Graco 4000cc, 3000cc Repair, Replace the Throat Packings Without Disconnecting the Lower

Repair

Repair

Replace the Throat Packings

Without Disconnecting the

Lower

NOTE: Throat packing kits are available. See page 22. Kit parts are marked with a symbol, for example (30†). For best results, install the TSL Pump Repair Kit 24F618 each time the throat packings are changed.

NOTE: To replace the throat packings as part of a com- plete service of the lower, see page 9.

NOTE: Tool Kit 24F494 is available as an accessory. The kit includes two wrenches for use with the wet-cup (34) and throat cartridge (27).

1.Flush the pump, if possible.

2.Stop the pump at the middle of its stroke.

3.Relieve the pressure. See your separate pump manual.

4.Following the instructions in your separate pump manual, remove the 2-piece shield covering the coupling assembly. Unscrew the coupling nut from the motor shaft. Lift the motor shaft and remove the coupling nut and collars.

5.See FIG. 5. Remove the collar (41) and screws (56), cap (40), and manifold and bottle assembly (53).

6.Remove the wet-cup (34) and o-ring (52). Remove the TSL pump piston seal (36), spring (35), and o-rings (51).

7.Remove the throat cartridge (27). Remove the o-ring (52), glands (32, 33), packings (30, 31), and spring (28).

NOTE: Inspect the surface of the piston rod (19). If it is scratched, replace the piston rod.

8.Lubricate the throat packings and glands. Install the spring (28) and one male gland (31†) in the throat cartridge (27), then seven v-packings with the lips facing down: one UHMWPE (30†), one leather (31†), UHMWPE, leather, UHMWPE, leather, UHM- WPE. Install the female gland (32†). Install three v-packings with the lips facing up: UHMWPE, leather, UHMWPE. Install the other male gland (33†).

9.Lubricate the o-ring (52†) and install it on the wet-cup (34). Install the wet-cup finger-tight.

10.Install the o-ring (52†) on the throat cartridge (27). Apply lubricant to the throat cartridge threads then screw the cartridge into the outlet housing (1).

11.Torque the cartridge (27) to 95-100 ft-lb (129-135 N•m).

12.Torque the wet-cup (34) to 70-75 ft-lb (95-102 N•m).

13.Reassemble the spring (35), TSL pump piston seal (36), and o-rings (51).

14.Reassemble the manifold and bottle assembly (53), cap (40), collar (41) and screws (56). Torque the cap (40) to 34-40 N•m (25-30 ft-lb).

15.Reinstall the coupling nut and collars on the piston rod (19).

16.Reconnect the coupling nut to the motor shaft. See your separate pump assembly manual for correct torque specifications for your model. Reinstall the shield.

3A0540L 7