Hitachi 309067 dimensions Motor Test, Setup, Armature Short Circuit Test, 232910 232913, 232916

Page 9

Motor Test

Relieve pressure; page 3.

For checking armature, motor winding and brush electrical continuity.

Setup

1.Unplug sprayer.

2.Remove drive housing. See page 15. This ensures that any resistance noticed in armature test is due to motor and not to worn gears in drive housing.

3.Fig. 3. Remove brush inspection covers (A).

4.Fig.4. Remove screws (25, 26). Lower control board (22a). Disconnect two leads (C) from motor to board.

B

A

Fig. 3

02991

Armature Short Circuit Test

1.Remove fan cover (B). See Fig.3.

2.Spin motor fan by hand. If there are no shorts, motor coasts two or three revolutions before coming to complete stop. If motor does not spin freely, armature is shorted and motor must be replaced. See page 12.

Armature, Brushes, and Motor Wiring Open Circuit Test (Continuity)

1.Fig. 4 Connect red and black motor leads (C) together with a test lead. Turn motor fan by hand at about two revolutions per second.

 

 

brown

 

 

 

80

 

96

 

107

 

 

 

 

 

108

67

 

 

D

 

22a

 

 

 

 

black

 

yellow

 

 

 

green

 

78

 

 

 

 

 

 

 

 

30

 

 

 

 

77

 

 

 

 

 

white

 

black

red

 

 

 

 

 

 

E

 

C

 

 

 

 

 

 

 

232910 – 232913, 232916, 232917

8385A

 

 

80

 

brown

 

107

 

 

119

E

 

 

 

 

 

108

67

 

 

D

 

22a

black

 

 

 

 

yellow

 

 

 

white

 

 

 

 

 

78

 

 

 

green

 

 

 

 

 

 

 

 

 

with yellow

 

 

 

 

stripe

 

 

 

 

77

 

 

 

 

 

 

 

black red

 

96

 

 

 

 

 

 

 

116

C

 

blue

 

 

 

 

 

 

 

232918, 232915, 232919, 232914, 232665

8386A

Fig. 4

 

 

 

 

2.If uneven or no resistance, check for: broken brush springs, brush leads, motor leads; loose brush terminal screws or motor lead terminals; worn brushes. See page 10.

3.If still uneven or no resistance, replace motor; page 12.

309067 9

Image 9
Contents 309067 ULTRAr MAXAirless Paint Sprayer 232665, 232918, 232916, 232919 Component Function and IdentificationGeneral Repair Information Pressure Relief ProcedureElectric Shock Hazard Explosion HazardGrounding TroubleshootingElectrical Intermediate Problem Solving Intermediate Problem Solving Move sprayer to shaded, cooler area if Motor Test SetupArmature Short Circuit Test 232910 232913, 232916Test brushes Motor BrushesRepairing pump Displacement PumpRemoving pump See 232912 232913 232915 232917Motor Pressure Control Repair Motor control board diagnosticsMotor control board removal LED Sprayer Operation Indicates What to do BlinksOn/Off Switch Power CordPressure Adjusting Potentiometer 232916, 232917Drive Housing, Connecting Rod, Crankshaft Pressure Transducer InstallationPressure Transducer Seal Removal9666A Replacement Drain ValveRepair Technical Data DimensionsAccessories Complete Sprayer Parts 232915, B 232917, B232914, 232915, 232918, 232919 YExtra Warning Labels available free 232914, a 232916, a 232918, a 232919, a 101 232665, a 218359 232914 232918, a 232916, a 232919, a 232914, A, 232665, aModel 232912 and 232913, Series B 240519 CONNECTING, rod assy 51H 235014 ASSEMBLY, drain valve243189 KIT, pump, displacement Includes 55Model 232910 and 232911, Series a 239979 CRANKSHAFT, U-695236352 POTENTIOMETER, pressure adj Additional Warranty Coverage Graco Standard WarrantyPhone Number Toll Free