KCM 70Z7, Operation & Maintenance Manual

Page: 347 / 383

MAINTENANCE
7-106
Tightening and Retightening Torque of Nuts and
Bolts
--- every 2000 hours (50 hours at first time only)
Tighten or retighten nuts and bolts used on this machine in
accordance with the torque values shown in the following
table. Check nuts and bolts for looseness and missing daily
before and after operation. If any loose or missing nuts and/or
bolts are found , retighten or supply replacement parts. Check
No. Locations Bolt Diameter Quantity Wrench Size
Torque
N·m (kgf·m, lbf·ft)
1 Front axle mounting bolt 24 8 36
785±150
(80±15, 580±110)
2 Rear axle support mounting bolt 24 (Nut) 8 36
890±170
(90±17, 655±125)
3 Wheel rim mounting bolt 24 60 36 890 (91, 655)
4 Propeller shaft mounting bolt * 12 20 17 143 (15, 105)
5 Propeller shaft support bearing mounting bolt 20 2 30 206 (21, 152)
6 Transmission mounting bolt: Bracket * 20 4 30 401 (41, 296)
7 Transmission mounting bolt: Cushion rubber 18 2 27 315 (32, 230)
8 Engine mounting bolt: Bracket * 12 6 19 81.2 (8.3, 60)
9 Engine mounting bolt: Cushion rubber 18 2 27 315 (32, 230)
10 Muffler mounting bolt 10 8 17 50 (5, 37)
11 Counterweight mounting bolt * 30 4 46 1510 (154, 1115)
12 Top center pin upper flange lock 16 7 24 205 (21, 152)
13 Bottom center pin lock 16 1 24 210 (21, 155)
14 Loader front pin lock
70Z7
16 9 24 210 (21, 155)
12 4 19 90 (9, 66)
70TM7
12 22 19 90 (9, 66)
16 14 24 210 (21, 155)
15 Steering cylinder pin lock 12 4 19 90 (9, 66)
* Apply "LOCTITE® 262" to the threads.
tightness after the first 50 hours then every 2000 hours.
The nuts and bolts other than those shown in the table
below shall be tightened in accordance with the torque
values shown in the table on page 7-107.