Screw Locking Agent Tb1401; Tightening Torque - Hitachi DH 40MR Technical And Service Manual

(7) Oil seal and others
Take care not to scratch or cut Oil Seal (A) [52] and Oil Seal (B) [48] of the Cylinder Crank Case [49], Oil Seal
[10] and O-ring (1AS-60) [9] of the Front Cover [8], O-ring (C) [18] of the Second Hammer [19], Rubber Seal
[41] of the Crank Cover [39] and the O-ring [30] of the Piston [32] and the Striker [29].

9-3. Screw Locking Agent TB1401

Apply screw locking agent TB1401 to all hex. socket head bolts M4, M5 and M6.
(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

Front cover mounting bolts ............................................................................... 13.7
(Hex. socket head bolt M6 x 25)
Tapping screw D5............................................................................................. 2.94
Hex. socket head bolt M6 x 45 ......................................................................... 9.8
Hex. socket head bolt M6 x 22
Tail cover mounting bolt ................................................................................... 4.41
(Hex. socket head bolt M5 x 10)
Crank cover mounting bolt ............................................................................... 4.41
Lever shaft mounting bolt
(Hex. socket head bolt M4 x 12)
Tapping screw (W/Flange) D4 .......................................................................... 1.96
Handle mounting bolt ....................................................................................... 4.41
(Hex. socket head bolt (W/Flange) M5x14)
--- 23 ---
+10
+0.98
N m (140 kgf cm)
• •
0
0
0.49 N m (30 5 kgf
•
+20
+1.96
N m (100 kgf cm)
• •
0
0
0.49 N m (45 5 kgf
•
0.49 N m (45 5 kgf
•
0.49 N•m (20 5 kgf•cm)
0.49 N•m (45 5 kgf•cm)
cm)
•
cm)
•
cm)
•