Komatsu PC58UU-3, Руководство по ремонту

Страница: 135 / 528

STRUCTURE, FUNCTION AND MAINTENANCE STANDARD HYDRAULIC CYLINDER
10-92
PC58UU-3
12
Unit: mm
No. Check item Criteria Remedy
1
Clearance between
piston rod and
bushing
Cylinder
Standard
size
Tolerance
Standard
clearance
Clearance
limit
Replace
bushing
Shaft Hole
Boom
ø
55
-0.030
-0.104 +0.163
+0.006
0.036 - 0.267 0.567
Arm
ø
55
-0.030
-0.104 +0.163
+0.006
0.036 - 0.267 0.567
Bucket
ø
50
-0.025
-0.087 +0.164
+0.007
0.032 - 0.251 0.551
Offset
ø
50
-0.025
-0.087 +0.164
+0.007
0.032 - 0.251 0.551
Blade
ø
50
-0.025
-0.087 +0.164
+0.007
0.032 - 0.251 0.551
2
Clearance between
piston rod support
shaft and bushing
Boom
ø
50
-0.147
-0.209 +0.142
+0.080
0.227 - 0.351 1.0
Replace
pin and
bushing
Arm
ø
50
-0.025
-0.064 +0.142
+0.080
0.105 - 0.206 1.0
Bucket
ø
45
-0.170
-0.230 -0.011
-0.065
0.105 - 0.219 1.0
Offset
ø
50
-0.025
-0.064 +0.142
+0.080
0.105 - 0.206 1.0
Blade
ø
55
-0.030
-0.076 +0.174
+0.100
0.130 - 0.250 1.0
3
Clearance between
cylinder bottom
support shaft and
bushing
Boom
ø
50
-0.147
-0.209 +0.142
+0.080
0.025 - 0.351 1.0
Bucket
ø
45
-0.025
-0.064 +0.142
+0.080
0.105 - 0.206 1.0
Offset
ø
50
-0.025
-0.064 +0.142
+0.080
0.105 - 0.206 1.0
Blade
ø
55
-0.030
-0.076 +0.174
+0.100
0.130 - 0.205 1.0
4
Clearance between
trunnion shaft and
bushing
Arm
ø
55
-0.080
-0.126 +0.137
+0.078
0.158 - 0.263 1.0
5
Cylinder head tight-
ening torque
Boom 735 ± 73.5 Nm {75 ± 7.5 kgm}
Re-
tighten
Arm 1.08 ± .011 kNm {110 ± 11.0 kgm}
Bucket
Order: 1) Tighten to 863 Nm {88 kgm}
2) Loosen to 0 Nm {0 kgm}
3) Tighten to 863 Nm {88 kgm}
Offset 676 ± 67.6 Nm {69 ± 6.9 kgm}
Blade 863 ± 86.5 Nm {88 ± 8.8 kgm}
6
Cylinder piston
tightening torque
Boom 1.67 ± 0.17 kNm {170 ± 17.0 kgm} (width across flats 55mm)
Arm 1.67 ± 0.17 kNm {170 ± 17.0 kgm} (width across flats 55mm)
Bucket 1.42 ± 0.14 kNm {145 ± 14.5 kgm} (width across flats 55mm)
Offset 1.42 ± 0.14 kNm {145 ± 14.5 kgm} (width across flats 55mm)
Blade 1.42 ± 0.14 kNm {145 ± 14.5 kgm} (width across flats 55mm)