11. Install bearing retainer (043 or 016) using bolts (047 or 017). Tighten bolts (047 or 017) to proper torque
value listed in Table 2.
12. Install idler rotors (021) in idler bores of rotor housing (024) by engaging threads of idler rotors with
threads of power rotor (044 or 063) and rotating idler rotors (021) while inserting them into rotor housing
(024) bores.
13.
(Figures 3, 7, 8)
Install idler balance piston housings (023) on idler rotors (021).
14.
(Figures 3, 7, 8)
Install thrust cage (029), ensuring that bore of thrust cage (029) engages oil balance
tube (026) installed in rotor housing.
15. (
Figure 9)
Install spacer (040 or 050) in housing (001). Install spacers (023 or 051) and thrust plate
(026 or 029) on rotor housing (024) using bolts (029 or 053) and lockwashers (030 or 052). Tighten
bolts (029 or 053).
16. Install gasket (009) and inlet head (002) on case (001) using bolts or capscrews (004). Tighten bolts or
capscrews (004) to proper torque value listed in Table 2.
17. Install drain plugs which were removed during pump disassembly.
18. Install key (031) and coupling hub on power rotor (044 or 063) shaft.
DISASSEMBLY AND ASSEMBLY PROCEDURES (PACKING PUMPS)
Disassembly Procedures (Figures 4, 5 and 6)
NOTE:
Refer to pump assembly drawings, Figures 4 through 6, during pump disassembly.
Disassembly procedures are identical for Figures 4 through 6 unless specifically noted.
1. Close off suction and discharge piping to pump and disconnect piping.
2.
(Figures 5 and 6)
Remove tubing (081) from pump, ensuring that tubing (081) is not bent or flattened.
Remove drain plugs (005 and 080).
3. Remove pump from driver, coupling and mounting bracket. Remove coupling hub and key (031).
4. Remove packing gland nuts (016) with washers (015) and remove packing gland (018).
5. Using a “packing puller” or sharp pointed brass or copper rod, remove packing (017).
6. Remove bolts or capscrews (004), packing box end cover (003) and gasket (009).
7. Remove bolts or capscrews (004), inlet head (002) and gasket (009) from case (001).
8. Remove thrust cage (029).
9. Remove idler balance piston housings (023) and idler rotors (021).
NOTE:
Remove idler rotors (021) by unscrewing idler rotors from housing (024) bores.
10.
(Figures 5 and 6)
Remove spacer (090).
11. Remove cap screws (011) and retainer plate (010).
