Technical Manual & Parts Lists
25
Lubrication
Machines of Class 300U have a semi-automatic lubricating system comprising of a hollow arm
shaft and a hollow bed shaft which act as oil reservoirs. The oil is distributed to all of the principal
bearings by centrifugal force through small jets in the shafts when the machine is in operation.
Provision is also made for hand lubricating other movable
parts which are not
lubricated from the reservoirs.
Caution:
User Singer Oil, “Type B” or “Type D”. Use “Type D”
oil when an oil is desired which will produce minimum stain
on fabrics even after long period of storage.
Do not use additives in sewing machine oil as they
may cause a reduction in the normal flow of oil that can result
in damage to the machine.
Before starting the machine, the machine must be
oiled as instructed. Failure to do this will result in damage to
the machine.
The Pressure Oil Can, furnished with the machine is to be used to oil all points requiring
lubrication.
To Oil the Arm Shaft
To fill the arm shaft reservoir, insert spout of the pressure oil can in hole, Fig. 4, and inject 1 shot
of oil into shaft twice daily.
To Oil the Bed Shaft
To fill the bed shaft reservoir, push the spring
cover, Fig. 5, to the left and insert spout of pressure oil
can into the hole and inject 1 shot of oil into shaft
twice daily. Close oil hole spring cover.
Other Oiling Points
Applying oil to all work plate and arm oil
holes, needle bar bearings and connections, needle bar
rock frame bearings, looper rocker sleeve and presser
lifting mechanism.
Caution:
For machines in continuous use, all oiling
points must be oiled daily. Occasionally oil tension
release mechanism and looper pull-out rack.
From
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Summary of Contents for 1315A
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