Technical Manual & Parts Lists
16
Fig. 4
Fig. 5
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 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.
Summary of Contents for 1345-6A
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