komatsu d21p-6 hydraulic control valve seals kit / manu

luckybull7 · Sep 1, 2021

where can we get the seal kit for the hydraulic control valve ?
Any tips before tackling this fix?
I'm also looking for the manual if anyone knows a website

This post was edited by luckybull7 on 09/01/2021 at 05:52 am.

AJ. · Sep 2, 2021

From what I see in your picture the leak appears to be coming from the top around the spools, those seals can be replaced by removing the lever and then the seal retainer, before you start thoroughly clean the valve bank and keep everything clean including your hands and tools, your best bet for the seals is your Komatsu dealer, you can download a PDF copy of the manual from the link below.
AJ
https://www.tradebit.com/filesharing.php/search/0/komatsu+d21p-6

Ashib · Aug 23, 2022

how did you remove the center hydraulic? I m having trouble removing my leaking seal on the center on that lifts the blade up. The center rod has the head on it so you can t just remove the two screws and slide the cap off to replace the gasket.

AJ. · Aug 24, 2022

The yoke on top of the valve unscrews, look carefully to see if the spool has machined flats just under the yoke so a wrench can be used to hold it to undo it, if it's got no flats you will have to remove the bottom cap and hold it from there, it is likely that the bottom bolt will unscrew, then pull the spool up and out.
AJ

komatsu d21p-6 hydraulic control valve seals kit / manu

luckybull7

New User

AJ.

Well-known Member

Ashib

New User

AJ.

Well-known Member

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