Screw Locking Agent Tb1401; Tightening Torque - Hitachi DH 50MB Technical Data And Service Manual

9-3. Screw Locking Agent TB1401

Apply screw locking agent ThreeBond TB1401 to all of the M5 hexagon socket head bolts (except for M8 for front
cover mounting and M6 hexagon socket head bolts for cylinder case mounting, which are special bolts to be
treated as service parts).
(Note) Be sure to apply screw locking agent ThreeBond TB1401 to the threads during reassembly, as the bolts
loosened with vibration may cause damage to the tool body.

9-4. Tightening Torque

9-4-1. Tightening torque of each screw
M5 Hex. Socket Hd. Bolt
D4 Tapping Screw
D5 Tapping Screw
Bolt for mounting the side cover (M5 x 16 Flanged Bolt)
Bolt for mounting the crank case cover (M5 x 16 Flanged Bolt)
Bolt for mounting the housing (M6 x 40 Flanged Bolt)
Bolt for mounting the front cover (M8 x 25 Hex. Socket Hd. Bolt) 22.1
Bolt for mounting the cylinder case (M6 x 35 Flanged Bolt)
+ 1.96
7.84 N m (80
•
0
2.0 0.5 N m (20
•
2.9 0.49 N
•
3.92 0.49 N
4.9 0.98 N
•
+ 1.96
4.9 N m (50
•
0
4.9 N
•
+ 1.96
9.8 N m (100
•
0
--- 27 ---
+ 20 + 17.4
kgf cm, 69.4
•
0 0
5 kgf cm, 17.4
•
m (30 5 kgf cm, 26.0
•
m (40 5 kgf cm, 34.7
• •
m (50 10 kgf cm, 43.4
•
+ 17.4
+ 20
kgf cm, 43.4
•
0
0
m (225 50 kgf cm, 195.2
•
+ 20
+ 17.4
kgf cm, 86.8
•
0
0
in-lbs.)
4.3 in-lbs.)
4.3 in-lbs.)
4.3 in-lbs.)
8.7 in-lbs.)
in-lbs.)
43.4 in-lbs.)
in-lbs.)