Menu
Forums
New posts
Search forums
What's new
New posts
New media
New media comments
New profile posts
Latest activity
Media
New media
New comments
Search media
Members
Current visitors
New profile posts
Search profile posts
Log in
Register
What's new
Search
Search
Search titles and first posts only
Search titles only
By:
New posts
Search forums
Menu
Log in
Register
Forums
Cattle Boards
Trucks, Tractors & Machinery
Slowing hydraulic flow (JD 4020D)
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Reply to thread
Help Support CattleToday:
Message
<blockquote data-quote="jeh7mmmag" data-source="post: 448772" data-attributes="member: 7125"><p>If it is pre 69 look on the aux hyd valve block under the hood on front of firewall for the flow rate adjustment screw. takes a 9/16 wrench and a screwdriver and turn it in til you have the flow you need.</p><p></p><p>After 69 valve and coupler were the same block monted on rear of tractor and it had a flow rate lever turtle/rabbit</p><p></p><p>dont use the inline orfice restrictor because they can cause back pressure on return side and blow motor seal and cylinders.</p><p>do it the correct way or you may see leaks and blown seals.</p><p></p><p>4020 were a constant pressure (2250psi) variable flow at around 8gpm amx at hi idle</p><p></p><p>sonm</p><p> you were proably blowing shaft seal on motor because restriction was put in the return line. If you used motor bidirectial it would cause case pressure in one direction. and case pressure (return flow) were supposed to be very low.</p><p>also sometime high enertia loads will cause failure on motor seals.</p></blockquote><p></p>
[QUOTE="jeh7mmmag, post: 448772, member: 7125"] If it is pre 69 look on the aux hyd valve block under the hood on front of firewall for the flow rate adjustment screw. takes a 9/16 wrench and a screwdriver and turn it in til you have the flow you need. After 69 valve and coupler were the same block monted on rear of tractor and it had a flow rate lever turtle/rabbit dont use the inline orfice restrictor because they can cause back pressure on return side and blow motor seal and cylinders. do it the correct way or you may see leaks and blown seals. 4020 were a constant pressure (2250psi) variable flow at around 8gpm amx at hi idle sonm you were proably blowing shaft seal on motor because restriction was put in the return line. If you used motor bidirectial it would cause case pressure in one direction. and case pressure (return flow) were supposed to be very low. also sometime high enertia loads will cause failure on motor seals. [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Cattle Boards
Trucks, Tractors & Machinery
Slowing hydraulic flow (JD 4020D)
Top