Fastener Tightening Sequence Procedures.

TM 9-2320-364-34-1

Fastener Tightening Sequence Procedures.

Figure 2-17. General Tightening Sequences.

NOTE

If a component has a critical tightening sequence it will be illustrated in that particular task;

otherwise, use the general sequence charts provided (Figure 2-17).

(1)

Installation Torque.

(a)

Tighten nuts twice in a criss-cross pattern using a torque wrench. The first time nut is torqued apply

approximately 75 percent of the final torque value.

(b)

Repeat the sequence a second time until 100 percent of the final torque value has been obtained for

each nut.

(2)

Checking Torque.

NOTE

When one or more screws are loose, check torque for all bolts on the component.

Tighten nuts in a criss-cross pattern using a torque wrench. Apply 100 percent of the final torque value.

2-861