Hale RSD - Manual (Page 82)

❑ Corrective Maintenance
82 RSD Series Single-Stage PTO Pumps
p/n: 029-0020-92-0
Volute
(See Figure 6-4: “RSD Pump Parts Overview,” on page 80.)
The volute is sealed to the pump housing with an O-ring and gasket that
must also be inspected for splits, cracks, flat spots, etc.
1. Volutes are mounted for either engine rotation (clockwise), as viewed
from the suction inlet, or opposite engine rotation (counterclockwise).
Note the direction of flow before disassembly. (See Figure 2-6: “Pump /
Engine Rotation,” on page 17.)
2. Remove the suction head (if installed) - see heading “Suction Head” on
page 79.
3. Disconnect the water line
compression fittings and
the gearbox water cooling
lines from the volute.
(See Figure 6-5: “Typical
Water Cooling Lines,” on
page 82.)
4. Match mark the volute
and pump housing to
ensure proper re-align-
ment during reassembly,
then remove the twelve
(12) 7/16”-14 screws.
Install two (2) 7/16”-14
jacking screws into the
suction head flange.
Tighten the jacking
screws EVENLY to
unseat the suction head and seal ring from the volute. Support the
weight of the volute as it is heavy and bulky.
IMPORTANT !
DO NOT DAMAGE THE BRASS CLEARANCE RINGS OR IMPELLER AS YOU
SEPARATE THE VOLUTE (PUMP BODY) FROM THE PUMP HOUSING. THE
IMPELLER, CLEARANCE RINGS AND MECHANICAL SEAL ASSEMBLY NEED
NOT BE REMOVED.
Figure 6-5: Typical Water Cooling Lines