20-2290 Service Bulletins On 3 pt Relief Valve

1370rod

Well-known Member
This info should help to determine if your tractors could use this safety valve. The 2 parts are still available for around $160. Rod.
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Rod,
Do you know what S/N they started putting them on at the factory? Or was it a after thought when the 94 series was out?
 
Units prior to ser. no. 9902134 should have them installed. After that the trans case was designed to be stronger and the hyd force was not suppose to be able to crack them. The last pic list the trans ser. no. when that change was to occur. Rod.
 
They can have a malfunction in the cancelling linkage or be misadjusted, but I have never seen a transmission housing cracked because of it. Rod.
 

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