Teikoku Electric Reverse Circulation Pump R42-416C4DM-0708U1-A

Inspect the threads on both ends of the rotor shaft for damage

Thread type verification for Teikoku Type-R (Plan 13-SE)

Mating Faces and Gasket Material

Check mating faces for nicks and burrs

Clean off any trace of old gasket material

Visual Inspection of Rotor Assembly Shaft Sleeves and Thrust Surfaces

Inspect the bearing contact area for the following issues

Is there excessive undercutting, pitting, or scoring?

Do the shaft sleeves and thrust surfaces require replacement?

Provide recommendations based on the inspection results

Reassemble in the reverse manner of disassembly.

Rear Bearing Housing Installation

Install adjusting washer(s) into rear bearing housing.

Is the quantity and thickness of adjusting washers correct for proper rotor end play?

Insert bearing with flat washer into front and rear bearing housings.

Position flat washer side of bearing in line with set screw hole.

Ensure all valves are fully closed

Disconnect the power cables from the connection box

Drain pump per end user specific procedures

Insert bracing under piping to account for piping loads

Remove discharge, suction and reverse circulation flange bolting

Pump Removal and Casing Disassembly

Remove anchor bolting to slide pump out of piping

Inspect thrust face for scratches and chips

Refer to Figure 4-3 (L) for excess wear on thrust surface

Check for wear inside of bearing bore

Refer to Figure 4-3 (A-B) for guidance