Baby Lock BL-5180 Service Manual page 64

15. REPLACEMENT GUIDE FOR JET- AIR THREADING
a) Replacement of Upper looper threading pipe and Joint pipe.
1) Loosen the fixing screw of Pipe holder, and remove Pipe holder(1) and (2).
2) Loosen 2 fixing screws of Threader selector plate.
3) Slightly lift Threader selector plate upward and remove Upper looper threading pipe
downward and rightward.
4) In case of replacing Joint pipe with new one, remove it with Joint pipe spring very carefully.
5) Replace Upper looper threading pipe.
6) Tighten 2 screws of Threader selector plate.
7) Replace Pipe holder(1) and (2) and then tighten the screw of Pipe holder as shown below.
8) Finally you are required to check12-a), b). (p.10)
b) Replacement of Lower looper threading pipe and Joint pipe.
1) Loosen the fixing screw of Pipe holder, and remove Pipe holder(1) and (2).
2) Loosen 2 fixing screws of Threader selector plate.
3) Slightly lift Threader selector plate upward and remove lower looper threading pipe
downward and rightward.
4) In case of replacing Joint pipe with new one, remove it with Joint pipe spring very carefully.
5) Replace Lower looper threading pipe.
6) Tighten 2 screws of Threader selector plate.
7) Replace Pipe holder(1) and (2) and then tighten the screw of Pipe holder as shown below.
8) Finally you are required to check12-a), b). (p.10)
c) Replacement of Chain looper threading pipe and Joint pipe.
1) Slide the pipe rubber.
2) Loosen 2 fixing screws of Threader selector plate.
3) Slightly lift Threader selector plate upward and remove Chain looper threading pipe
downward and rightward.
4) In case of replacing Joint pipe with new one, remove it with Joint pipe spring very carefully.
5) Replace Chain looper threading pipe.
6) Tighten 2 screws of Threader selector plate.
7) Replace the pipe rubber.
8) Finally you are required to check12-a), b). (p.10)
Joint pipes
Joint pipe
springs
Upper looper
threading pipe
16
Fixing screws
Thread selector plate
Pipe holder (2)
Pipe holder (1)
Pipe holder screw
Lower looper
threading pipe
Chain looper
threading pipe
(EXCEPT BLE1SX)
Pipe holder position