Operation Manual

BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, 8T601, WSM
ROTARY MOWER
4. TIGHTENING TORQUES
Tightening torques of screws, bolts and nuts on the table below are especially specified.
(For
general use screws, bolts and nuts: See page 7-S3.)
[RCK54-23BX, RCK60B-23BX]
Item
N'm
kgf·m ft-Ibs
Gear box mounting screw and nut
77.4 to 90.2 .
7.9 to 9.2
57.1 to 66.5
Mower blade screw
102.9 to 117.7 10.5 to 12.0 75.9 to 86.8
Center pulley holder bolt and nut
77.4 to 90.2 7.9 to 9.2
57.1 to 66.5
Outer pulley mounting nut 196.17 to 225.6 20.0 to 23.0 144.7 to 166.4
Gear box bracket (RH) mounting bolt and nut
77.4 to 90.2 7.9 to 9.2
57.1 to 66.5
Pulley boss mounting nut 23.5 to 27.4 2.4 to 2.8 17.4 to 20.3
Pulley holder mounting bolt and nut 77.4 to 80.2 7.9 to 9.2
57.1 to 66.
W10127
[RCK54P-23BX]
Item
N'm
kgf'm
ft-Ibs
Mower blade screw
Gear box screw
Gear box mounting screw (for aluminum gear case)
103 to 118
23.5 to 27.4
39.2 to 44.1
I
i
10.5 to 12.0
2.4 to 2.8
4.0 to 4.5
I
76 to 87
17.4 to 20.2
28.9 to 32.5
Gear box mounting screw and nut
77.4 to
90.2
7.9 to 9.2
57.1 to 66.5
Center pulley holder bolt and nut 77.4 to 90.2 7.9 to 9.2
57.1 to 66.5
Outer pulley mounting nut 166.7 to 186.3
17.0to 19.0 123.0 to 137.0
Pulley holder mounting bolt and nut
I 77.4 to 90.2
7.9 to 9.2
i
57.1 to 66.5
Gear box bracket (RH) mounting screw (for aluminum
gear case)
39.2 to
44.1
4.0 to 4.5 28.9 to 32.5
W1013579
7-S18