Graco Inc 800-048, 801-457, 2104ES manual Photo 1, Pumping Section

	building circuit fuse blown.
	Overload switch has opened.
Electric motor stops while	Power cord unplugged, or
spraying.	building circuit fuse blown.
	Overload breaker.has opened.
	Extension cord
	Tip plugged.
Electric motor runs, but	Displacement pump frozen or
no output.	gear train damage.

SOLUTION

Check, replace.

Unplug power cord'. decrease pressure

~~~~

Check, replace.

Unplug powei cord'. relieve pressure-allow to cool.

DonZ usemore than loOftoi 8 ga extension cord.

Remove and clean

Thaw,

'This unit has an overload breaker built into the switch assembly. itIfopens, unplug power cord and let sprayer cool for 30 to 60 minutes. Also, try to correct the causeof overheating. Always use the lowest pressure setting needed.

NOTE: A M11 and M30 metricwrenchesare required for servicing pump.

PUMP

Valves

Photo 1 and 2.

1)Remove the hex plug using an M30 wrench.

2 ) ExamineO-ringunderplugandreplaceif evidence of cuts or distortion.

3)Removevalveassemblyincluding,retainer.

spring, valve and valve seat from valve cavity.

MOTE: Valve assembly may come apart during removal.

41 Replacevalve parts with service kit (801-041) includingretainer,spring, valve,valveseat, o- ring and back-up-ring.

5)Replace valve cover and torque to 75 ft-lb (100 Nm) .

Pumping Section

Photo 3.

1)Remove the four {4)hex nuts from the manifold.

2)Separate the manifold from the crankcase.

NOTE: It maybenecessarytotap manifold lightly with mallet to loosen.

IKeep manifold properlyaligned1with ceramic plungers when removing toavoid damage to either Dlunclers or seals.

~ ~~ ~~ ~

3)Carefully examine each plunger for any scoring and replace if necessary.

6801-457

.... ~	. . .	~	. .
. .. .