OMKK36433

Symptom	Problem	Solution
Inner spray boom section does not fold out	Faulty switch	Replace switch.
	Damaged, or corroded electrical connections	Repair, replace, or clean electrical connection.
	Failed solenoid coil or relay	Replace coil or relay.
	Sticking hydraulic spool	See your John Deere dealer.
	Check valve stuck shut in load sense line	See your John Deere dealer.
	Clogged orifice, or hydraulic line	Remove and clean the orifice, or the hydraulic line.
	Faulty inner spray boom fold cylinder	See your John Deere dealer.

Outer spray boom section does not fold out	Faulty switch	Replace switch.
	Damaged, or corroded electrical connections	Repair, replace, or clean electrical connection.
	Failed solenoid coil or relay	Replace coil or relay.
	Sticking hydraulic spool	See your John Deere dealer.
	Check valve stuck shut in the load sense line	See your John Deere dealer.
	Clogged orifice, or hydraulic line	Remove and clean the orifice, or the hydraulic line.
	Faulty inner spray boom cylinder switch	See your John Deere dealer.
	Faulty outer spray boom fold cylinder	See you John Deere dealer.

Outer spray boom section folds out part way and stops

Hydraulic cylinder magnetic switch releases

Fold spray boom and retry unfolding procedure.

Inner spray boom section does not fold in	Faulty switch	Replace switch.
	Damaged, or corroded electrical connections	Repair, replace, or clean electrical connection.
	Failed solenoid coil or relay	Replace coil or relay.
	Sticking hydraulic spool	See your John Deere dealer.
	Clogged orifice, or hydraulic line	Remove and clean the orifice or the hydraulic line.
	Faulty outer spray boom cylinder switch	See your John Deere dealer.
	Faulty inner spray boom fold cylinder	See your John Deere dealer.

Inner spray boom section folds in part way, and stops

Hydraulic cylinder magnetic switch releases

Unfold spray boom and retry folding procedure.

Outer spray boom section does not fold in, or inner spray boom folds in before outer spray boom	Faulty switch	Replace switch.
	Damaged, or corroded electrical connections	Repair, replace, or clean electrical connections.
	Failed solenoid coil or relay	Replace coil or relay.
	Sticking hydraulic spool	See your John Deere dealer.
	Check valve stuck shut in the load sense line	See your John Deere dealer.
	Clogged orifice, or hydraulic line	Remove and clean the orifice or the hydraulic line.
	Faulty outer spray boom fold cylinder	See your John Deere dealer.

Spray boom will not return to level after rolling in either direction, or spray boom will not roll freely

Suspended center frame binds at wear plates, or center mounting bearings too far forward on shaft

See your John Deere dealer.

Spray boom does not raise or lower	Faulty switch	Replace switch.
	Damaged, or corroded electrical connections	Repair, replace, or clean electrical connection.
	Failed solenoid coil or relay	Replace coil or relay.
	Sticking hydraulic spool	See your John Deere dealer.
	Check valve stuck shut in the load sense line	See your John Deere dealer.
	Faulty lift cylinders	See your John Deere dealer.
	Hydraulic compensator pressure not as specified	See your John Deere dealer.

Spray boom lift raises too fast

Orifice in the hydraulic line is missing

Install correct size orifice.

One individual spray boom function does not stop when switch is released, or is slow to release	Sticking, or faulty switch	Repair or replace switch.
	Sticking hydraulic spool assembly	See your John Deere dealer.
	Faulty solenoid valve	Repair or replace solenoid valve.

TS95756,00004D1-19-20170327