Trouble Shooting

TROUBLE		POSSIBLE CAUSE		REMEDY

	1.	Ball valve on the hydraulic shut	1.	Turn ball valve to the on position.
		off valve not opened to the on po-	2.	Fill with correct fluid.
		sition.	3.	Slowly increase the pressure by
Pump will	2. Low or no hydraulic fluid			turning the regulator knob clockwise.
not stroke.	3. Pressure regulator not turned up to		4.	Call technical service department.
		high enough pressure.	5.	Call technical service department.
	4.	Poor or damaged hydraulic pump	6.	Follow “pressure relief instructions”
	5.	Damaged hydraulic motor	7.	Follow pressure relief procedures and
	6.	Paint pump at full pressure.		check the following; hardened paint in
	7.	Paint pump seized.		pump.

	1.	Fault in pump section.	1.	Pump may need repair.
	2.	Worn spray tip.	2.	Replace tip.
Pump stokes,	3. Improper tip size.		3.	Replace tip.
but poor	4. Material too viscous ( thick ).		4.	Thin material with appropriate thinners,
performance.	5. Gun filter and / or pump filter			per product manufacturer’s instructions.
	plugged.		5.	Clean or replace filter(s).
	6.	Engine may not be running	6.	Check and choke and throttle positions.
		correctly.
	7.	Fluid section seized by dry paint.	7.	Clean & rebuild fluid section. See 15-17

	1.	Air leaks or blockages.	1.	Check the following;
			⇒	Intake tube fitting.
Low or Erratic			⇒	Plugged intake screen.
Output /			⇒	Intake Teflon O-ring.
Pressure	2. Worn Upper Packings, Intake or		2.	Re-pack pump.
		Outgo balls and / or seats.
	3.	Cylinder sleeve leakage.	3.	Replace cylinder sleeve seal ( ref# 15).
	4.	Worn spray tip.	4.	Change tip.
	.

HRO-ST3131

Page 9

Mar 8, 2004

TROUBLE SHOOTING