Brother LH4-B800E Service Manual download pdf (Page 35)

LH4-B800E

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2. DISASSEMBLY

2-6. Presser lifter mechanism

Remove the two screws q, and then remove the clamp sensor dog w from the upper thread trimmer driving link e.

Remove the screw r, and then remove the sensor t.

Remove the pan screw y, and then remove the clamp sensor plate u.

[Remove the zigzag connecting rod while referring to "Needle zigzag mechanism".]

Remove the four screws i and the screw o.

Remove the two positioning pins !0.

Remove the motor bracket assembly !1 from the top of the arm.

Loosen the set screw !2, and then remove the driving arm presser !3 and the washer !4.

Remove the four bolts !6, and then remove the presser driving arm !7 from the guide bracket !8.

Loosen the four set screws !9, and then remove the two guide shafts @0 and the guide bracket !8.

Remove the bolt !5, and then remove the bearing holder @1.

Remove the two linear ball bearings @2 from the guide bracket !8.

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Brother LH4-B800E Service Manual Page 35