Assembly Torque Specifications - Janome Quilt Maker Pro 18 VERSA Service Manual

Assembly Torque Specifications

The Torque Specifications apply to all internal and external fasteners in sizes 4.0, 5.0 and 6.0 mm in general at
ISO 4762 Screw class 8.8. The torque specifications are also generally classified as soft-jointed and are listed
according to size and placement in the machine.
1. 4 mm hex tool socket head cap screws, Class 8.8 @ 2.5 Nm (uses 3 mm hex tool tool)
• Head-frame, bearing retainers, front cover small
2. 4 mm hex tool set screw, class 8.8 @ 1.2 Nm (uses 2.0 mm hex tool tool)
• Tension assembly, 3 hole thread guide, motor pulley, hook
3. 5 mm hex tool socket head cap screw class 8.8@ 5.6 Nm (uses 4 mm hex tool tool)
• Front cover large
• Belt tensioner
• Drive-train bracket
4. 5 mm hex tool set screw, Class 8.8 @ 2.4 Nm (uses 2.5 mm hex tool tool)
• Main shaft timing pulley, hook-shaft timing pulley
• Main shaft timing collar, hook-shaft timing collar
5. 6 mm hex tool socket-head cap screws Class 8.8 @ 9.9 Nm. (Uses 5 mm hex tool tool)
An exception must be observed here since the screws are considered soft-jointed and shallow-threaded and
are used externally. It is therefore advised that this torque specification not exceed 6 Nm.
• Base plates
• Handlebars
6. 6 mm hex tool set screw, Class 8.8@ 4.5 Nm (Uses a 3 mm hex tool tool)
• Hand wheel
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