Teikoku Electric Reverse Circulation Pump R42-215C4DM-0405S1-A

Pre-Disassembly Safety Measures

Ensure all valves are fully closed

Disconnect the power cables from the connection box

Drain pump according to end user specific procedures

Insert bracing under piping to account for potential piping loads

Remove anchor bolting to slide pump out of piping

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.

Use a small brush or pointed tool for inaccessible areas.

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.

Inspect thrust face for scratches and chips

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

Check dimension after bearing has been removed

Inspect wear inside of bearing bore

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

Inspect the rotor assembly shaft sleeves and thrust surfaces for the following issues

Is there excessive undercutting, pitting, or scoring?

Do the shaft sleeves and thrust surfaces require replacement?

Describe the general appearance and uniformity of wear