F i g u r e 11F-5. Pressing Pump Shaft
from Impeller
Inspect the ceramic insert for cracks,
scratches and bond to the impeller. If
the insert is damaged, replace it as fol-
Figure 11F-4. Loosening Inner
lows:
Pump-to-Blower Bolt with Tool J 4242
NOTE
When removing the impeller, pro-
tect the ceramic insert from dam-
a g e a t all
times d u r i n g p u m p
overhaul.
Always lay the impeller
on the bench with the ceramic in-
sert up to prevent damage to the
insert.
4. If necessary, remove the pump drive
coupling from the shaft with tool J 1930
as shown in Figure 11F-6.
Inspection
Clean all of the parts except the shaft
and bearing assembly. The sealed type
pump shaft bearing must not be immersed
in a cleaning fluid since dirt may be
washed in and the fluid cannot be entire-
ly removed.
Revolve the pump shaft bearing slowly
Figure 11F-6. Removing Pump Drive
by hand. Replace the shaft and the seal
C o u p l i n g with Tool J 1930
assembly.
