94 Heavy-Duty Service Schedule for VHD-Series
Category C: Additional Service Points
1 Do the maintenance points as de-
scribed under Categories A and B.
2 Standard antifreeze should be changed
every 4,000 hours. (See page 122 or
page 124.)
3 Extended life antifreeze should have
an extender package added at 3,000
hours and then changed at 6,000
hours. (See page 122 or page 124.)
4 Check coolant thermostat function ev-
ery 2,000 hours.
5 Pressure test injectors or adjust height:
•
Volvo D7: Every 12 months or
2,000 hours.
•
Volvo D12: No recommendation.
•
Cummins: Every 21 months or
3,800 hours.
•
Detroit Diesel: Every 21 months
or 3,800 hours
6 Check and adjust valves on the engine:
•
Volvo: Every 12 months or 2,000
hours.
•
Cummins: Every 21 months or
3,800 hours.
•
Detroit Diesel: Every 21 months
or 3,800 hours.
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