PROBLEM 24
Frame connecting pin cylinders will not extend or retract.
POSSIBLE CAUSES
Faulty relief valve; Faulty auxiliary system disable valve; Faulty proportional flow control valve;
Cylinder failure; Faulty control valve section; Mechanical problem.
CHECKS
Check for 12 volts at auxiliary disable valve when enabling cylinders.
12 Volts No Volts
Check for 3,500 psi at upper accessory valve while
enabling any upper accessory valve. (See Te st
16.)
3,500 psi or more
3,500 psi or less
Adjust auxiliary system disable valve and
check pressure. (See Test
25.)
Check Diagnostic display screen (bank 3) for
change of 4 when enabling cylinders.
Change No Change
Check disable valve wiring.
Consult dealer/factory.
Enable problem frame connecting pin cylinder solenoid
valve and check if voltage is present.
Voltage
No Voltage
Check for 12 volts at connecting pins switch wire #53.
Voltage
No Voltage
Problem
No Problem
Check for mechanical problem at
frame connecting pin cylinder.
Replace diode wire to #89D1.
Replace function switch.
Disconnect and plug hoses to problem cylinder and enable valve.
Replace control valve section.
Test cylinder for leakage. (See Tes t
26.)
No Leakage Leakage
Replace cylinder.
Replace cylinder seal.
Repair or replace
cylinder as required.
3,100 psi or more
3,100 psi or less
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