Komatsu D155A-6 Assembly Instruction Manual page 62

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Assembly process No.
S-1
7. Installation of operator's cab
Lower the operator's cab assembly onto the floor frame slowly.
a Set the lock lever in the lower position.
a Take care that the cover and cap will not interfere with each other since the clearance
between them is narrow.
a Take care that wiring harnesses and hoses will not be pinched between the cab and floor
frame.
Tighten the bolts in the order shown in Fig. 7. (Snug torque)
Tighten the bolts on the front side in the order indicated by the arrows.
Tighten bolts (1) - (21) with an impact wrench or a torque wrench further by 60Åã.
Tighten bolts (22) and (23) until they are settled perfectly.
M16
12 bolts
Fig. 7 Cab mounting bolts
Torque
M16
279 ± 27.9 Nm
Snug torque
M20
294 ± 29.4 Nm
M24
294 ± 29.4 Nm
Precautions
Use the separate check sheet to check the tightening
torque and retightening.
When using an impact wrench near a glass, put cowhide
or thick cloth between the impact wrench and glass so
that the impact wrench will not touch the glass directly.
Installation of operator's cab (8/16)
M24
M20
6 bolts
15 bolts
Retightening
60° ± 10°
60° ± 10°
KW20P impact wrench
KW3800 impact wrench
Long M24 socket
Long M30 socket
Long M36 socket
200 mm joint
KW4500 im act wrench
Other remarks
57
Tighten to 294 Nm {30 kgm}, and then
tighten further by 60°.
Either impact wrench or
torque wrench may be
used to retighten bolts.
No.
Loose-supply items
9
10
11
12
13
14
Necessary tools
Name
Q'ty
1
1
1
1
1
1
1
Q'ty
01010-81655
12
01643-31645
12
01011-82020
15
01643-32060
15
01011-82425
6
01643-32460
6
Necessary equipment
Name
Q'ty

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