Brother DB2-DD7100, Service Manual

Page: 60 / 153

6. ASSEMBLY
SL-710A
53
6-21. Bed under cover (Gear box)
1. Tilt back the machine head.
2. Insert the felt (1) into the gear box as shown in the
illustration.
3. Install the bed under cover (2) to the bed with the eight
screws (3).
* Be careful not to clamp the felt (1) at this time.
4. Pour 70 ml of lubricating oil in through the oil filler hole
(4), and insert the rubber cap (5). (When the felt has
absorbed the lubricating oil, the oil level will be
reduced by about 50 ml.)
* Use only the lubricating oil (Nisseki Mitsubishi
Sewing Lube 10N; VG10) specified by Brother.
* Do not add more than the specified volume of
lubricating oil.
If you add too much lubricating oil, it may result in oil
leaks.
5. For sub-classes -3[][] and -4[][], connect the knee lifter
connecting rod (6) and the knee lifter arm (7) by
tightening the shoulder screw (8).
Checking the amount of oil
Check the amount of oil inside the gear box according to
the method below which matches the model being used.
<DD7100A, 710A>
Refer to "Cleaning" in the Instruction Manual.
<DD7100>
Refer to SE Information No. 2001-019.
1791M
1792M
(5)
(4)
(1)
(2)
(3)
(8)
<-3 [][], -4[][]>
(6)
(7)