BOLT 5D1972 - Caterpillar

Uninterruptible Power Supply: UPS 150 (S/N: CPC1-UP) ES12F (S/N: CZE1-UP) UPS 1000S (S/N: CZS1-UP) UPS 120 (S/N: CNK1-UP) UPS 1200S (S/N: CZT1-UP) UPS 250 (S/N: CNM1-UP; APZ1-UP) UPS 300 (S/N: CNJ1-UP; CPZ1-UP) UPS 301 (S/N: CSY1-UP) UPS 500 (S/N: CSE1-UP) UPS 600 (S/N: CTX1-UP) UPS 750 (S/N: CPM1-UP) UPS 900 (S/N: CRY1-UP)Introduction
The bearings should be replaced periodically. The recommended interval is estimated at 2 and 1/2 years. The bearings are contained in removable cartridges. The cartridges are replaced at the same time as the bearings. The cartridges must be accurately positioned for proper operation. Only trained personnel may perform the replacement.Note: The lower bearing and upper bearing are always changed as a set. The lower bearing is changed first. Then, the upper bearing is changed. The flywheel must be de-energized and the flywheel must be at zero rpm.Note: Shut down the System before attempting to remove the lower bearing. Refer to the Operation and Maintenance Manual, SEBU8145, "System Shutdown" for the proper shutdown procedure.Note: All firmware must be revision 3.56/3.59 or higher.Important Safety Information
Work safely. Most accidents that involve product operation, maintenance, and repair are caused by failure to observe basic safety rules or precautions. An accident can often be avoided by recognizing potentially hazardous situations before an accident occurs.A person must be alert to potential hazards. This person should also have the necessary training, skills, and tools in order to perform these functions properly.Safety precautions and warnings are provided in this instruction and on the product. If these hazard warnings are not heeded, bodily injury or death could occur to you or to other persons. Caterpillar cannot anticipate every possible circumstance that might involve a potential hazard.Therefore, the warnings in this publication and the warnings that are on the product are not all inclusive. If a tool, a procedure, a work method or operating technique that is not specifically recommended by Caterpillar is used, you must ensure that it is safe for you and for other people to use.You should ensure that the product will not be damaged or the product will be made unsafe by the operation, lubrication, maintenance or the repair procedures that are used.Load Cell
Note: Whenever the lower bearing is replaced, the upper bearing must be replaced as well.Removal Procedure
Illustration 1 g01932015
Flywheel with Lower Components (1) Flywheel (2) Plug (3) O-ring (4) Brass Shim Pack (5) Lower Bearing Cartridge (6) Spacer (7) Polished Retainer Bolt (8) Mounting Hardware (Screw) (9) Mounting Hardware (Washer) (10) Mounting Hardware (Discharge Drain) (11) Load Plate (12) Washer (13) Load Cell (14) Hex Bolt
Illustration 2 g01932133
Flywheel with Upper Components (2) Plug (19) Magnetic Rotor Position Sensor (RPS) Assembly Screw (20) Magnetic Rotor Position Sensor (RPS) PWA (21) Magnetic Rotor Position Sensor (RPS) O-ring (22) Polished Retaining Bolt (23) Rotor Wheel with Teeth (24) Bearing Cartridge Mounting Screw (25) Spacer (26) Upper Bearing Cartridge (27) Brass Shim Pack (28) O-ring
Table 1
Required Tools    
Qty    Part Number    Part Description    
4     190-8386     Shims    
2     191-5217