Engines Engine Starting Cummins IMPORTANT: Ring gear and starter pinion damage caused by improper starting procedures is not warrantable. NOTE: Before starting the engine, read Chapter 3 in this manual for detailed information on how to read the instruments and operate the controls. 1. Before engine start-up, perform the engine pretrip inspection and daily maintenance checks in Chap- ter 9 of this manual. 2. Set the parking brakes. CAUTION 3. Set the throttle to idle. Hold the clutch pedal (ve- hicles with manual transmissions). When starting a vehicle equipped with a manual transmission and clutch lock out switch, the clutch pedal must be fully depressed during the entire start sequence.
Failure to do so can cause the pin- ion to release and re-engage, which could cause ring gear and starter pinion damage. CAUTION Protect the turbocharger during the start-up by not opening the throttle or accelerating the engine above 1000 rpm until normal engine idle oil pres- sure registers on the gauge. If a vehicle does not start on the first attempt, make sure that the engine has completely stopped rotat- ing before reapplying the starter switch. Failure to do so can cause the pinion to release and re- engage, which could cause ring gear and starter pinion damage. 4. For manual transmissions, make sure the transmis- sion is in neutral.
For automatic transmissions, make sure the transmission shift control is in Neu- tral or Park. Moving a vehicle with the starter and/or using the starter to bump the engine for maintenance proce- dures is strictly prohibited. Use of these methods to bump the engine over or move the vehicle can cause the pinion to release and re-engage, which could cause ring gear and starter pinion damage. If the outside temperature is 60°F (16°C) or higher: keep your foot off the throttle pedal during the first five seconds of cranking the engine; if the engine does not start in that time, apply full throttle while cranking. 4.1