Work Equipment Cylinder - Komatsu WA250-6 Shop Manual

700 Work equipment

Work equipment cylinder

Work equipment cylinder

WA250-6
Lift cylinder
Bucket cylinder
No. Check item
Clearance between piston
1
rod and bushing
Tightening torque of
cylinder head
2
Tightening torque of
cylinder head mounting bolt
Tightening torque of
cylinder piston locknut
3
Tightening torque of
cylinder piston lock bolt
WA250, 250PZ-6
Cylinder Standard
name size
Shaft
–0.030
Lift 70
–0.104
–0.030
Bucket 75
–0.104
Lift 1,030 ± 103 Nm {105 ± 10.5 kgm}
Bucket
Lift 3,970 ± 397 Nm {405 ± 40.5 kgm} (width across flats: 80 mm)
Bucket
Criteria
Tolerance
Standard
clearance
Hole
+0.271 0.105 –
+0.075 0.375
+0.291 0.107 –
+0.077 0.395
250 ± 24.5 Nm {25.5 ± 2.5 kgm}
98 – 123 Nm {10 – 12.5 kgm}
SEN03831-00
Unit: mm
Remedy
Clearance
limit
Replace bushing
0.675
0.695
Retighten
10-700
1
23