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308398

15

Bearing Housing & Connecting Rod

WARNING

INJECTION HAZARD

To reduce the risk of serious injury,
whenever you are instructed to relieve
pressure, follow the 

Pressure Relief

Procedure

 on page 10.

NOTE:

Steps 1 to 13 refer to Fig. 7.

1.

Relieve pressure.

2.

Remove the screws (68) and the front cover (23).

3.

Remove the spring clips (112, 114) and the drain
hose (113). Unscrew the suction tube (30) from the
pump, holding a wrench on the pump intake valve
(B) to keep the pump from loosening.

4.

Disconnect the pump outlet hose (59) from the
displacement pump outlet nipple (87).

5.

Use a screwdriver to push up the retaining spring
(26) at the top of the pump. Push the pin (25) out
the rear.

6.

Loosen the jam nut (27) with an adjustable
wrench. Unscrew and remove the displacement
pump.

7.

Use a hex key wrench to remove the four screws
(73) and lockwashers (74) from the bearing hous-
ing (21).

8.

While pulling the connecting rod (22) with one
hand, lightly tap the lower rear of the bearing
housing (21) with a plastic mallet to loosen it from
the drive housing (20). Pull the bearing housing
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 housing (21), and the inside of
the connecting rod link (D), with high–quality motor
oil (

do not

 

use grease

). Liberally pack the roller

bearing (E) in the connecting rod assembly (22)
with bearing grease.

11. Assemble the connecting rod (22) and bearing

housing (21).

12. Clean the mating surfaces of the bearing and drive

housings.

13. Align the connecting rod with the crank (A) and

carefully align the locating pins (F) in the drive
housing (20) with the holes in the bearing housing
(21). Push the bearing housing onto the drive
housing or tap it into place with a plastic mallet.

CAUTION

DO NOT use the bearing housing screws (73) to
align or seat the bearing housing with the drive
housing. These parts must be aligned using the
locating pins (F), to help avoid premature bearing
wear.

14. Install the screws (73) and lockwashers (74) on the

bearing housing. Tighten evenly to 40 

"

5 ft-lbs

(54 

"

7 N

m).

15. Refer to Installing the Pump on page 31.

Fig. 7

27

22

114

113

112

03472

30

25

23

68

26

21

59

87

D

E

A

F

20

74

B

C

1

Torque the screw to 
40 

"

5 ft-lbs (54 

"

7 N

m).

73

1

Model 231326 Shown

Содержание 231326

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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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