Graco 215-433 Series G, Series A, 231-005 warranty 135, Intake Valve See Fig

Intake Valve (See Fig 13)

1.Unscrew the extension (62), if used, and remove the retaining ring (52) and strainer (51) from the ex- tension. Clean the parts in solvent.

2.Screw the intake valve housing (138) out of the pump housing (140).

3.Remove the ball stop pin (132), ball guide (136), ball (125) and o-ring (133)from the intake valve housing.

4.Clean all the parts and inspect them for wear or damage, replacing parts as needed.

5.If no further pump service is needed, reassemble the valve and screw it into the pump housing, tor- quing to 65 to 75 ft-Ib (88 to 102 N·m).

Piston, Cylinder, or Displacement Rod (See Fig 13)

1.Screw the intake valve housing out of the pump housing.

2.Loosen the packing nut (141) and push the displace- ment rod (142) down and out of the housing.

3.Secure the rod in a vise and screw the piston stud

(139)out of the displacement rod.

4.Remove the ball (124), retainer (130), glands (137, 135) and packings (127, 131).

5.Clean all parts and inspect them carefully for wear or damage. Inspect the outside of the rod and the inside of the cvlinder for scoring or wear. Replace these parts if needed. A worn rod or cylinder will cause premature wear of the packings.

6.Stack a female gland (135), one PTFE v-packing

(131)and four leather v-packings (127), male gland

(137)and packing retainer (130) on the piston stud. Be sure the lips of the v-packings face UP.

7.Grease the outside of the packings, place a ball

(124)on the piston, and install the piston in the rod. Torque to 65 to 75 ft-Ib (88 to 102 N·m).

NOTE: If you are installing a new sleeve, be sure to install it with the tapered end down and place a new gasket (128) between the sleeve and housing. If the old sleeve cannot be removed easily, contact your nearest Graco Factory Branch or Service Depot.

8.Slide the displacement rod up into the housing from the bottom until it protrudes from the packing nut. Reinstall the intake valve.

Throat Packings (See Fig 13)

1.Screw the intake valve housing out of the pump housing.

2.Remove the piston and rod as explained above.

3.Remove the packings (131, 127) and glands (135, 137) from the throat of the pump housing (140),

4.Clean the throat.

5.Grease the inside of the packings, then install the male gland (137), four leather v-packings (127), one PTFE v-packing (131) and the female gland (135), one at a time into the throat, being sure they "nest" properly. Be sure the lips of the v-packings face DOWN.

USE WRENCHES

ON FLATS ONLY

135

31

LIPS OFTHE

.~~-----=:::...<-..., V-PACKINGS

MUST FACE

DOWN

137

THROAT

PACKINGS

124

30

127

LIPS OF THE

V-PACKINGS

a---'~'MUST FACE UP

35

139

TORQUE TO

66-76 ft-Ib

(88-102 N·m)

PISTON

VALVE

INTAKE
VALVE
Fig 13	-------________

6.Loosely install the packing nut/wet-cup (141).

7.Reinstall the displacement rod and intake valve.

Reassembly (See Fig 12)

1.Secure the displacement rod to the motor with a cotter pin (112).

2.Secure the pump housing (140) to the tie rods (116) and tighten the tie rod locknuts (114) evenly to 35 to 50 ft-Ib (47 to 68 N·m).

3.Tighten the packing nut just enough to stop leakage, but no tighter. Fill the wet-cup 1/4 full with TSL.

4.Install the extension (62) assembly or accessory suction tube.

5.Start the pump and operate it slowly to check the tie rods for binding. Adjust the tie rod locknuts, if necessary, to eliminate binding.

6.Reinstall the pump in its mounting.

7.Before operating the pump, reconnect the sprayer ground wire if it was disconnected during repair.

307-293 1~