Manitowoc Grove GRT880

2-71
GROVE
GRT880 SERVICE MANUAL HYDRAULIC SYSTEM
2
Published 10/19/2017, Control # 618-00
Table 2-5 Boom Drift Chart (Cylinder length change in millimeters)
Coeff. = 0.000774
(1/ °C)
STROKE Temperature Change (°C)
(m) 5 10 15 20 25 30 35 40 45 50 55
1.5 5.81 11.61 17.42 23.22 29.03 34.83 40.64 46.44 52.25 58.05 63.86
3 11.61 23.22 34.83 46.44 58.05 69.66 81.27 92.88 104.49 116.10 127.71
4.5 17.42 34.83 52.25 69.66 87.08 104.49 121.91 139.32 156.74 174.15 191.57
6 23.22 46.44 69.66 92.88 116.10 139.32 162.54 185.76 208.98 232.20 255.42
7.5 29.03 58.05 87.08 116.10 145.13 174.15 203.18 232.20 261.23 290.25 319.28
9 34.83 69.66 104.49 139.32 174.15 208.98 243.81 278.64 313.47 348.30 383.13
10.5 40.64 81.27 121.91 162.54 203.18 243.81 284.45 325.08 365.72 406.35 446.99
12 46.44 92.88 139.32 185.76 232.20 278.64 325.08 371.52 417.96 464.40 510.84
13.5 52.25 104.49 156.74 208.98 261.23 313.47 365.72 417.96 470.21 522.45 574.70
15 58.05 116.10 174.15 232.20 290.25 348.30 406.35 464.40 522.45 580.50 638.55
16.5 63.86 127.71 191.57 255.42 319.28 383.13 446.99 510.84 574.70 638.55 702.41
18 69.66 139.32 208.98 278.64 348.30 417.96 487.62 557.28 626.94 696.60 766.26
Len
g
th chan
g
e in mm = Stroke
(
m
)
X Temperature Chan
g
e
(
°C
)
X Coeff.
(
1/ °C
)
X 1000 mm/m
Reference Only