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Fujitsu M255XK Customer Engineering Manual page 35

5 1/4" mini-flexible disk drive
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Table 4-3 Maintenance Tools (Continued)
D;.skettes:
Commercially available Work/Scratch Diskette
(Recommended)
(M2552K
=
Dysan 802067, M2553/54K
=
Dysan 802914)
Commercially available Cleaning Diskette
(Dysan
=
802944)
Read Level Diskette
Alignment Diskette
(M2552K
=
Dysan 206-31, M2553/54K
=
Dysan 206-34)
Maintenance Supplies:
Anhydrous Alcohol (Ethyl Alcohol)
Cotton Gauze
Screw Lock Liquid
Epoxy Adhesive
Lubricating Oil (Kanto Kasel 946P, or equivalent)
Light Oil (Nippon Koyu HH-17, or equivalent)
Special Jig:
MAX Media Jig (Jig D)
4.2 MAINTENANCE PRECAUTIONS
Ensure the following precautions are observed whenever working on the disk drive.
4.2.1 Screw Torque
Unless otherwise specified, all screws are tightened, according to their size, to the
torque values listed in Table 4-4.
Table
4-4
Screw Size and Torque
Screw Size
Torque
M2
11
Inch Pounds (2 Kilograms cm)
M2.6
24 Inch Pounds (4.5 Kilograms cm)
M3
33 Inch Pounds (6 Kilograms cm)
M3 setscrew
24 Inch Pounds (4.5 Kilograms cm)
4.2.2 Screw Lock
Use screw lock as speci fied below:
1.
When making an adjustment, remove the holding setscrew and clean old screw
lock liquid off the setscrew and hole as completely as possible.
2.
Before replacing a setscrew (or any screw), apply screw lock liquid to the first
three threads.
3.
When replacing a screw or setscrew, tighten it to the designated torque.
TS-021-013087 ••• 01
4-3

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