Baby Lock BLE1, Service Manual

15. REPLACEMENT GUIDE FOR JET- AIR THREADING  

(EXCEPT  BLE1SX)

16

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

Fixing screws 

Thread selector plate

Pipe holder position

Chain looper
threading pipe

Upper looper
threading pipe

Lower looper 
threading pipe

Pipe holder screw

Pipe holder (1)

Pipe holder (2)