User Manual

MAINTENANCE
Install the new filters, turning them
until they contact the gasket f ully with
no side movement. Turn full-flow
filters an additional 2/3 tur n by
hand, or as indicated on the filter.
See Figure 16.
Figure 16 Lubricating Oil Filters
Make a visual check of all lubricating
oil lines for wear and/or chafing. If
any indication of wear is evident,
replace the oil lines and correct the
cause.
Check for oil leaks after starting the
engine.
Item 12 – Fuel Filters
One method of determining whe n
filters are plugged to the extent that
they need replacing is based on the
fuel pressure at the cylinder head fuel
inlet fitting and the inlet restricti on
at the fuel pump. In a clean system
the maximum pump inlet restriction
should not exceed 6 inches of mercury
(20.3 kPa). In a dirty system it must
not exceed 12 inches of mercury
(41 kPa).
At normal operating speed and w ith
the standard .080 inch restriction
fittings, the fuel pressure is 55 – 70
psi (375 – 483 kPa). Change th e fuel
filters whenever the inlet restriction
at the pump reaches 12 inches of
mercury (41 kPa) at normal operating
speeds and whenever the fuel pressure
at the inlet fitting falls to the minimum
fuel pressure of 6 inches of mercury
(20.3 kPa).
NOTE:
Filter change intervals may be
shortened to conform with established
preventive maintenance schedules,
but shoul d never be extended.
Fuel Pro® 382 Filters — Install
new Fuel P ro® 382 primary fuel filter
elements when the fuel level in the
see-thru cover reaches the top of the
element or after one year of service,
whichever comes first.
Spin-On Filters — Install new
spin-on primary and secondary fuel
filter elements on vehicle engines
every 15,000 miles (24,000 km) or
76 All information subject to change without notice. (Rev. 01/04)
DDC-SVC-MAN-0058 Copyright © 2004 DETROIT DIESEL CORPORATION