Brother BAS-311E Service Manual page 42

Chapter 3. Assembly
Feed mechanism (X axis) 311EL and 326E
@7
!8
!6
!9
@7
4. Position X-timing pulley B326 !6 , which is attached to X-pulley bracket L !1 via the X-timing pulley shaft !3 , so that there
is a 2 mm clearance between the top of X-timing pulley B326 ! 6 and end A of X-pulley base L ! 1 . Position timing pulley
A !5 so that there is a 2.5 mm clearance between the bottom of timing pulley A !5 and end B of X-pulley base L !1 . Then
secure X-timing pulley B326 !6 and timing pulley A !5 to the X-timing pulley shaft !3 using the set screws !8 and !9 .
5. Position timing pulley B o attached to X-pulley bracket R y so that clearances C and D are equal, then secure it to X-
pulley shaft R u using the set screw @0 .
6. Loop X-timing belt A326 ! 2 around X-timing pulley A311 (A326) @ 2 of X-pulse motor @ 1 and X-timing pulley B326 ! 6 .
Temporarily attach X-pulley bracket L ! 1 to the bed using the bolt @ 3 and washer @4 .
7. Loop X-timing belt B326 w around timing pulley A !5 of X-pulley base L !1 and timing pulley B o of X-pulley base R y.
Temporarily attach X-pulley bracket R y to the bed using the bolt @ 5 and washer @6 .
8. Insert the bolt @7 that is used to adjust the tension of X-timing belt A326 !2 from the left side of the bed, into X-pulley
bracket L ! 1 .
9. Insert the bolt @8 that is used to adjust the tension of X-pulley belt B326 w from the right side of the bed, into X-pulley
bracket R y.
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@3
@4
!1
2mm
!2
!3
!5
2.5mm
BAS-311E.311EL.326E.326EL
@1
@2
@6
@0
w
o
@5
u
y
@8