SB_4-4006

GE Power & Water

SAFETY ALERT: Failure to comply with this safety alert could result in personal injury or equipment damage. All field sites should be inspected and, if necessary, corrected as soon as feasible.The purpose of this bulletin is to reinform the field andclarify the required inspection and replacementintervals of the rubber flex connectors. Coolant leaksat the rubber flex connectors have been reported onsome APG 2000/3000 Enginators (see Figure 1 andFigure 2). These leaks can be prevented by inspectingand replacing the rubber flex connectors at the properintervals.

Inspect the rubber flex connectors every 3,000 hours.Acceptance should be based on but not limited to thefollowing:

• Any signs of leakage

• Any signs of degradation or splitting of the outerrubber flex connectors

• Any hardening of the rubber flex connectors

• Any signs of separation between the rubber flexconnectors and metal flange

• Any bulging or deformation in the shape of therubber flex connectors

• A running service life of 12,000 hours

• A service life of 5 years independent of running time

If any of the preceding conditions are present (seeFigure 3 and Figure 4 for examples), replace the flexconnectors at the first opportunity. It is highlyrecommended that all rubber flex connectors arechanged when any one shows degradation.

As is general good practice:

• Make sure that the engine room ventilation systemand all safety systems are working properly.

• Do not enter the engine room of a running engineunless it is necessary.

• Follow all GE Waukesha and site-specific safetyprecautions including using proper personalprotection equipment.

Waukesha* gas engines TOPIC: Cooling SystemSAFETY ALERT

IDENT NO: 4-4006DATE: August 2014

SUPERSEDES: New

SUBJECT: Required Inspection/Replacement of Rubber Flex Connectors

MODELS AFFECTED: All APG 2000/3000 Enginators

APG*APG*

Page 1 of 3Service Bulletin 4-4006© 8/15/2014

* Trademark of General Electric Company

Service Bulletin No. 4-4006

Figure 1: Locations of the Rubber Flex Connectors

PART NO. QUANTITY REQUIRED DESCRIPTION

3341813 6 HOSE, Flexible

Page 2 of 3Service Bulletin 4-4006© 8/15/2014

Service Bulletin No. 4-4006

Figure 2: Locations of the Rubber Flex Connectors

Figure 3: Deformed Bellows

Figure 4: Damaged Area

PART NO. QUANTITYREQUIRED DESCRIPTION

325257 2 HOSE, Flexible

Page 3 of 3Service Bulletin 4-4006© 8/15/2014