Inaccurate Hour Meter Reading on Electronic Monitoring System III (EMS III) Used on Certain Off-Highway Trucks{7478, 7490} Caterpillar

Off-Highway Truck/Tractor:

773E (S/N: ASK1-UP)

777D (S/N: FKR1-UP)

Introduction

The problem that is identified below does not have a known permanent solution. Until a permanent solution is known, use the solution that is identified below.

Problem

The hour reading shown on Electronic Monitoring System III (EMS III) is low compared to the hour reading for engine.

Solution

For situations, where EMS III display hours reset to zero or if the hours displayed are vastly different from actual hours, replace the 428-8530 Monitor Software Gp with former 326-7396 Monitor Software Gp .