Teikoku Electric Reverse Circulation Pump R42-515C4DM-0707U1-A

Inspect thrust face for scratches and chips

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

Check wear inside of bearing bore

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

Preparation and Initial Assembly

Reassemble parts 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.

Visual Inspection of Rotor Assembly Shaft Sleeves and Thrust Surfaces

Inspect the general appearance of the shaft sleeves and thrust surfaces

Check for uniform wear at the bearing contact area

Is there excessive undercutting?

Check the following points for issues

Fully close valves in discharge, suction, reverse circulation and utility piping.

Disconnect the power cables from the connection box prior to disassembly.

Drain pump per end user specific procedures.

Insert bracing under piping to account for potential piping loads.

Remove discharge, suction and reverse circulation flange bolting.

Remove anchor bolting to slide pump out of piping.

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

Check thread direction on Teikoku Type-R (Plan 13-SE)

Mating Faces and Gasket Cleaning

Ensure all mating faces are free of nicks and burrs

Clean off any trace of old gasket material

Clean inaccessible areas with a small brush or pointed tool