TM-5-4310-389-14
3-4 FILLING/CHECKING ENGINE OIL LEVEL.
CAUTION
Check the lubricating oil prior to starting to ensure sufficient engine oil for the start.
To check the oil level accurately, it is necessary to shut down the engine after about one minute of operation; the entire
oil system will be filled. Therefore, an immediate oil level check will then show the oil sump filling volume actually
available during operation of the engine. It is recommended to carry out this double check of the oil level before any
prolonged engine operation, particularly if the check prior to the engine start discloses an oil level in the vicinity of the
lower or minimum mark on the dipstick. Normally, new engines have a higher oil consumption. During the running-in
period (about 200 running hours), it is therefore essential to check the oil level twice a day. After the running-in period,
one check per day is sufficient.
a.
Engine must be in horizontal position and shut down.
b.
Pull out dipstick.
c.
Wipe with a clean, non-fraying rag.
d.
Reinsert as far as it will go, then withdraw again.
NOTE
Where engines are inclined, oil level should reach top mark of dipstick.
e.
The oil level should be between the marks on the dipstick (figure 3-2). If the level is only up to or even below the
lower mark, immediately top off with oil (fill through filler neck, figure 3-3), preferably up to the upper mark, in order
to prevent serious damage to the engine.
Figure 3-2. Oil Dipstick
Figure 3-3. Filler Neck
3-2
