Goulds Pumps AF (Axial Flow) (42"/1200mm/54/60"/66") LM/LMR Bearings - IOM" - Manual (Page 45)

AF (42-66) IOM 45
DISASSEMBLY & RE-ASSEMBLY
PUMP DISASSEMBLY & RE-ASSEMBLY .................................................. 45
Disassembly of Pump ....................................................................... 46
Re-Assembly of Pump ....................................................................... 46
LM & LMR POWER END DISASSEMBLY & RE-ASSEMBLY .................... 46
Power End Disassembly ................................................................... 46
Power End Re-Assembly .................................................................. 47
INSPECTIONS ............................................................................................. 48
Impeller .............................................................................................. 48
Shaft ................................................................................................... 48
Shaft Sleeve ....................................................................................... 48
Bearings ............................................................................................. 48
Oil Seals, O-Rings, Gaskets.............................................................. 48
PUMP DISASSEMBLY & RE-ASSEMBLY
Refer to the pump part list (pg. 50) and sectional
drawings (Fig.’s 22, 23) for proper part designation in
these instructions. The order of steps for
disassembly and assembly of the liquid end and
power end is the suggested method. However, any
workable sequence to accomplish the desired results
may be used.
Pump Disassembly
1. Remove all auxiliary water lines to pump and
completely drain pump and pipeline. Remove bolts
which fasten pump to suction and discharge piping.
2. If the pump is pipe mounted remove it from the
piping and support it on adequate cribbing. If the
pump is base mounted the casing (100) and power
end may be removed while the elbow (315A)
remains attached to the base.
3. Support the casing (100) by the lifting eye on top.
Loosen and remove all of the bolts and nuts that
secure the casing to the elbow (315A). With the
casing supported, swing it away from the impeller
(101) until it clears and set it down on a hard surface.
Be careful not to damage the mating gasket or o-ring
surfaces.
4. Disconnect coupling halves and remove any
intermediate shafting.
Support the impeller (101) with a chain around top
vane. Remove the impeller end cap (9988).
Remove the screws (370C) that secure the impeller
(101) and shaft washer (9985) to the shaft (122).
Tapped holes in the hub of the impeller on the
discharge side are provided for pulling the impeller
from the shaft. If no holes are provided, strapping or
chains around the impeller vanes will provide a
means of pulling the impeller from the shaft. Always
use the shaft center for the center point of a puller.
Be sure to retain the impeller key (178).
NOTE: If chains are used for pulling, place
blocking between chain and impeller vanes.
5. Support bearing housing (134) and impeller end
of shaft (122). Remove hex head bolts (370G) that
secure bearing housing (134) to suction elbow
(315A).
6. If packing is used, disassemble the gland (107),
packing (106), and lantern rings (105) from stuffing
box. If mechanical seal (383) was used, please see
the mechanical seal IOM for proper removal of seal.
7. With the power end properly supported. Carefully
pull it from suction elbow (315A).
8. The shaft sleeve (126) can be removed by
loosening set screw and sliding the sleeve from shaft
(122). Be sure to retain the sleeve key (128D).
6