JUKI LU-1510N Engineer's Manual page 41

Adjustment Procedures
2) In case of automatic lubrication
1. Insert the projection located at the bottom of oil tank 1 into
the waste oil hole of the oil pan.
2. Insert oil pipe 2 into filter 3 of the oil tank and fix the pipe with
a clip.
3. Pour the JUKI New Defrix Oil No. 2 into the oil tank 1 until
HIGH level is reached.
4. Add the same lubricating oil up to HIGH level as soon as the
oil level has come down to LOW level.
5. After the lubrication, you can see from oil sight window located
at the top surface of the machine arm !4 that the oil rises
upwhen the operstion is normal.
(However, the machine should run at 1,500 rpm or more.)
™ Adjusting the amount of oil in the hook
1. Loosen nut 5 and turn oil amount adjustment screw 4.
Turning the screw clockwise A will decrease the amount of oil
in the hook or counterclockwise B will increase it.
2. The appropriate amount of oil, when a sheet of paper is placed
near the periphery of the hook, is to such an extent that
splashes of oil from the hook appear in approximately five
seconds as shown in the figure on the left.
(Caution) 1. Approximately once a month, clean the oil tank
1 and the filter case.
2. If the filter 3 is clogged with soil, lubrication
fails resulting in trouble.
™ Cleaning the oil tank
1. Remove the oil pipe 2 from oil tank 1.
2. Remove butterfly nut 6 and take out cover (upper) 7, filter 8
and cover (lower) 9 to clean the oil tank.
3. Remove filter case setscrews !0 , and clean filter element !1
located on the inside of the filter case and magnet !2 .
4. When replacing the oil in the oil tank, remove stopper !3 in the
oil tank 1. Then, the oil can be drained from the installing port
of the waste oil container in the oil pan.
After draining, securely set stopper !3 to the oil tank. When
taking out the oil tank 1, take it out after draining the oil.
5. Fix the filter case in which filter element !1 and magnet !2 are
placed to cover (upper) 7 with setscrews !0 .
6. Place cover (lower) 9, filter 8 and cover (upper) 7 in orderin
the oil tank 1, and fix them with butterfly nut 6.
7. Insert the oil pipe 2 into the oil tank 1 and fix it with a clip.
Fill the oil tank with JUKI New Defrix Oil No. 2 up to HIGH
level.
Results of Improper Adjustment
When the amount of oil is short
™ Loose stitches will result.
™ Hook is heated resulting in
seizure.
When the amount of oil is too much
™ Thread is stained with oil. In
addition, the cloth may be
stained.
™ Trouble of sewing will be
caused.
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