General Information 00 Scheduled Maintenance Intervals, Description and Use: 00–05 Description Use Schedule I (severe service) applies to vehicles that annually travel up to 6000 miles (10 000 kilometers) or that operate under severe conditions. Examples of Schedule I usage include: operation on extremely poor roads or where there is heavy dust accumula- tion; constant exposure to extreme hot, cold, salt-air, or other extreme climates; frequent short-distance travel; construction-site operation; city operation (fire truck, garbage truck); or farm operation. Before placing your new vehicle in service, determine the correct maintenance intervals that apply to your intended use of the vehicle.
Refer to the Mainte- nance Schedule Table to determine the distance (or hour) interval at which each Maintenance Operation Set must be performed to comply with your vehicle’s schedule. For Schedule I vehicles equipped with an hourmeter, use hours to determine maintenance in- tervals, rather than distance traveled. Schedule II (short-haul transport) applies to vehicles that annually travel up to 60,000 miles (100 000 kilo- meters) and operate under normal conditions. Ex- amples of Schedule II usage are: operation primarily in cities and densely populated areas; local transport with infrequent freeway travel; or high percentage of stop-and-go travel.
When the vehicle reaches the actual distance (or hours) given for an interval, refer to the Maintenance Interval Tables to find the Maintenance Operation Set that applies to that interval. Then perform the mainte- nance operations listed in the applicable Mainte- nance Interval Operation Table. Use the maintenance operation reference numbers to find instructions in the manual for completion of each operation. Schedule III (long-haul transport) is for vehicles that annually travel more than 60,000 miles (100 000 kilo- meters), with minimal city or stop-and-go operation. Examples of Schedule III usage are:
regional delivery that is mostly freeway miles; interstate transport; or any road operation with high annual mileage. Complete each Maintenance Operation Set at the required interval. Then, when you have completed Maintenance Operation Set M5 under the 32nd Main- tenance Number listed in the Maintenance Interval Table, repeat the pattern. The 33rd Maintenance Number will begin at Maintenance Operation Set M1, under the 1st Maintenance Number listed in the Maintenance Interval Table. The table under Maintenance Schedule Table shows three different schedules of vehicle usage.
For each schedule the appropriate distance interval is given for performing Initial Maintenance and for re- peating each maintenance operation set (M1 through M5). For Schedule I, the appropriate time interval is also given. NOTE: When performing operations for the 33rd Maintenance Number, complete the M1 opera- tions only, not the Initial Maintenance opera- tions. The tables under Maintenance Interval Tables show which maintenance operation set must be performed at the actual distances (miles and kilometers) for each maintenance schedule (or the actual hours of operation for Schedule I).
The schedule of actual dis- tances (and hours) is based on the intervals given in the Maintenance Schedule Table. To determine the distance/hours for the 33rd Mainte- nance Number, add your schedule’s distance/hours for the 1st Maintenance Number to the distance/hours for the 32nd Maintenance Number, then perform the operations listed in the applicable table in the Maintenance Operations Tables. For the 34th Maintenance Number, add the distance/hours for the 2nd to the distance/hours for the 32nd; con- tinue this pattern for each successive Maintenance Number.
The tables under Maintenance Operation Sets Tables list, in numerical order, the text reference numbers and descriptions of all maintenance opera- tions, and indicates all maintenance operation sets at which each operation must be performed. Each Maintenance Interval Operations Table (IM through M5) lists the appropriate text reference numbers and descriptions of only those maintenance operations that must be performed at that mainte- nance operation set. Each maintenance operation set is listed in a separate Maintenance Operations Table. Business Class Trucks Maintenance Manual, February 2004 00/7