BJM Pumps PGV220-575T - Manual (Page 17)

17
Part description Quantity per pump
Impeller 1 piece
Shaft Seal 1 set
Bottom Plate 1 piece
Packing Full set
8) Overhauling procedure (refer to section 11 “Sectional Drawing”).
• Perform the overhauling work with the pump kept in horizontal position.
• Unscrew off the bolts (B1 in Sectional DWG) to separate the pump
from the pump base (170). Then, lift up the pump using the lifting eye-
bolt (58).
• Provided two wooden blocks of about 100mm square onto clean floor
and put the pump thereon horizontally.
• By this, the pump is ready for overhaul. Overhaul the pump in the
procedure given below.
Step Part Name
( ) : part No. in sectional DWG
Overhauling Procedure
( ): Part No. in sectional DWG.
Note
1 Strainer (16) Unscrew off stud nut (SN1)
2 Bottom Plate (15) Unscrew off stud-nut (SN2)
3 Impeller nut (B2) Unscrew off the nut
4 Impeller (14) Draw off the shaft from shaft (8).
Be careful not
to damage the
vanes
5 Casing (13) Unscrew off stud nut (SN3)
6 Drain-out of oil Remove oil plug (28) Follow 5.1 (1)
7 Lower oil box (12L) Unscrew off stud nut (SN4)
8 Shaft seal (10)
After removal of the lower oil
box (12L) in step 7, mechanical
seal parts appear. Pull them out
one by one from the shaft using
a hooked-shaped puller.
9 Upper oil box (12U) and rotor (7) Unscrew off stud nut (SN5)
In this case,
be careful not
to damage
stator coil,
shaft and
bearing.