Table Of Contents - Brother SB3734T Service Manual

1. Outline of Mechanism ........................................................................1 - 1
Main mechanisms ...........................................................................1 - 2
Driveline ..........................................................................................1 - 3
2. Disassembly with Assembling Note .................................................2 - 1
Main frame / Covers / Upper thread guide .........................................................2 - 2
Disconnecting cables and removing accessories ...............................................................................2 - 3
Clothplate cover assy .........................................................................................................................2 - 4
Front cover assy .................................................................................................................................2 - 5
Panel plate L assy ..............................................................................................................................2 - 7
Rear cover assy ..................................................................................................................................2 - 9
Spool stand base assy .......................................................................................................................2 - 10
Thread tension L assy ......................................................................................................................2 - 12
Looper thread take-up ......................................................................................................................2 - 16
Oil pan ..............................................................................................................................................2 - 17
Lamp / Electrical parts / Main motor unit .........................................................2 - 18
LED assy / Motor L assy .................................................................................................................2 - 19
Presser foot unit ...............................................................................................2 - 21
Presser foot adjusting screw / Presser foot holder assy / Presser bar ..............................................2 - 22
Presser lifter shaft assy ....................................................................................................................2 - 23
Upper blade / Lower blade / Looper ................................................................2 - 24
Needle plate assy / Stitch width dial assy ........................................................................................2 - 25
Upper knife holder ...........................................................................................................................2 - 26
Lower knife holder assy ...................................................................................................................2 - 27
Over looper L assy ...........................................................................................................................2 - 28
Lower looper / Movable needle guard .............................................................................................2 - 29
UL lever ...........................................................................................................................................2 - 30
Upper knife plate assy ......................................................................................................................2 - 31
Upper knife lever / Upper knife arm / Feed adjusting cam .............................................................2 - 32
OL link plate / OL lever ...................................................................................................................2 - 33
OL eccentricity / UL rod / UL eccentricity ......................................................................................2 - 34
Feed mechanism .............................................................................................2 - 35
Differential adjusting plate ..............................................................................................................2 - 36
Feed bar assy ....................................................................................................................................2 - 37
Feed rod ...........................................................................................................................................2 - 41
Feed dial ...........................................................................................................................................2 - 42
Driving mechanism ..........................................................................................2 - 43
Hand wheel assy ..............................................................................................................................2 - 44
Spiral bevel gears L / Looper driving shaft .....................................................................................2 - 46
Feed adjusting lever / Differential adjusting lever / Differential dial stand assy ............................2 - 47
Needle bar .......................................................................................................2 - 49
Needle bar ........................................................................................................................................2 - 50
Needle bar driving lever assy ...........................................................................................................2 - 52
3. Adjustment ..........................................................................................3 - 1
Presser bar height adjustment ...........................................................................3 - 2
Needle bar height adjustment ............................................................................3 - 3
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