Crane Pumps & Systems Pump SE544L

Set unit on its side with plug (44) upward

Enter the amount of new oil to refill as per Table 1

Refill with new oil as per Table 1

Apply pipe thread compound to threads of pipe plug (44)

Assemble pipe plug (44) to outer seal plate (29)

Drain oil from motor as outlined in paragraph F-1.1

Disassemble volute and impeller as outlined in paragraph F-2.1

Disassemble shaft seal as outlined in paragraph F-3.1

Position unit upright using blocks to avoid resting unit on shaft

Unscrew cable hex bolts and remove compression flange and power cord

Remove snap ring with a flat head screwdriver

Pull the terminal block out of the housing using a T-bolt or pair of pliers and a .25-20 screw

Leave slack on the motor leads connected underneath

Place pump on its side and remove pipe plug (39) from motor housing (6) to drain oil into a clean, dry container.

Check oil for contamination using an oil tester with a range to 30 Kilovolts breakdown.

Is the oil clean and uncontaminated?

Refill the motor housing as per section F-1.4.

Inspect for leaks at the following locations before refilling with oil

Perform a pressure test as per section F-1.3 to locate the leak.

Remove hex bolts and lockwashers

Lift motor and seal plate assembly from volute

Clean out volute body if necessary

Clean and examine impeller for pitting or wear

Is the impeller in good condition?

Inspect gasket for cuts or damage

Does the impeller need replacing?

Disassemble volute and impeller

Remove retaining ring, spring, and rotating member from shaft

Examine all seal parts and contact faces for wear

Is there any sign of wear such as uneven wear pattern or scratches?

Remove stationary member if replacing seal

Remove socket head cap screws, outer seal plate, and square-ring for inner seal inspection (DS Units Only)

Remove snap ring, retaining ring, spring, and rotating member from shaft for inner seal inspection (DS Units Only)