Hitachi 231327 manual Troubleshooting, Problem Cause Solution

Page 13

Troubleshooting

WARNING

INJECTION HAZARD

To reduce the risk of serious injury, including fluid injection or splashing in

the eyes or on the skin, or injury from moving parts, always follow the Pressure Relief Procedure Warning, page 10, before checking, adjusting, cleaning or shutting down the sprayer. Disconnect the spark plug!

Check everything in the chart before disassembling the sprayer.

	PROBLEM	CAUSE	SOLUTION

	The engine or sprayer won’t	The engine switch is not on.	Turn on the switch.
	start.
	start.	The engine is out of gas.	Refill the gas tank. See page 8.
		The engine is out of gas.	Refill the gas tank. See page 8.

		The engine oil level is low.	Try to start the engine. Replenish the oil, if nec-
			essary. See Step 4, page 6.

		The spark plug cable is disconnected or it is	Reconnect the spark plug cable or replace the
		damaged	spark plug.

		There is frozen water in the pressure control.	Allow the sprayer to thaw completely before
			starting it.

	The engine won’t “pull over”.	There is oil seeping into the combustion	Remove the spark plug. Pull the starter rope 3
		chamber.	or 4 times. Clean or replace the plug. Try to
			start the engine. Keep the sprayer upright to
			avoid oil seepage.

	The engine operates, but the	The pressure control switch is turned off.	Turn on the switch.
	displacement pump does not
	displacement pump does not
	operate.	The pressure setting is too low.	Turn the pressure adjusting knob clockwise to
			increase pressure.

		The fluid filter (51) is dirty.	Clean the filter. See page 12.

		The tip or the tip filter is clogged.	Clean the tip or the tip filter. See the gun
			instruction manual.

		The displacement–pump rod is stuck due to	Repair the pump. See manual 307806.
		dried paint.

		The connecting rod is worn or damaged.	Replace the connecting rod. See page 15.

		The drive housing is worn or damaged.	Replace the drive housing. See page 16.

		The electrical power is not energizing the field.	Check the wiring connections. See page 23.
			With the pressure control switch turned on and
			the pressure turned to maximum, use a test
			light to check the power at the black and white
			wires from the pressure control.
			Have the pressure control checked by an au-
			thorized Graco dealer.

		The clutch is worn, damaged, or incorrectly	Replace the clutch. See page 20.
		positioned.

		The pinion assembly is worn or damaged.	Repair or replace the pinion assembly. See
			page 18.

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Contents Model 231326, Series D 308398Model Model 231800, Series BSymbols Table of ContentsInjection Hazard Fire and Explosion Hazard Component Identification and Function Connect hose and gun. Refer to Fig Setup202 204 203 Model 231327 shown 03470A Fueling Turn the pressure control switch to OFF To start the engineStartup Before You Start the SprayerUnlock the gun trigger safety To start the pump Pressure Relief Procedure MaintenanceAfter Each 100 Hours of Operation Change the oil How to Flush When to FlushFlushing Model 231326 shown Suction Tube StorageProblem Cause Solution TroubleshootingUse a larger diameter hose and/or reduce Bearing Housing & Connecting Rod Drive Housing 114 Model 231326 Shown Pinion, Clutch, Clamp, Field, & Engine Pinion Housing RemovalRepairing the Pinion Pinion HousingClutch Clamp Field & Wiring HarnessClutch Housing Engine Reassembly Black White RED TER Pressure Control ReplacementRepairing the pump Displacement PumpInstalling the pump. See Fig Removing the pump. See FigParts Drawing Basic Sprayer Description Qty Parts List Basic SprayerParts Drawing Lo-Boy Sprayer Grounding Clamp & Wire Parts List Lo-Boy Sprayer76, 77 117 LOCKWASHER, 7/16 Parts List & Drawing Pinion Assembly Parts List & Drawing Complete SprayerModels 231327 Ref NoDimensions Parts List Pressure ControlParts Drawing Pressure ControlGraco Warranty Technical Data