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PAGE 18 — ST2037,47, 47B, 38P, 40T SUB. PUMPS — OPERATION AND PARTS MANUAL — REV. #3 (06/15/10)
For Model ST2037, ST2047, ST2047B and ST2038P:
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. Check pump oil at oil cavity plug (Figure 11). Check every 300
hours and 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. Discolored
milky oil indicates a failure of the water seal. If this occurs,
replace water seal.
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 mechanical seal oil capacity.
IMPELLER
1. If impeller is defective or badly worn, replace impeller imme-
diately.
ST2037, 47, 47B, 38P, 40T SUB. PUMP
—
CLEAN-UP AND MAINTENANCE
Pump Shut-Down/Clean-up
1. Remove the power from the pump by turning off the circuit
breaker or switch that provides power to the pump. Remem-
ber to make sure that hands are dry (not wet), and feet are not
standing in water when removing disconnecting power from
the pump.
2. Using the lifting rope, lift the pump up from its current position.
Remove the discharge hose from the discharge port on the
pump.
3. Remove all power cables and float switches from the control
box. Place cables and float switches in a suitable container
where they will not get damaged.
4. If the pump was used to pump mud, grit or silt, flush vigorously
with clean water.
5. Remove the pump from the water. Wipe off any mud or debris
that might have attached itself to the pump.
6. Store pump in a clean dry place away from dirt and debris.
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.
For Model ST2040T:
1. Position pump upside down.
2. Remove casing.
3. Remove the pump impeller.
4. Remove the oil plug and packing.