Types of Service
Service Schedule
Service Conditions
Schedule IV
†
(Long-Haul Transport
for Optimized Vehicle
Configuration)
Vehicles that annually travel
over
60,000 miles (100 000 km)
and
meet the following
qualifications:
•
Meritor 15-1/2 inch dampened/ceramic Lite Pedal LTD clutch with sealed release bearing.
•
Synthetic transmission fluid used in transmission.
•
Meritor FF–961 or FF–981 front axle (12,000 lb. capacity) with synthetic lubricant.
•
Front suspension with maintenance-free rubber bushings for 12,000 lb. capacity suspen-
sion.
•
Meritor RPL series, or Dana Spicer SPL series driveline U-joints.
•
Synthetic lubricant used in rear axle.
•
Equipped with any Freightliner AirLiner suspension.
•
Equipped with Meritor Q-Plus extended-lube cam brakes and automatic slack adjusters,
front and rear.
•
Standard brake system package including Bendix AD-9 air dryer with heater, and a Bendix
air compressor.
•
TRW TAS65 power steering.
*
For Schedule I (severe service) vehicles equipped with an hourmeter, use maintenance intervals based on hours of operation rather than distance traveled.
†
Use Schedule I (severe service) maintenance intervals for vehicles that operate under severe conditions, such as extremely poor roads, heavy dust accumu-
lation, extreme climate, frequent short distance travel, construction-site operation, city operation (garbage truck), or farm operation.
Table 1, Types of Service
Service Schedule
Service Schedule
Maintenance Interval
Operation
Maintenance Interval
Frequency
Miles
km
Hours
Schedule I
(Severe Service)
Initial Maintenance (IM)
first
1000
1600
50
Maintenance 1 (M1)
every
1000
1600
50
Maintenance 2 (M2)
every
5000
8000
500
Maintenance 3 (M3)
every
15,000
24 000
1500
Schedule II
(Short-Haul Transport)
Initial Maintenance (IM)
first
10,000
16 000
—
Maintenance 1 (M1)
every
10,000
16 000
Maintenance 2 (M2)
every
50,000
80 000
Maintenance 3 (M3)
every
150,000
240 000
Schedule III
(Long-Haul Transport)
and
Schedule IV
(Long-Haul Transport for
Optimized Vehicle Configuration)
Initial Maintenance (IM)
first
25,000
40 000
—
Maintenance 1 (M1)
every
25,000
40 000
Maintenance 2 (M2)
every
100,000
161 000
Maintenance 3 (M3)
every
300,000
483 000
Table 2, Service Schedule
General Information
00
Determining Scheduled Maintenance Intervals: 00–01
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