Automatic Shift Function
When the auto/manual switch is in the AUTO position, the ECM automatically upshifts the transmission and the ECM automatically downshifts the transmission. An automatic upshift is not possible to a gear that is higher than the gear that is selected by the operator. There is no automatic downshift from gear 2 to gear 1. To downshift from gear 2, the downshift switch must be pressed or gear 1 must be selected with the shift lever.
When the downshift switch is pressed momentarily, the ECM downshifts the transmission by one gear. If the downshift switch is held depressed, the ECM will continue to downshift the transmission as machine speed decreases. After the downshift switch is released, the ECM waits for five seconds before resuming automatic shifting.
Caterpillar Information System:
IT28G and IT38G Integrated Toolcarriers and 924G, 924GZ, 928G and 938G Wheel Loaders Power Train Electronic Control System Manual Shift Function
PF-300B and PS-300B Pneumatic Compactors Propel System Differential Lock - Check
TH103 Telehandler Tire Ballast
2014/08/11 Diagnostic Cables and Harnesses Are Available {0785}
2000/07/31 Correction to Parts Manual for R2900 LHD {3034}
2000/08/07 Revision to Parts Manual for R1300 LHD {3168, 4808, 4820}
2000/08/28 Slide Plates Are Now Available for Wheel Harvesters {6501, 6502, 6533}
IT28G and IT38G Integrated Toolcarriers and 924G, 924GZ, 928G and 938G Wheel Loaders Power Train Electronic Control System General Information
2000/08/07 The Temperature Switch for the Transmission Has Changed {7413}
2000/08/07 Revision to Parts Manual for R1300 LHD {5057, 7554}
2000/07/31 An Improved Mounting Bracket for the Steering Metering Pump On Machines With Wheel Steering Is Now Available {4312}
CB-334D and CB-335D Vibratory Compactors Warranty Information
2000/08/07 Revision to Parts Manual for the R1700G LHD {5073}
IT28G and IT38G Integrated Toolcarriers and 924G, 924GZ, 928G and 938G Wheel Loaders Power Train Electronic Control System Electronic Control Module (Autoshift)
2000/08/07 Revision to Parts Manual for the R2900 LHD {5073}
2000/07/31 Correction to Parts Manual for the R1300 LHD {7301}
2000/08/07 A New Engine Shutdown Switch is Available {7418}
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