Graco 3A0540L - 3000cc and 4000cc 4-Ball Lowers Manual De Usuario
Repair
3A0540L
7
Repair
Replace the Throat Packings
Without Disconnecting the
Lower
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.
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.
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).
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.
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.
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 F
IG
. 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).
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).
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.
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†).
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.
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).
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).
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.
torque specifications for your model. Reinstall the
shield.