S-500 SERIES SUBMERSIBLE PUMPS — OPERATION & PARTS MANUAL — REV. #0 (10/01/04) — PAGE 19
S-500 SERIES SUB. PUMP — MAINTENANCE
LUBRICATION
To check the oil level of the mechanical seal perform the
following:
DISASSEMBLY
Refer to Figure 11 for location of parts to be removed.
1. Position pump upside down.
2. Remove strainer.
3. Remove casing.
4. Remove the pump impeller.
5. Remove the liner.
6. Remove the oil plug and packing.
OIL CHECK
1. Visually inspect oil plug hole to verify that oil cavity is full
enough to cover seal spring. Check every 300 hours, change
hydraulic oil every 6 months (1,000 hours) or as needed.
2. While checking the hydraulic oil level, also check the
condition of the hydraulic oil in the seal cavity . Block the
opening with a finger and roll pump to one side to drain
oil into a small transparent container. If oil is cloudy or has
water in it, drain oil from pump cavity and replace hydrau-
lic oil. Check the seal for wear damage.
3. If oil level is low fill with SAE 10 weight non-detergent
hydraulic oil (i.e. Shell Turbo 32 or equivalent). Fill oil cavity
75% to 85% full (allow air space for expansion). See Table
1 for pump oil cavity capacity.
IMPELLER
1. Make sure the clearance between the impeller and the
friction disk is approximately .012 - .020 inches (.304 -
.508 mm.)
2. If impeller is defective or badly worn, replace impeller imme-
diately.
Figure 11. Checking Hydraulic Oil
FILL WITH 10 WEIGHT NON-
DETERGENT HYDRAULIC
OIL. USE SHELL TURBO 32
OR EQUIVALENT.
FILL TO 75-80% CAPACITY
SEE TABLE 1 FOR FILLING
CAPACITY.
REMOVE FILL PLUG, AND
VISUALLYINSPECT THAT
OIL CAVITY IS FULL ENOUGH
TO COVER SEAL SPRING.
CHECK HYDRAULIC OIL
EVERY 300 HOURS. CHANGE
EVERY 6 MONTHS OR AS
NEEDED.
DISCOLORATION OF OIL
(MILKY) INDICATES A LEAKING
PUMP WATER SEAL.
S-500
S-500
POSITION
PUMP UPSIDE
DOWN
STEP 1
STEP 2
REMOVE
STRAINER
REMOVE
CASING
STEP 3
REMOVE
IMPELLER
STEP 4
REMOVE
LINER
STEP 5
CASING
COVER
OIL
CAVITY
REMOVE
OIL PLUG
AND
PACKING
STEP 6
