I have an Cat 928F wheel loader that won't crank when the temperature drops in the single digits When this happens I can turn the ignition switch to on position and jump the starter solenoid with a remote switch to get it started. We have already replaced both solenoids and the starter circuit breaker. I was wondering if there is another relay that is in the system that is temperature sensitive? I can not locate a wiring diagram for it.

Doug Garner
Technician
Feasel's Grounds Maintenace
Findlay, Ohio, USA