Ignition System Timing - Check/Adjust
如果更换了 ECM 且没有使用复制配置功能，则必须进行发动机正时标定。 另外，如果未在发动机的前齿轮系上进行该工作，则必须标定正时。
偏置通过 Cat 电子技师（ET）编程到电控模块（ECM）中。
使用发动机转速 / 正时传感器来检测凸轮轴的扭矩控制。 提供该信号给 ECM。
执行系统操作故障排除测试和调整, KENR9788, "点火正时 - 调整"中所述的步骤。
Caterpillar Information System:
621H, 623H and 627H Wheel Tractor-Scrapers Braking and Hydraulic Fan System Operational Checks
C13, C15, and C18 Tier 4 Final Engines Engine Oil Pan
D6N Track-Type Tractor Hydraulic System Location of Electrical Components
D6K2 Track-Type Tractor Plate Locations and Film Locations
988H Wheel Loader Electrohydraulic System MID 082 - CID 0360 - FMI 06
988H Wheel Loader Electrohydraulic System MID 082 - CID 0360 - FMI 05
988H Wheel Loader Electrohydraulic System MID 082 - CID 0360 - FMI 03
992K Wheel Loader Object Detection Sensor - Clean/Inspect
D6K2 Track-Type Tractor Additional Messages
3516B Engine for 994F and 994H Wheel Loaders Throttle Lock - Test
992K Wheel Loader and 854K Wheel Dozer Machine Systems Window Wiper and Wiper Motor (Front Quarter)
980K Wheel Loader Power Train Modulating Valve (Transmission Clutch)
D3K2, D4K2 and D5K2 Track-Type Tractor Systems Charge Relief Valve - Test and Adjust
D6K2 Track-Type Tractor Declaration of Conformity
980K Wheel Loader Electronic Control Module (ECM) - Configure
D6K2 Track-Type Tractor Mounting and Dismounting
980K Wheel Loader Machine Electronic Control System General Information
992K Wheel Loader Axle Breaker Relief Valve - Clean
980K Wheel Loader Power Train Transmission Hydraulic Control Operation
621H, 623H and 627H Wheel Tractor-Scrapers Braking and Hydraulic Fan System Machine Preparation for Troubleshooting
621H, 623H and 627H Wheel Tractor-Scrapers Engine Supplement Belt Tensioner - Remove and Install - Tractor
621H, 623H and 627H Wheel Tractor-Scrapers Engine Supplement Water Temperature Regulator - Remove and Install - Tractor
621H, 623H and 627H Wheel Tractor-Scrapers Braking and Hydraulic Fan System Visual Inspection
621H, 623H and 627H Wheel Tractor-Scrapers Braking and Hydraulic Fan System General Troubleshooting Information