Freightliner maintenance manual STI-409-2 for Columbia CL112 and CL120 trucks. It covers schedules I to IV, IM and M1 to M3 intervals, and the lube and inspection steps for engine, drivetrain, chassis, brakes and HVAC.
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STI-409-2 (February 2010) is written for the Freightliner Columbia CL112 and CL120. The CL120 has the 120-inch BBC and runs mostly long haul. The shorter CL112 was added in 2003 for regional, bulk and LTL work.
Pick your duty type first: Schedule I (severe service), II (short haul) III (long haul) or IV. The tables then tell you what to check at each interval, and each job has a reference number that points to the step-by-step instructions.
Engines, transmissions and rear axles also have their own maker manuals. Follow those intervals too. 122 pages.
| Publication | STI-409-2 (Feb 2010) |
|---|---|
| Models | CL112, CL120 |
| Truck Line | Columbia |
| Schedules | I, II, III, IV |
| Intervals | IM, M1–M3 |
| Pages | 122 |
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