Engine Oil Filter Service.
(b) Loosen the two cover screws; remove
(1) For engine model 687C-18-ES. The two
cover from both cases, then remove and discard used
filter element from both cases.
engine oil filters are located on left hand side of engine
(c) Remove three capscrews, lock-
at rear of cab. Service as follows:
(a) Refer to LO 5-3810-201-12 for correct
washers, and clamps, then remove both cases from
(d) Remove both gaskets from filter base.
spring, and gasket. Discard gasket.
(b) Remove pipe plug and drain filter.
(e) Clean all removed parts in an
(c) Remove and discard filter element.
approved cleaning solvent, dry thoroughly, then use a
cloth dampened with solvent and wipe all sludge from
(d) Clean cover, spring, and filter shell by
wiping away all sludge with a cloth wet in an approved
cleaning solvent, then dry thoroughly.
(e) Install pipe plug.
Discard all unserviceable gaskets.
(f) Insert new filter element in shell;
(f) Install drain plug in filter base; install
position gasket in cover, then install cover and spring on
serviceable gasket in both case grooves in filter base,
shell. Secure by tightening bolt.
then position cases on base and secure with clamp,
lockwasher, and capscrew (3).
(g) Install new filter element in both
Service remaining filter in a similar
cases, then position cover on case and secure with
(2) For engine model D333TA. These two
(3) All models. After engine oil filters are
filters are mounted on a common base that is installed
serviced fill crankcase; (LO 5-3810-201-12) start engine
on left hand side of engine. Service as follows:
(a) Refer to LO 5-3810-201-12 for
Inspect oil filters for leaks, then stop engine (para 2-11)
interval, then remove drain plug (fig. 3-5) and drain the
and check oil level. Add oil when necessary.
g. Engine Oil Strainer Service (Model 687C-18-ES
(3) Remove cover gasket and the element
spring, then lift filter element from housing. Discard
(4) Clean all parts in an approved cleaning
solvent and dry thoroughly.
(5) Visually inspect element spring for break or
other defect, such as loss of tension. Replace a
(6) Position filter element in housing; position
spring on filter element; position new gasket on cover,
then place cover on housing and secure with two
h. Chain Case Fill Cap and Breather Service.
(1) Refer to LO 5-3810-201-12 for interval,
cleaning solvent, and dry thoroughly with low pressure
(2) Inspect breather portion of fill cap for
damage to filter screen wire, and assure removal of all
(3) Replace a defective fill cap breather.
(4) Refer to current lubrication LO 5-3810-
Figure 3-4. Engine oil filter service for model
201-12 for instructions on changing of oil in chain case.