Electronic Control Module (ECM) - Replace
更换 ECM 之前，先确保更换是绝对必要的。 ECM 不太可能是故障的原因。 务必检查并确认已向 ECM 供电。 要求 ECM 机器线束接头的触点 J1-1 与 J1-2 之间有蓄电池电压。 只有所有其它尝试隔离出故障的方法失败后再继续进行。 一定要咨询您代理商的技术通信员，征求 Caterpillar 可能的意见。 这个咨询可以大大减少修理所需的时间。
- 将断路开关和钥匙起动开关转至断开位置。 从 ECM 上断开机器线束。
- 拆下 ECM。
- 确保更换用 ECM 的零件号正确。
- 将机器线束与 ECM 相连。
- 安装更换的ECM。
Caterpillar Information System:
784C, 785B, 785C, 785D, 789B, 789C, 789D, 793B, 793C, 793D, 797 and 797B Off-Highway Trucks VIMS ™ Electrical Component and Connector Locations
TH210 and TH215 Telehandlers Towing the Machine
740 and 740 EJECTOR Articulated Trucks Power Train Transmission Shift Points - Test
CP-663E, CS-663E and CS-683E Vibratory Compactors Machine Systems Axle Guard - Remove and Install
735, 740 and 740 EJECTOR Articulated Trucks Machine Systems Gear Pump (Hoist) - Install
69D, 769D , 773D, 773E, 776D, 777D, 784C, 785C, 785D, 789C, 789D, 793C and 793D Off-Highway Trucks and 771D, 775D and 775E Quarry Trucks Braking System Using Caterpillar Monitoring System to Determine Diagnostic Codes
446B Backhoe Loader Transmission (Autoshift) Transmission and Torque Converter - Test
69D, 769D , 773D, 773E, 776D, 777D, 784C, 785C, 785D, 789C, 789D, 793C and 793D Off-Highway Trucks and 771D, 775D and 775E Quarry Trucks Braking System Using Vital Information Management System to Determine Diagnostic Codes
793B Off-Highway Truck Power Train Visual Inspection (Power Train)
2001/07/30 New Assembly Instructions for Rod Seals on Hydraulic Cylinders are Available {7562}
769D Off-Highway Truck/Tractor and 771D Quarry Truck Engine Oil and Filter - Change
TL2 Series In-Line Rippers Shear Bolt - Replace
M313C, M315C, M316C, M318C, M318C MH, M322C and M322C MH Excavators Electronic System Glossary of Terms
PM-465 Cold Planer Conveyor Controls
2001/08/06 The Enclosure for the Brake Linkage Has Been Improved {4250}
TH210 and TH215 Telehandlers Engine Starting
Product Link 151/201 Wiring Harness (Open Circuit) - Test
37-MT, 41-MT, and 42-MT Series Starting Motors Pinion Clearance - Adjust
2001/07/09 The Bolt that Attaches the Gear Shroud Assembly to the PTO case Has Been Lengthened {3107}
69D, 769D , 773D, 773E, 776D, 777D, 784C, 785C, 785D, 789C, 789D, 793C and 793D Off-Highway Trucks and 771D, 775D and 775E Quarry Trucks Braking System Using Caterpillar Electronic Technician to Determine Diagnostic Codes
69D, 769D , 773D, 773E, 776D, 777D, 784C, 785C, 785D, 789C, 789D, 793C and 793D Off-Highway Trucks and 771D, 775D and 775E Quarry Trucks Braking System Diagnostic Code List
A New Topcon<COMP-BREAK TAGNAME=cp850>©<COMP-RESUME> System Five Control and A New Mounting Bracket Are Available to Replace the Topcon<COMP-BREAK TAGNAME=cp850>©<COMP-RESUME> System Four Control{7000, 7220} A New Topcon<COMP-BREAK TAGNAME=cp850>©<COMP-RESUME> System Five Control and A New Mounting Bracket Are Available to Replace the Topcon<COMP-BREAK TAGNAME=cp850>©<COMP-RESUME> System Four Control{7000, 7220}
3176C, 3196 and 3406E Engines for 725, 730, 735, 740, and 740 Ejector Articulated Trucks Compression Brake Solenoid Circuit - Test
TK1051 Track Feller Buncher Machine Systems Main Hydraulic Pump Air Pressure - Purge