Hale SMR - Manual (Page 94)

Maintenance and Repair
6-16 Stainless Max Series Pumps
7. With the impeller bores and all surfaces of the mating ring as-
sembly clean, carefully push the mating ring assembly into the
impeller bore. A special “fitting tool” may be needed, order Hale
p/n: 60275/08.
Make sure that the face of the mating ring assembly is squared to
the impeller housing within 0.00393” (0.1 mm).
8. Carefully fit the impeller onto the pump shaft, then reassemble
the pump per preceding heading “Installation Notes” of section
“Rear Wear Ring,” beginning on page 6-12.
If binding occurs apply additional lubricant or clean water. Also
see
WARNING! note on preceding page.
Volute (Body)
See Figure 6-4: “Stainless Max Pump Breakdown” on page 6-9.
The volute is sandwiched between the suction cover plate and the
rear pump plate. It is secured by twelve screws, washers and nuts.
Both cover plates are sealed at the front and rear faces with O-ring
seals. The O-ring seals must be replaced whenever a joint face is
disturbed.
The volute is mounted for either standard (clockwise) rotation, as
viewed from the suction inlet, or reverse (counterclockwise) rotation.
Notice the ARROW in the volute casting, near the discharge outlet,
for rotation direction.
1. First, review preceding section “Before You Begin...,” beginning
on page 6-1.
2. Remove the suction apparatus and front clearance ring as de-
scribed in the previous heading “Suction Tube and Front Clear-
ance Ring,” beginning on page 6-9. The impeller, rear wear ring
and mechanical seal assembly do not need to be removed.
3. Remove the twelve M12 bolts and hardware securing the suction
cover plate (with O-ring) to the volute (pump body). See Figure
6-4: “Stainless Max Pump Breakdown” on page 6-9.
4. Insert three jacking screws into the tapped holes adjacent to the
bolt-down holes to assist in pulling the plate from the volute.
Evenly tighten the jacking screws until the suction cover plate is
removable by hand.