MAINTENANCE
9VX3
500 HOURS MAINTENANCE AND CHECKS
First perform previous service hour items
■ Check the Fixed Bolt Torque
When loosened bolt or nut is found at daily check, tighten it with
torque specifications table.
1. Special torque specifications
Special tighten is applied for main bolts as illustrated below.
When replacing bolts, apply molybdenum grease to bolts, nuts,
and bearing surface of nuts.
Then, tighten them with specified torque.
Items
Tighten point
Wrench Size
metrie
Thread
Size
Tightening Torque
(N*m)
©
Travel drive
Bar
8
M10
54
©
Sprocket
Bar
8
M10
54
Lower roller
19
M12
97
©
Swing bearing
17
M10
59
©
Swing motor
Bar 10
M12
97
©
Swing gear case
17
M10 P1.25
55
Newrtonmeter (N-m) is approximately the same as 0.1 kg-m
2
. General torque specifications
Other than above-mentioned, refer the next table for torques.
Thread
Size
metric
Wrench
size
(mm)
Tighten torque
Metric
coarse H.T.
(N • m)
Metric fine
H.T. bolt
(N • m)
M
8
13
23
25
M10
17
47
50
M12
19
83
91
M14
2 2
134
135
M16
24
208
2 2 1
M20
30
411
452
M24
36
715
811
High pressure-hose
union nut
Hose Size
Tighten torque
(inch)
(N • m)
1/4"
25
3/8"
49
1
/
2
"
59
3/4"
118
1
"
137
1-1/4"
167
4 - 8 - 1
Summary of Contents for 9VX3
Page 1: ...Service Guide 9VX3 I H I SERIAL NUMBERS WB004001 up PUB No 1 1205...
Page 21: ...Swing motor...
Page 34: ...A 1 34 6 7 14 15 17 18 10 19 20 25 23 13 35 SECTION...
Page 38: ...3 1 0 Disassembly drawing For part names and numbers refer to the parts catalog...
Page 45: ...Boom Cylinder head details...
Page 51: ...Boom Swing Tightening torque 176 N m M16 x 1 5 19 8 7 6 13 5 DETAIL P DETAIL H...
