User Manual

SERIES 50 OPERATOR'S GUIDE
every six months, whichever comes
first. SeeFigure17.
Figure 17 Spin-On Fuel Filter
Location
Install new spin-on filter elements
on non-v ehicle engines every 150
hours. Replace spin-on filter elements
immediately if plugging is indicated,
regardless of mileage or hour intervals.
Item 13 – Water Pump and
Coolan t Inhibitor E lement
Check the water pump and the coolant
inhibitor element.
Water Pump Drain H o le — The
water pump drain hole should be
inspected every 6 months to make
sure it is open. A small chemical
build-up or streaking at the drain hole
may occur. This is not an indication
of a defective water pump or seal.
Remove the build-up with a mild
detergent cleaner and a brush. If
coolant does not leak from the drain
hole under normal conditions, do not
replace the water pump.
Coolant Inhibitor Element — If
the cooling system is prot ected by a
supplemental coolant additive (SCA)
element, the coolant must be tested
at required i nterval s and the element
replaced, if required. See Figure 18.
Figure 18 Coolant Inhibitor
Element
Required test intervals are
listed in Table 25. For SCA test
procedures refer to How to Select
Coolant and then SCA Test Procedures
in this guide. Use the coolant filter
element required.
All information subject to change without notice. (Rev. 01/04) 77
DDC-SVC-MAN-0058 Copyright © 2004 DE TROIT DIESEL CORPORATION