Background

Performing a careful visual inspection when a motor comes into your shop will give you an estimate of how long the job will take and whether assistance from another shop will be needed. This will not only help you as the shop technician or shop supervisor, but will give the customer the feeling that his piece of gear is in competent hands.

• Ship's name
• Unit Identification Code (UIC)
• Workcenter
• J.S.N.
• Date
• Other information, as required

Give applicable sections of the tag to the person who delivered the motor.

Obtain background information

Does the motor have a history of frequent failures? If so, are the failures normally mechanical or electrical? Has maintenance been recently performed on the motor or the driven unit by ship's force or an IMA prior to the malfunction? What action, if any, was taken by ship's force when the malfunction was first discovered?

Quality Assurance Package

Complete applicable portions of the Quality Assurance Package. The Quality Assurance Package provides space for most of the information on the shipping tag plus any documents that were delivered with the motor.

Visual Inspection

A representative of the tended ship must witness the inspection and, if applicable, sign the completed inspection sheet.

Visually inspect the outside of the motor for the following and other defects.

• Loose or broken parts. A loose bolt may be stripped.
• Distortion of end bells indicated by a gap at the mating surface
• Cracked, bent, or welded bearing caps
• Loose or missing bolts or bolts of the wrong size or material

Distorted or misaligned end bells can cause rotors to bind.

Use the motor overhaul sheet or comparable form every time a unit comes into the shop. Do NOT hesitate to record the conditions as they are.

While making the visual inspection, note conditions in the appropriate section of the Quality Assurance Package.

If the rotor bumps or binds when it is rotated, omit the runout measurement.