Flowserve Guardian Sealless Metallic - Manual (Page 41)

GUARDIAN USER INSTRUCTIONS ENGLISH 71569212 08-11
Page 41 of 68 flowserve.com
6.7.4.1 Figure 6-7: Wet end assembly
b) Remove and discard retainer ring/bearing
housing O-ring [4610.1]. Remove the adapter
[1340] from the bearing holder. Remove and
discard O-ring [4610.7].
c) Remove the containment shell [224]. Remove
the bearing holder/containment shell O-ring
[4610.3] from the bearing holder [3830] and
discard.
(Figure 6-8.)
Figure 6-8: Containment shell removal
Close-coupled pumps ONLY. Before removing
impeller from the pump shaft, the impeller fastener
[2913] and O-ring [4610.8] must be removed from
the center of the impeller. (See Figure 6-9.)
Figure 6-9: Impeller/fastener schematic
d) Remove impeller [2200] from pump shaft [2100.1].
Remove the impeller by rapping the impeller vane
carefully with a hard rubber or leather mallet while
holding the inner magnet stationary.
Group 1. To hold inner magnet stationary, place
a wrench on the flats at the rear of the inner
magnet (the impeller threads are right hand).
Group 2 (JG/JH - MG/MH couplings). To hold
inner magnet stationary, place a wrench on the
flats at the rear of the inner magnet (the impeller
threads are right hand).
Group 2 (NG/NH - QG/QH couplings). To hold
inner magnet stationary, place an adjustable
spanner wrench in the two 5 mm (3/16 in.)
diameter holes at the rear of the inner magnet.
Be careful not to contact the bearing holder face
while removing the impeller. Do not bend the
impeller vanes. (Figure 6-10.)
Figure 6-10: Impeller/bearing holder
e) Group 1. Remove the thrust collar [3610] and
thrust journal [211] from the bearing holder
[3830].
(Figure 6-11.)
Group 2. Remove the thrust collar [3610], thrust
collar ring [207] and thrust journal [211] from the
bearing holder [3830].
Figure 6-11: Thrust collar
f) Remove the thrust collar/ring O-ring [4610.5] and
the thrust collar/pump shaft O-ring [4610.4] from
the thrust collar and discard. Save and protect
the impeller setting shims [3126.2] for
reassembly.