone found a good source for loader pins for a 1974 John Deere 300D Industrial tractor? I have a part number out of the manual but nothing comes up when Goggled. Mine are shot. Thanks.#...
  19. J

    Backhoe John deere 300B Loader/Backhoe project. Where is the back place to get used parts?

    My father-in-law just bought a old John Deere 300B backhoe/loader, he figures its a 70's vintage. Interestingly enough it might even be one he helped build when he was at John Deere Dubuque Works...
  20. J

    Backhoe John deere 300B Loader/BachWhere is the back place to get used parts?

    Deleted this one 'cause my clumsy thumbs inadvertently published the thread before finishing editing. Moderator, I couldn't figure how to delete this thread, would appreciate if you would do so.
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John Deere 300B Owner Pages

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John Deere 300B Community Rankings

#50 user rating of 156 Construction Equipment items
#149 Viewed of 156 Construction Equipment items
#10 discussed of 156 Construction Equipment items
#2457 user rating of 19625 items overall
#11109 Viewed of 19625 items overall
#510 discussed of 19625 items overall
#11 Ranking of Most-OwnerPages in 19625 items overall
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