Determining Scheduled Maintenance Intervals
Performing regular maintenance will help ensure that your vehicle delivers safe, reliable service and optimum performance. A proper maintenance program will also help to minimize downtime and safeguard warranties.
To determine the correct maintenance intervals for your vehicle, you must first determine the type of service or conditions the vehicle will be operating in. Most vehicles operate in conditions that fall within one of two schedules. Before placing your vehicle in service, determine which schedule applies to your vehicle.
Schedules
Schedule I (severe service) applies to vehicles that travel up to 6,000 miles (10,000 kilometers) annually or that operate under severe conditions. Examples of Schedule I usage are:
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operation on extremely poor roads or where there is heavy dust accumulation
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constant exposure to extreme hot, cold, salt air, or other extreme climates
-
frequent short-distance travel
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construction-site operation
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city operation such as fire truck and garbage truck.
-
farm operation
Schedule II (short-haul transport) applies to vehicles that travel 6,000 miles (10,000 kilometers) or more annually and operate under normal conditions. Examples of Schedule II usage are:
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operation primarily in cities and densely populated areas
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local transport with infrequent freeway travel
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high percentage of stop-and-go travel
Schedule lll (long-haul transport) applies to vehicles that travel more than 60,000 miles (100,000 kilometers) annually with minimal city or stop-and-go operation. Examples of Schedule lll usage are:
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regional delivery that is mostly freeway miles.
-
interstate transport
-
any road operation with high annual mileage
Maintenance Intervals
After determining the schedule appropriate to your vehicle, see Table. to determine when to perform the Initial Maintenance (IM) and the frequency of performing subsequent maintenance intervals for each schedule.
Maintenance Operations
This manual has an index at the beginning of each Group that lists the title and number of each maintenance operation (MOP) for that Group. Follow the instructions under the MOP number to perform the required maintenance.
In addition to the maintenance operations required for the maintenance interval, perform all daily, weekly, and monthly maintenance operations listed in Safety Precautions, "Pretrip and Post-Trip Inspections and Maintenance", of the 108SD and 114SD Driver's Manual.
Table 1, Maintenance Schedules
|
Maintenance Schedules |
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|
Schedule |
Maintenance Intervals |
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|
Maintenance Interval |
Frequency |
Frequency |
Frequency |
Frequency |
|
|
Schedule I1 (severe service) for vehicles that travel up to 6,000 miles (10,000 km) annually |
Initial Maintenance (IM) |
first |
1000 |
1600 |
100 |
|
Maintenance 1 (M1) |
every |
1000 |
1600 |
100 |
|
|
Maintenance 2 (M2) |
every |
4000 |
6400 |
400 |
|
|
Maintenance 3 (M3) |
every |
8000 |
12 800 |
800 |
|
|
Maintenance 4 (M4) |
every |
16,000 |
25 600 |
1600 |
|
|
Maintenance 5 (M5) |
every |
32,000 |
51 200 |
3200 |
|
|
Schedule II (short-haul transport) for vehicles that travel 6,000 miles (10,000 km) or more annually |
Initial Maintenance (IM) |
first |
8000 |
12 000 |
— |
|
Maintenance 1 (M1) |
every |
8000 |
12 000 |
||
|
Maintenance 2 (M2) |
every |
16,000 |
24 000 |
||
|
Maintenance 3 (M3) |
every |
32,000 |
48 000 |
||
|
Maintenance 4 (M4) |
every |
64,000 |
96 000 |
||
|
Maintenance 5 (M5) |
every |
128,000 |
192 000 |
||
|
Schedule III (long-haul transport) for vehicles that travel 60,000 miles (100,000 km) or more annually |
Initial Maintenance (IM) |
first |
25,000 |
40,200 |
— |
|
Maintenance 1 (M1) |
every |
25,000 |
40,200 |
||
|
Maintenance 2 (M2) |
every |
50,000 |
80,400 |
||
|
Maintenance 3 (M3) |
every |
50,000 |
80,400 |
||
|
Maintenance 4 (M4) |
every |
100,000 |
160,800 |
||
|
Maintenance 5 (M5) |
every |
300,000 |
482,400 |
||
- For Schedule I vehicles equipped with an hourmeter, use maintenance intervals based on hours of operation rather than mileage.