Engine Systems
DETROIT DIESEL
Spin-On Type Fuel Filter
2. Fill a new filter replacement cartridge about two
thirds full with clean fuel oil. Coat the seal gasket lightly
A spin-on fuel strainer and fuel filter is used on certain
with clean fuel oil.
engines. The spin-on filter cartridge consists of a shell,
element and gasket combined into a unitized
3. Install the new filter assembly and tighten it to two
replacement assembly. No separate springs or seats
thirds of a turn beyond gasket contact.
are required to support the filters.
4. Start the engine and check for leaks.
The filter covers incorporate a threaded sleeve to accept
the spin-on filter cartridges. The word "Primary" is cast
Fuel Tank
on the fuel strainer cover and the word "Secondary" is
cast on the fuel filter cover for identification.
Refill the fuel tank at the end of each day's operation to
prevent condensation from contaminating the fuel.
No drain cocks are provided on the spin-on filters.
Where water is a problem, it is recommended that a
water separator be installed. Otherwise, residue may be
CAUTION:A galvanized steel tank
drained by removing and inverting the filter. Refill the
should never be used for fuel storage
filter with clean fuel oil before reinstalling it.
because the fuel oil reacts chemically
with the zinc coating to form powdery
A 1 "diameter twelve-point nut on the bottom of the filter
flakes which quickly clog the fuel
is provided to facilitate removal and installation.
strainer and filter and damage the fuel
pump and the fuel injectors.
Replace the filter as follows:
1. Unscrew the filter (or strainer) and discard it.
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