Hale RSD - Manual (Page 83)

83 RSD Series Single-Stage PTO Pumps
p/n: 029-0020-92-0
Co rr ec tive M ain te n an ce
❑
5. Inspect the rear clearance ring, located in the pump housing, for wear
and replace accordingly. See heading “Clearance Rings, Impeller Mea-
surement” on page 85.
6. To remove the clearance ring, use a hammer and chisel to collapse the
ring in the housing. Do not mar the sealing surfaces of the housing.
WARNING !
BE SURE TO WEAR SAFETY GLASSES WHEN REMOVING AND/OR INSTALL-
ING FORCE (PRESS) FITTED PARTS. FAILURE TO COMPLY MAY RESULT IN
SERIOUS EYE INJURY.
Note: Removing the clearance ring renders it inoperative. It must be replaced.
A usual good practice, if one ring requires replacement the other should be re-
placed as well. Also verify the impeller clearance. (See Figure 6-7: “Clearance
Ring and Impeller ID / OD Measurement,” on page 85.)
Installation Notes – Volute
To install the volute, follow the preceding steps in the reverse order, paying
attention to the following:
❑ Review preceding sections “Before You Begin...,” on page 67 and “Clean-
ing and Inspection Guidelines,” on page 70 to ensure a thorough installa-
tion.
❑ Make sure the O-ring is seated in its groove and apply light coat of
grease.
❑ Replace all gaskets. Apply a small amount of grease to the gasket(s)
and align on the pump body.
❑ If the clearance rings are removed, use a press to install them back into
the pump and suction heads.
❑ When installing the volute and suction head, DO NOT damage the clear-
ance rings or impeller.
❑ Reconnect all cooling lines, piping and tubing.
❑ Inspect system for proper operation, then return apparatus to service.
Impeller
(See Figure 6-4: “RSD Pump Parts Overview,” on page 80.)
1. Remove the suction head exposing the impeller, clearance rings and
mechanical seal. See heading “Suction Head” on page 79.