Table 6. Correctly and Incorrectly Driven Rivet

TM 9-2320-303-24-2

CAB BODY REPAIR - CONTINUED

0289 00

RIVET REPLACEMENT - CONTINUED

Table 6. Correctly and Incorrectly Driven Rivet - Continued.

Imperfection

Cause

Remedy

Action

Sheet separation

Work not held firmly together Fasten work firmly together Replace rivet.

and rivet shank swelled.

to prevent slipping.

(a) Bucking bar not held Hold bucking bar firmly Replace rivet.

Sloping head

firmly.

without too much pressure.

(b) Bucking bar permitted

to slide and bounce

over rivet.

Buckled shank

Improper rivet length and E E, above, and rivet of proper Replace rivet.

above.

length.

Blind Rivet Driving Practices and Precautions.

Rivets should be inspected for proper installation. Grip length of each rivet is marked on top of rivet head to pro-

vide positive identification. Use of proper grip length will produce rivet installation where locking collar is flush

with top surface of rivet head. Tolerance limit on flushness is 0.020 in (0.5 mm).

For proper rivet installation, it is imperative that holes be properly prepared, tools be in good working order, and

rivets be properly applied. When problems occur, source of trouble could be in any of these areas.

Blind Rivet Installation.

CAUTION

Proper length rivet must be selected for each application to prevent damage to equipment. Rivet lengths

are sized by range of material thickness that rivet will grip.

Rivets can tolerate only 1/16-in variation in material thickness for each particular rivet length to prevent

damage to equipment. Rivet grip lengths are called out as dash number at end of manufacturers part

number.

For double dimpled sheets, add countersunk head height to materials thickness to prevent damage to

equipment.

NOTE

Prior to installing blind rivets, hole must be prepared and parts must be aligned and clamped firmly in

place. These steps are the same as for solid riveting operations (refer to Rivet Hole Drilling on page

0289 00-4).

Proper drill sizes for standard and oversize blind rivets are given in Table 2.

Countersinking dimensions and minimum sheet gage for countersunk blind rivets are shown in Tables 3

and 4.

Grip lengths are determined as shown in Table 7.

Use rivet installation tool kit, D-100-MIL-I, and puller head adapters, if required, for all blind rivets.

0289 00-8