1999 300 Fourtrax rear brake issue - Honda ATV Forum
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post #1 of 11 (permalink) Old 06-22-2019, 12:13 PM Thread Starter
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1999 300 Fourtrax rear brake issue

I canít get the rear brakes bled. I have pumped and held the peddle many times according to the service manual.Is there a rebuild kit for the master cylinder? Or is the caliper shot? The plunger in the caliper will not move.
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post #2 of 11 (permalink) Old 06-22-2019, 12:53 PM
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I can’t get the rear brakes bled. I have pumped and held the peddle many times according to the service manual.Is there a rebuild kit for the master cylinder? Or is the caliper shot? The plunger in the caliper will not move.
There is a sub-assembly for the master cylinder at partzilla:
https://www.partzilla.com/catalog/ho...aster-cylinder

Rockymountainatv.com probably has one, too.

Can you get brake fluid to flow through the master cylinder and to bleeder valve?

If the slide pin is seized you most likely will not be able to get it to turn. Is it really seized or is the head stripped??
I hope others can give you more advice about this problem.
If it were me, I'd replace the caliper first before rebuilding the master cylinder. Inspect and clean the master cylinder and hose.

Hope this helps you.

Last edited by GirlsRideToo; 06-22-2019 at 01:08 PM.
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post #3 of 11 (permalink) Old 06-22-2019, 03:51 PM
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Question Question

Quote:
I canít get the rear brakes bled. I have pumped and held the peddle many times according to the service manual
Has this 300 been moded with rear hydraulic brakes ? Or, are you talking front brakes ? Because the trx fourtrax 300 has rear cable brake operated, however.... they should have factory with hydro disk....just my 2 ...
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post #4 of 11 (permalink) Old 06-22-2019, 05:13 PM Thread Starter
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It has the hydraulic disk on it.
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post #5 of 11 (permalink) Old 06-22-2019, 08:27 PM
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Here is a sticky with info that you can apply to your disc brake system:

https://www.hondaatvforums.net/forum...ur-brakes.html
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post #6 of 11 (permalink) Old 06-23-2019, 04:00 AM
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https://www.hondaatvforums.net/forum...y-charged.html

I see by your other post (battery charge issue) this is a 300 ex .
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post #7 of 11 (permalink) Old 06-23-2019, 04:08 AM
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Originally Posted by _Wilson_ View Post
https://www.hondaatvforums.net/forum...y-charged.html

I see by your other post (battery charge issue) this is a 300 ex .

Keen eye ! I was wondering about disc on the rear of a 300 Fourtrax
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post #8 of 11 (permalink) Old 06-23-2019, 04:23 AM
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Thx! Had me wondering to. However, I was looking forward to a TRX 300 rear disk build.
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post #9 of 11 (permalink) Old 06-23-2019, 05:46 AM Thread Starter
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Yes it is.
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post #10 of 11 (permalink) Old 06-23-2019, 09:39 AM
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this is why it clearly says on every thread section...PLEASE POST THE FULL MAKE/MODEL/YEAR !. notice the make in these words ??. BIG DIFFENCE BETWEEN A TRX300, AND TRX300EX !.

'89 trx350D foreman 4x4...'85 vf700c magna, '03 trx450fm foreman 4x4 , 2015 Yamaha waverunner fx cruiser ho, '08 vt750c2 shadow spirit
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