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308398

33

Parts List – Lo-Boy Sprayer

Ref 
No.

Part No.

Description

Qty

Ref 
No.

Part No.

Description

Qty

9

100214

LOCKWASHER, 5/16 inch

7

17

101864

CAPSCREW, socket head, 
5/16–18 x 1 inch

4

18

236571

GEAR REDUCER

1

19

236572

PINION HOUSING ASSEMBLY
See parts on page 34

1

20

236962

DRIVE HOUSING 
Includes items 20a to 20c

1

20a

106227

.WASHER, bronze

1

20b

100069

.BALL, sst

1

20c

110293

.TUBE, grease

1

21

236570

BEARING HOUSING 

1

22

236538

CONNECTING ROD 

1

23

236573

COVER, HOUSING 

1

24

112603

CAPSCREW, socket head, 
5/16–18 x 4 inch 

2

25

189664

PIN, straight, 3/8 x 1/8 inch

1

26

189665

SPRING, retaining

1

27

189583

NUT, hex, 2–5/8

 

–16 1

28

236533

DISPLACEMENT PUMP
See manual 307806 for parts

1

29

104008

LOCKWASHER, spring, 5/16 inch

6

31

189920

STRAINER

1

34

190963

HOSE, drain

1

39

101344

CAPSCREW, hex head, 5/16–18,
.875 inch

3

50

239059

KIT, tube, suction, 20 gallon
Includes 50a through 50g

1

50a

{

192013

HOSE, nylon 1 in. x 41 in.

1

50b

{

239296

TUBE, suction, 20 gal.

1

50d

{

101818

CLAMP, hose

2

50e

{

176450

GUARD, hose

1

50f

{

110194

UNION, swivel, 180

_

1

51

237481

FLUID FILTER
See manual 307273 for parts

1

53

239267

VALVE, drain, pressure

1

54

192013

TUBE, drain

1

56

110838

LOCKNUT, 5/16–18

1

59

222516

HOSE, 3/8 inch ID, 29 inch (737 mm),
cpld 3/8 npt(m) x 3/8 npsm(f); 
spring guard both ends

1

63

239266

CONTROL, pressure
See page 35 for parts

1

68

108850

SCREW, filh, 10–24 x 2 inch

4

69

290371

LABEL, cover

1

73

112599

CAPSCREW, socket head, 
7/16–14 x 2.25 inch

4

74

112600 LOCKWASHER, 

7/16

4

76

290372

LABEL, identification, control, bottom

1

77

290375

LABEL, identification, control, top

1

78

206994

THROAT SEAL LIQUID,
8 ounce (0.27 liter)

1

79

110997

FLANGE SCREW, hex head, 
1/4–20 x 5/8 inch

2

87

162485

NIPPLE, hex, 3/8 npt x
3/8 npsm

3

95

158555

NIPPLE, reducing, 1 in. to 3/4 in.

1

97

108868

CLAMP, wire

1

102

Y

185953

LABEL, Danger

1

111

112818

CAPSCREW, hex hd, flange
5/16–18 x 3/4

1

117

237831

BRACKET, filter mounting

1

Y

 Replacement Danger and Warning labels, tags, and

cards are available free.

{

 Included in 239059

French

185956

Spanish

185961

German

186041

Greek

186045

Korean

186049

English

185593

03497A

DANGER LABELS

The English language DANGER label shown on
page 4 is also on your sprayer. If you have painters
who do not read English, order one of the following
labels to apply to your sprayer. The drawing below
shows the best placement of these labels for good
visibility.

Order the labels directly from Graco, free of
charge. Toll Free: 

1–800–609–2894

Apply other
language here

Summary of Contents for 231326

Page 1: ...DripLesst Tip Guard and a 517 size SwitchTipt Model 231800 Series B This is a Lo Boy sprayer without a hose or a gun Model 231382 This is a complete sprayer with hoses and a Contractor gun a RAC IVt D...

Page 2: ...t is for professional use only D Read all instruction manuals tags and labels before operating the equipment D Use the equipment only for its intended purpose If you are not sure call your Graco distr...

Page 3: ...cking or servicing the equipment D Tighten all fluid connections before operating the equipment D Check the hoses tubes and couplings daily Replace worn or damaged parts immediately Do not repair high...

Page 4: ...llow the Pressure Relief Procedure on page 10 to prevent the equipment from starting unexpectedly Liquids can be injected into the body by high pressure airless spray or leaks especially hose leaks Ke...

Page 5: ...air gasoline mixture for cold starting J Throttle Adjusts engine speed for large or small orifice spray tips K Engine Switch Enables disables engine operation L Secondary Fluid Outlet Second hose and...

Page 6: ...er outlet 60 for a one gun operation Never plug this outlet 1 Connect hose and gun Refer to Fig 2 a Remove the plastic cap from the 3 8 npsm m filter outlet nipple 60 Screw the 50 foot 15 2 m main flu...

Page 7: ...water and then flush with clean water b Before using oil base paint flush with mineral spirits only c See Flushing on page 11 for the flushing procedure 8 Prepare the paint according to the manufactur...

Page 8: ...tank for expansion 5 Shut off the engine before refueling 6 After refueling tighten the fuel tank cap firmly Startup Before You Start the Sprayer 1 See Flushing on page 11 to determine if you should...

Page 9: ...uction tube to the paint container Unlock the gun trigger safety Trigger the gun into the water solvent pail just until paint appears Release the trigger and lock the trigger safety Repeat for the sec...

Page 10: ...or W20 EPR U NIPPON DENSO plug Gap the plug to 0 028 to 0 031 inch 0 7 to 0 8 mm Use a spark plug wrench when installing and removing the plug WARNING INJECTION HAZARD The system pressure must be man...

Page 11: ...en Oil base paint flush with mineral spirits and leave the pump hose and gun filled with mineral spirits Shut off the sprayer remove the spark plug cable and open the pressure drain valve to relieve t...

Page 12: ...n tube from the solvent pail Unlock the gun trigger safety Trigger the gun to force solvent from the hose Do not let the pump run dry for more than 30 seconds to avoid damag ing the pump packings Reli...

Page 13: ...ce the plug Try to start the engine Keep the sprayer upright to avoid oil seepage The engine operates but the displacement pump does not The pressure control switch is turned off Turn on the switch di...

Page 14: ...p 11 page 9 The engine speed is too low Increase the throttle setting See Step 11 page 9 The fluid filter 51 the tip filter or the tip is clogged or dirty Clean the filter See page 12 Or see the gun i...

Page 15: ...ing and the connecting rod assembly 22 off the drive housing 9 Inspect the crank A for excessive wear and replace parts as needed 10 Evenly lubricate the inside of the bronze bearing C in the bearing...

Page 16: ...the drive housing or pinion housing DO NOT lose the thrust balls 20b or 19d located at each end of the gear cluster or allow them to fall between the gears The ball which is heavily cov ered with gre...

Page 17: ...308398 17 Drive Housing Fig 8 68 23 29 20 20a 19 29 17 17 29 19d 18 20b 112 114 113 B 21 03473 24 73 74 Model 231326 Shown...

Page 18: ...NOTE Refer to Fig 9 for Steps 1 to 3 1 Relieve pressure 2 Remove the two bottom screws 10 and lock washers 11 first then remove the two side screws 10 and lockwashers 11 and last remove the top screw...

Page 19: ...locks as shown to press off the large bearing 19h B Hydraulic press C Use a round steel bar to push on the shaft 19g D Position two steel bars as shown front bar not shown E Position two steel bars as...

Page 20: ...he back of the bearing housing 21 with a plastic mallet to loosen the assembly D from the clutch housing Pull the assembly away 5 The armature 4a was removed with the pinion housing Remove the armatur...

Page 21: ...r continue on page 21 Fig 13 6 2 12 96 98 B 03479 Clamp NOTE A standard steering wheel puller and two 1 4 28 x 3 or 4 in long screws are required to remove the clamp NOTE Refer to Fig 14 1 Loosen the...

Page 22: ...d lockwashers 9 which hold the clutch housing 2 to the engine 2 Remove the capscrew 15 lockwasher 80 and washer 99 from beneath the mounting plate D 3 Remove the engine key 13 4 Pull off the clutch ho...

Page 23: ...lamp 97 Pull the wires carefully through the grommets 66 before removing the engine Remove the two locknuts 111 and then pull the screws 14 out of the base of the engine 3 Lift the engine carefully an...

Page 24: ...2 Work the wire harness through the slot in the clutch housing With the setscrew holes in the field and the clutch housing 2 aligned tighten the setscrews 12 oppositely and evenly to 27 3 in lb 3 1 0...

Page 25: ...armature 4a is clean Assemble the armature to the shaft in the pinion housing 19 A retaining ring located within the armature makes it difficult to assemble these parts Follow this procedure for the b...

Page 26: ...ontrol cover 76 See Fig 22 4 Carefully remove the pressure control cover 76 so as not to stress the cables 5 Disconnect the black and white wires of the pres sure control cable 314 from the pressure c...

Page 27: ...e manual 307806 for displacement pump repair Installing the pump See Fig 24 1 Screw the pump about 3 4 of the way into the bearing housing 21 Hold the pin 25 up to the pin hole on the connecting rod 2...

Page 28: ...20 21 22 25 26 27 28 Ref 30 31 36 46 41 42 43 44 45 35 47 49 71 72 87 96 98 112 113 114 20a 18 20b 29 19 11 9 10 11 38 35 39 Ref 36 4b 16 11 15 Ref 59 102 69 8 Ref 19d 101 1 3 4 2 Label See page 34 f...

Page 29: ...SCREW mach pan head 10 32 x 5 16 inch 4 40 187604 SLEEVE 2 41 179811 WHEEL semi pneumatic 2 42 101242 RING retaining 2 43 104811 HUBCAP 2 44 154636 WASHER 5 8 inch 2 45 112827 BUTTON snap 2 46 108068...

Page 30: ...4a 4b Model 231800 Ref 36 1 3 2 Label See page 32 for the parts See the detail above 3 1 A A 40 45 37 46 39 Ref 35 41 2 44 42 43 38 35 16 11 98 96 11 16 2 10 12 13 1 101 36 14 66 15 49 6 7 11 3 9 6 4...

Page 31: ...REW socket head 1 4 28 x 1 inch 6 56 110838 LOCKNUT heavy hex 5 16 18 3 35 239055 CART FRAME 1 36 238187 CART HANDLE HOSE RACK 1 37 183350 WASHER plain 2 38 112125 PLUG tubing 2 39 108795 SCREW mach p...

Page 32: ...for the parts See the detail above 5 See page 35 for the parts 1 A A B B 28 27 26 29 68 23 24 73 74 25 22 20 20a 18 19 29 17 29 17 Ref 19d 34 54 21 102 1 3 20b 87 59 Ref 34 76 77 5 51 117 79 63 9 111...

Page 33: ...2013 TUBE drain 1 56 110838 LOCKNUT 5 16 18 1 59 222516 HOSE 3 8 inch ID 29 inch 737 mm cpld 3 8 npt m x 3 8 npsm f spring guard both ends 1 63 239266 CONTROL pressure See page 35 for parts 1 68 10885...

Page 34: ...AY GUN Includes RAC IVt DripLesst Tip Guard and 517 size SwitchTipt See 307614 for parts 1 205 159841 ADAPTER 1 4 18 npt f x 3 8 18 npt m 1 204 203 202 05562 205 Parts List Drawing Pinion Assembly Ref...

Page 35: ...52 CONNECTOR 1 316 112376 LOCKNUT 1 317 100078 SCREW hex head 8 24 x 375 inch 1 318Y 189286 LABEL warning 1 319Y 189246 LABEL warning 1 Y Replacement Danger and Warning labels tags and cards are avail...

Page 36: ...rned to the original purchaser transportation prepaid If inspection of the equipment does not disclose any defect in material or workmanship repairs will be made at a reasonable charge which charges m...

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