Yanmar 226D hydraulic problems: Yanmar Tractors  -- Other Tractor Brands Discussion Forum and Review Yanmar 226D hydraulic problems: Yanmar Tractors -- Other Tractor Brands Discussion Forum

  parts   |   manuals   |   discussion   |   photos   |   podcast   |   reviews   |   specs   |   dealers   |   classifieds   |   contact   |   faq   |   myProfile   |   home          Login Now | Sign Up


FAQ:   What is a tractor?

Forum Index
New As Posted | Active Subjects



www.emerichsales.com - New & Used Equipment
          View Tractors For Sale!


www.partsbynet.com - Lawn and Garden Equipment Parts


Bernardsville Landscape Lighting
Click to Post a New Message!

Discussion Boards > Active Subjects > Messages as Posted > Yanmar Tractors Forum

Page [ 1 ] |
Reply | Pop Up Window Reply | Add PhotoAdd Photo
 10-08-2002, 18:22 Post: 43566
Steve JS
2002-10-08 18:22:59
Post: 43566
 Yanmar 226D hydraulic problems

I can no longer lift any weight in the loader and the tiller will only pickup up if I rev up the engine. Have changed the hydraulic filter, cleaned the hyd suction screen, removed & inspected the hyd pump and all looks great. Any ideas as to what could be causing the problem? It is as if a relief valve is open.






Reply to PostReply | Quote Post Reply to PostQuote Reply | Add PhotoAdd Photo




Bookmarks: Digg It | Del.icio.us | Stumble This

 10-09-2002, 07:53 Post: 43593
TomG

TP Contributor

Join Date: Feb 2002
Location: Upper Ottawa Valley
TractorPoint Premium Member -- 5 Tractors = Very Frequent Poster
Posts: 5406
 Yanmar 226D hydraulic problems

A relief valve sure could be the explanation. A bad pump is another likely candidate, especially if the suction tube and filter were checked. I don't believe that broken relief valves make the characteristic sound of one that opens at system pressure.

In theory, some sort of failure in the loader valve assembly might provide a return to the sump through the power beyond line, but that seems pretty unlikely. A pressure test done at the auxiliary system outlet port would eliminate problems in the auxiliary system anyway. A manual would describe the procedure for testing the system pressure, and gauges are inexpensive.

If little pressure develops at the aux output port, the question then is whether the relief valve is broken or the pump isn't developing pressure. A dead end pressure test can be preformed directly on the pump output, although a gauge with a different scale would be needed and most manuals don't give max pressure specs. A procedure should be followed here as well.







Reply to PostReply | Quote Post Reply to PostQuote Reply | Add PhotoAdd Photo




Bookmarks: Digg It | Del.icio.us | Stumble This

Reply | Pop Up Window Reply | Add PhotoAdd Photo


Page [ 1 ] |

Discussion Boards > Active Subjects > Messages as Posted > Yanmar Tractors Forum

Thread 43566 Filter by Poster:
Steve JS 1 | TomG 1 |




Most Viewed

+ Yanmar 1500 how to operate
+ What are wet disk brakes?
+ Yanmar 187D information
+ YM 1500 transmission fluid change
+ Yanmar 1500 Diesel Tractor
+ yanmar 1500D overheating
+ Roger,-Whats-so-great-about-Yanmar-336D-?
+ Top 5 things to do when bringing home a new tracto
+ Yanmar 155d
+ yanmar 155d

Most Discussion

+ Yanmar 1500 how to operate
+ No more parts for Yanmars?
+ No More Parts for Yanmars -- P
+ Feeding Deer
+ Oil filter
+ Yanmar 1500D 4 wheel drive doe
+ engine compression
+ Top 5 things to do when bringi
+ Help Victim of JD Stick Shock
+ Front wheels and tires for an

Newest Topics

+ 1500D Dash lights
+ Yanmar 1500D hydraulic fluid change
+ 165d sat for 2 years - battery dead Charged and w
+ Oil Leaking 1500D
+ Yanmar 2000 over heated
+ Yanmar apparal
+ Starter for Yanmar YM2000 Greymarket
+ Winterize
+ Yanmar 2200 Tractor Loader fit Yanmar 336D Tractor
+ Yanmar 70s-90s tractor parts, dealers, and support













Turbochargers for Tractors and Industrial Machines
Cab Glass for Tractors and Industrial Machines

Alternators for Tractors and Industrial Machines
Radiators for Tractors and Industrial Machines

Driveline Components for Tractors and Industrial Machines
Starter Motors for Tractors and Industrial Machines