Maintenance
Page 17
Tsurumi’s Operation, Service, and Repair Manual
B.
Loosen two casing holder knobs (24). Pivot the casing holders (23) to the side and away
from the casing cover (2). Pull casing cover (2) out of pump casing (1).
NOTE:
•
When you first attempt to remove the casing cover (2), you may feel resistance caused by O-ring
drag.
C.
Position the frame (32) so the pump is facing up (with the engine shroud facing down).
D.
Using a hard plastic hammer, rap on the hex of the impeller to loosen the impeller (3). Then
remove the impeller by turning counterclockwise.
NOTE:
•
The hex is cast into the impeller and is not a separate removable part.
E.
Remove two nuts (34) securing pump anti-vibration mounts to the pump casing.
F.
Remove four bolts and washers (18 and 19) securing the pump casing (1) to the engine.
G.
Remove fixed element of the old seal using a driver similar to the driver in Figure 4-6. The
tool should be sized to have a slip fit with the bore (the sealant used on the mechanical
seal has a strong bond in the casing bore - it will take considerable driving force to remove
the seal - use of an arbor press is recommended).
H.
Clean bore in pump casing to remove all traces of sealant residue.
Figure 4-5: Replacing Rotating Seal Member
(1) Pump Casing
(6) Mechanical Seal
(41) Shim
(19) AL Washer
(18) Flange Bolt
(37) (38) Screw
(34) Spring Nut
