TB-9-2320-302-13-P-1

CREW PROTECTION KIT PART 1 OF 3

TECHNICAL BULLETIN; OPERATOR’S, UNIT AND DIRECT SUPPORT, MAINTENANCE MANUAL, INSTALLATION INSTRUCTIONS, AND REPAIR PARTS AND SPECIAL TOOLS LISTS

NOVEMBER 2006

TB-9-2320-302-13-P-1 - Page 291 of 380

Installation Manual – P/N 0257550622-00

(Doc No.:

II

113500-1 D)

Freightliner M915 / M916 -

Crew Protection Kit

Page 99 of 125

6.

Fasteners

This chapter assists in identification and selection of the required fasteners used during the

installation procedure.

6.1

Definitions of Maximal Initial Torque

Basic Assumptions:

All fasteners are zinc plated @ 0.125 Friction Coefficient

All fasteners are HEX head @ Grade 8

Table 6-1.

Recommended Maximum Torque Values

Diameter

Thread

Grade 8 Torque-

ft-lb

N-m

NC

3

4

3/16" (5 mm)

NF

3

4

NC

9

12

1/4"

NF

10

14

NC

18

24

5/16"

NF

20

27

NC

35

47

3/8"

NF

35

47

NC

55

75

7/16”

NF

60

81

NC

80

108

1/2"

NF

90

122

NC

110

149

9/16

NF

130

176

NC

170

231

5/8"

NF

180

244

NC

280

380

3/4"

NF

320

434

NC

460

624

7/8”

NF

500

678

NC

680

922

1"

NF

740

1,003