Graco 332339B important safety instructions Lower Repair, Disassemble the Lower

Repair

Lower Repair

Disassemble the Lower

1.Remove the lower from the driver; see Disconnect the Lower from the Driver, page 9 .

2.Remove the top and bottom throat cartridges (4) to expose the piston rod (2a/2b).

3.Push the piston rod assembly down out the bottom of the cylinder (1).

4.Disassemble the piston rod (2a, 2b), using the flats on both ends. Remove the piston parts (12–16, 42) from the lower rod (2b).

5.Unscrew the upper packing nut (5) from the upper throat cartridge (4). Remove the o-rings (7), packings (10), and bearing (11).

6.Remove the rod guard (8). Unscrew the lower packing nut (6) from the lower throat cartridge

(4). Remove the o-rings (7), packings (10), and bearing (11).

NOTE: The 70 cc lower 24T793 includes two u-cups (10) in the lower throat cartridge; the 35

cc lower 24T792 includes one.

7.Unscrew the dosing valves (25) from the manifolds (19 and 20). Remove the seats (23) and o-rings (22, 24).

8.Disconnect the inlet (29) and outlet (28) tubes at the cylinder (1). Remove the adapters (27) and o-rings (33).

9.Remove the screws (26) holding the manifolds (19, 20) to the cylinder (1). Remove the o-rings (21).

10.Clean and inspect all parts.

12 332339B