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2012 John Deere 318 D Locked Out Boom/Bucket Functions

GBGNO

Member
Joined
Nov 14, 2014
Messages
7
Location
CT
Checked all sensors and switches and everything is functional. Drive and Reverse Functions No Issues. Pressure Test Hydraulic Pump for boom, bucket, and auxiliary which is separate from drive pump and has sufficient pressure (3000 psi +/-). Bucket will curl out but minimal. Boom totally locked out but manual hand controls are unlocked. Problem started intermittently (2 or 3 times had the issue but months in between and restarting machine solved it.) Now totally locked out. Seems like it may be a solenoid or some type of safety lockout. Does anyone know of any common fix for this issue or have access to a schematic so we can test solenoids. Any help greatly appreciated.
 

mg2361

Senior Member
Joined
Jul 5, 2016
Messages
5,145
Location
Pennsylvania
Occupation
Equipment Mechanic
Check your port lock solenoid. Make sure it has good voltage and ground. Check the resistance. If all that is good the valve inside the solenoid may be stuck.

318D Control Valve.png
 
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