--- 14 ---
9-4. Tightening Torque
Hexagon socket flanged bolts M5
Hexagon socket hd. bolts M4
Hexagon socket hd. bolts M5
Hexagon socket hd. bolts M6
Hexagon socket hd. bolts M8
Tapping screw D4
NOTE: If above bolts are tightened more than the designated values, it may cause breakage.
Without fail, tighten the bolts and screws according to the above specified values.
40 5 kg-cm (34.8 4.3 lb-in)
45 kg-cm (39.1 lb-in)
80 kg-cm (69.5 lb-in)
100 kg-cm (86.9 lb-in)
300 kg-cm (260 lb-in)
20 kg-cm (17.4 lb-in)
(6) Reassembly of the Stop Lever
[10]
:
Prior to reassembly, thoroughly coat the grease
(Doubrex 251, Part No. 980757, is
recommended) on the sliding portion of the Stop
Lever
[10]
. As illustrated in Fig. 11, place the end
surface of the Stop Lever
[10]
on the flange
portion of the Front Cover
[8]
and compress the
Lever Spring
[6]
by pressing Damper (B)
[7]
with
two slender flat-blade screwdrivers. Then, align
the holes of the Stop Lever
[10]
and the Spring
Case
[5]
, and insert the Needle Roller
[11]
.
+20
0
9-3. Application of Adhesive
(1) Prior to reassembly, all hexagon socket hd. bolts M5 and M6, and machine screws must be coated with Screw
Locking Agent TB1401.
(2) The following parts must be replaced with Hitachi Genuine Parts if they are loosened.
Front cover fixing bolts:
M8 x 40
[1]
Cylinder case fixing bolts:
M8 x 35
[26]
Fixing bolt on the Connecting Rod Ass'y
[31]
:
M8 x 16
[34]
CAUTION: If fastening bolts come loose from vibration, it could cause serious damage to the
machine. Ensure without fail that TB 1401 Screw Locking Agent is applied as directed
above prior to reassembly.
Before applying the TB 1401, carefully clean any grease or other foreign matter from the
male and female threads with gasoline, thinner or similar cleaning solvents.
+5
+4.3
+12.4
0
+20
0
+17.4
0
+17.4
0
+20
0
+5
Fig. 11
[5]
[10]
[7]
[6]
[11]
[8]
+4.3
0
