Screw Torque List - Brother HL-4040CN, HL-4050CDN, HL-4070CDW Service Manual

3.

SCREW TORQUE LIST

Tightening Note:
When tightening any of the screws shaded in the table below, slowly turn it
counterclockwise (in the direction to loosen the screw) with your hand until you feel that
the screw is a little dropped in the hole. Then, slightly turn it clockwise (in the direction
to tighten the screw) with your hand and tighten it according to the specified torque with
a screwdriver.
Note:
For verifying the shape of each screw, refer to
Location of screw
Tray cover ASSY
Fuser unit
Back cover upper
Drive shaft holder
Paper eject ASSY DX/SX
Back cover ASSY
Transfer HVPS PCB unit
Density shield plate 1
Earth plate 2
Earth plate 3
Registration-mark sensor PCB ASSY 1
Registration-mark sensor PCB ASSY 2
Density sensor
Registration relay PCB ASSY
Transfer HVPS PCB ASSY
Side cover L ASSY
Side plate LB
Side cover R ASSY
Paper feed frame unit
PF plate
Belt cleaner release sensor PCB ASSY
THM/HUM sensor holder ASSY
THM/HUM ground plate
Release rack plate
"APPENDIX 4 SCREW
Screw type
Taptite, bind B M4x12
Taptite, pan B M4x14
Taptite, cup S M3x8
Taptite, bind B M3x10
Taptite, cup B M4x12
Taptite, cup S M3x6
Taptite, cup S M3x8
Taptite, cup S M3x6
Taptite, bind B M3x8
Taptite, cup S M3x6
Taptite, bind B M3x8
Taptite, bind B M3x8
Taptite, bind B M3x8
Taptite, bind B M3x8
Taptite, bind B M3x8
Taptite, cup B M3x10
Taptite, cup S M3x6
Taptite, cup B M4x12
Taptite, cup S M3x8
Taptite, cup B M4x12
Taptite, cup S M4x8
Taptite, cup S M3x6
Taptite, cup B M4x12
Taptite, cup S M4x8
Taptite, bind B M3x10
Taptite, cup S M3x6
Taptite, bind B M3x8
Taptite, bind B M3x8
Taptite, cup S M3x6
Taptite, cup S M3x6
Taptite, cup B M3x8
3-3
CATALOGUE".
Tightening torque
Q'ty
N m (kgf • cm)
2 0.80 ±0.1 (8 ±1)
1.20 ±0.1 (12 ±1)
2
0.80 ±0.1 (8 ±1)
2
1 0.60 ±0.1 (6 ±1)
1.20 ±0.1 (12 ±1)
2
0.80 ±0.1 (8 ±1)
1
2 0.80 ±0.1 (8 ±1)
0.80 ±0.1 (8 ±1)
2
0.60 ±0.1 (6 ±1)
2
1 0.80 ±0.1 (8 ±1)
0.60 ±0.1 (6 ±1)
1
0.60 ±0.1 (6 ±1)
1
1 0.60 ±0.1 (6 ±1)
0.60 ±0.1 (6 ±1)
2
0.60 ±0.1 (6 ±1)
1
3 0.70 ±0.1 (7 ±1)
0.80 ±0.1 (8 ±1)
1
1.20 ±0.1 (12 ±1)
3
1 0.80 ±0.1 (8 ±1)
1.20 ±0.1 (12 ±1)
1
1.20 ±0.1 (12 ±1)
1
0.80 ±0.1 (8 ±1)
3
1.20 ±0.1 (12 ±1)
2
1.20 ±0.1 (12 ±1)
2
0.70 ±0.1 (7 ±1)
2
0.70 ±0.1 (7 ±1)
1
0.40 ±0.1 (4 ±1)
5
0.50 ±0.1 (5 ±1)
1
0.69 ±0.1 (6.9 ±1)
4
0.69 ±0.1 (6.9 ±1)
1
0.49 ±0.1 (4.9 ±1)
1
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