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Repair 

10

334127D

Replace the Throat Packings

The throat packings are available as pre-assembled 
kits.

1. Relieve the pressure. See 

Pressure Relief Proce-

dure

 on page 

8

.

2. See Figure 3. Unscrew the packing nut (2) using a 

pipe wrench. Remove the o-ring (27) and washer 
(26) from the bottom of the packing housing (25) or 
from the outlet housing (3).

3. Place the flats of the packing nut (2) in a vise. 

Unscrew the packing housing (25) and discard it 
and the packings.

4. Remove the washer (24), seal (23), and back up 

washer (22) from the packing nut.

5. The throat repair kit is pre-assembled. Screw the kit 

into the packing nut (2), making sure that the 
backup washer (22), seal (23), and washer (24) are 
properly positioned on top of the packing housing 
(25) with the lips of the seal facing down. Torque the 
packing housing (25) to 225 +/- 10 ft-lb (305 +/- 14 
N•m).

6. Before installing the packing housing into the pump, 

generously lubricate the seals with the high tem-
perature grease supplied with the repair kit.

7. If necessary, use an arbor press to install the o-ring 

(27) in the packing housing (25).

8. Screw the packing nut (2) and packing housing (25) 

into the outlet housing (3). Torque to 150 +/- 30 ft-lb 
(203 +/- 41 N•m).

Pump Part No.

Throat Seal Repair Kit

24W152

24V752

24W153

24V753

24W150

24V752

24W151

24V753

F

IG

. 3: Replace Throat Packings

WLD

Torque to 225 +/- 10 ft-lbs (305 +/- 147 N•m).

Torque to 150 +/- 30 ft-lbs (203 +/- 41 N•m).

Lips of the u-cup packing must face down.

1

2

3

Summary of Contents for Check-Mate 800

Page 1: ...ons For professional use only 5850 psi 40 MPa 403 bar Maximum Fluid Working Pressure 400 F 204 C Maximum Operating Temperature See page 2 for model information Important Safety Instructions Read all w...

Page 2: ...4 Parts 16 5 Gallon 20 Liter Pumps 16 55 Gallon 200 Liter Pumps 18 Technical Specifications 20 Graco Standard Warranty 22 Models Related Manuals Manuals are available at www graco com Component manual...

Page 3: ...serious injury that can result in amputation Get immediate surgical treatment Do not point the dispensing device at anyone or at any part of the body Do not put your hand over the fluid outlet Do not...

Page 4: ...EQUIPMENT MISUSE HAZARD Misuse can cause death or serious injury Do not operate the unit when fatigued or under the influence of drugs or alcohol Do not exceed the maximum working pressure or temperat...

Page 5: ...s fluid in approved containers and dispose of it according to applicable guidelines PERSONAL PROTECTIVE EQUIPMENT Wear appropriate protective equipment when in the work area to help prevent serious in...

Page 6: ...nt Identification Key A Displacement Pump B Wetcup C Throat Packing D Outlet Housing E Fluid Outlet F Bleed Valve G Cylinder H Intake Housing J Intake Cylinder K Priming Pistion FIG 1 Check Mate 800 D...

Page 7: ...follow manufacturer s recommenda tions Fluid supply container follow local code Object being dispensed follow local code Connect to a Graco Air Motor The displacement pump may be installed on Senator...

Page 8: ...ogged or that pressure has not been fully relieved after following the steps above very slowly loosen the tip retaining nut or hose end coupling and relieve pressure gradually then loosen completely C...

Page 9: ...page 11 1 Flush the pump if possible Stop the pump at the bottom of its stroke to prevent fluid from drying on the exposed displacement rod 2 Relieve the pressure See Pressure Relieve Pro cedure on p...

Page 10: ...aking sure that the backup washer 22 seal 23 and washer 24 are properly positioned on top of the packing housing 25 with the lips of the seal facing down Torque the packing housing 25 to 225 10 ft lb...

Page 11: ...use a second wrench to unscrew the priming piston seat 21 from the rod 4 Slide the priming piston 20 off the rod Inspect the inner and outer surfaces of the piston 20 for scor ing wear or other damage...

Page 12: ...on page 8 2 Disconnect the displacement pump See the system manual for instructions 3 Place the pump in a vise with the outlet housing 3 positioned as shown in Figure 5 4 Remove the priming piston 20...

Page 13: ...e the priming piston rod 17 then slide the pre assembled intake valve V into the rod making certain that the packing nut 31 goes on the rod first Push the valve assembly up the rod as far as possible...

Page 14: ...king around the top of the cylinder 8 unscrew the cylinder from the outlet housing using a pipe wrench Remove the top cylinder seal See Figure 9 6 Place the flats of the displacement rod 1 in a vise U...

Page 15: ...he cylinder into the valve housing 12 Screw the outlet housing 3 onto the cylinder Torque to 390 45 ft lb 528 61 N m 13 Lubricate the displacement rod 1 Slide the rod piston assembly and priming pisto...

Page 16: ...d 24W153 WL D Torque to 25 2 ft lbs 34 2 7 N m Torque to 390 45 ft lbs 528 61 N m Torque to 150 30 ft lbs 203 41 N m Torque to 60 3 ft lbs 81 4 N m Torque to 97 5 ft lbs 131 7 N m 1 2 3 4 5 Torque to...

Page 17: ...E piston 200 1 11 113355 BEARING piston 1 12 189441 SEAT piston 1 13 190597 HOUSING valve 1 14 189514 VALVE intake 1 15 189446 SEAT valve 1 16 113041 PACKING o ring 1 17 ROD piston 1 18 190608 CYLINDE...

Page 18: ...24W151 WL D Torque to 25 2 ft lbs 34 2 7 N m Torque to 390 45 ft lbs 528 61 N m Torque to 150 30 ft lbs 203 41 N m Torque to 60 3 ft lbs 81 4 N m Torque to 97 5 ft lbs 131 7 N m 1 2 3 4 5 Torque to 22...

Page 19: ...00 1 11 113355 BEARING piston 1 12 189441 SEAT piston 1 13 190597 HOUSING valve 1 14 189514 VALVE intake 1 15 189446 SEAT valve 1 16 113041 PACKING o ring 1 17 184400 ROD piston 1 18 190586 CYLINDER i...

Page 20: ...8 cm2 Maximum pump operating temperature 400 F 200 C Fluid outlet size 1 in npt f Wetted parts Carbon steel chrome zinc nickel plating alloy steel ductile iron fluoroelastomer PTFE bronze stainless st...

Page 21: ...Technical Specifications 334127D 21 Notes...

Page 22: ...n material or workmanship repairs will be made at a reasonable charge which charges may include the costs of parts labor and transportation THIS WARRANTY IS EXCLUSIVE AND IS IN LIEU OF ANY OTHER WARRA...

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