Product Support Program For The Calibration Of The Electronic Speed Switches On Certain 3406, 3408 And 3412 Industrial And Generator Set Engines Caterpillar

NOTE: The information supplied in this service letter may not be valid after the termination date of this program. Do not perform the work outlined in this Service Letter after the termination date without first contacting your Caterpillar product analyst.

NOTE: This Program can be administered either before or after a failure. In either case the decision whether to apply the Program is made by the dealer. When reporting the repair, use "PS8089" as the Part Number and "7755" as the Group Number. If administered before failure, use "56" as the Warranty Claim Description Code and use "T" as the SIMS Description Code. If administered after failure, use "96" as the Warranty Claim Description Code and use "Z" as the SIMS Description Code.

Termination Date

Problem

The electronic speed switches on engine-mounted electric shutoff junction boxes may need to be calibrated on certain 3406, 3408 and 3412 Industrial and Generator Set Engines.

Affected Product
Model & Identification Number

3406 (2WB11462, 2WB11476, 2WB11484, 2WB11486, 2WB12194, 6TB09847 )

3408 (78Z4603, 78Z4852, 78Z4854, 78Z4856-4857, 78Z4916, 78Z4918, 78Z5095, 78Z5098; 67U15393 , 67U15539, 67U15541, 67U16389)

3412 (81Z13127, 81Z13131, 81Z13194, 81Z13198, 81Z13263, 81Z13272, 81Z13535, 81Z13626, 81Z13641, 81Z13652, 81Z13949, 81Z13968-13969, 81Z13971, 81Z13975, 81Z13977, 81Z14015, 81Z14335, 81Z14670, 81Z14829, 81Z15213, 81Z15216, 81Z15308, 81Z15390, 81Z15392, 81Z15398, 81Z15404, 81Z15407, 81Z15409, 81Z15479, 81Z15481-15483, 81Z15493, 81Z15519, 81Z15534, 81Z15553, 81Z15582; 38S15896 , 38S15905, 38S16817, 38S16852)

Parts Needed

Does not apply

Action Required

Calibrate electronic speed switch for crank termination, oil step, and overspeed as described in either Troubleshooting Guide (ETS), SENR3202, or Troubleshooting Guide (ETR), SENR3207. When calibration is completed, seal the switch cover shut using 2 dm (8 in) of 5P6025 Lock Wire and a new seal.

Service Claim Allowances

NOTE: This is a 1-hour job.

Parts Disposition

Handle the parts in accordance with your Warranty Bulletin on warranty parts handling.