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ST-2005 SERIES SUBMERSIBLE PUMPS — OPERATION & PARTS MANUAL — REV. #3 (09/21/04) — PAGE 19
ST-2005 SERIES SUB. PUMP — MAINTENANCE
LUBRICATION
To check the oil level of the mechanical seal perform the
following:
1. Lay the pump (Figure 11) on its side with the oil plug facing
upwards.
2. Remove oil fill plug.
3. 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.
4. 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.
5. 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