Manitowoc Grove RT880E User Manual

Grove Published 11-10-2014, Control # 524-00 2-81
RT880E SERVICE MANUAL HYDRAULIC SYSTEM
2
UPPER TELESCOPE CYLINDER
Description
The upper boom telescope cylinder Figure 2-46 has a 17.7
cm (7.0 inch) bore and is internally ported (rod ported). Oil
from the telescope control valve is routed to the cylinder by
external lines. Foreign material is prevented from entering
the cylinder during rod retraction by a wiper ring in the head
and O-ring seals prevent internal and external leakage. The
retracted length of the telescope cylinder is 399 in (1013.5
cm) and the extended length is 746.5 in (1896.1 cm) from the
end of the barrel to the end of the port block on the rod.
The cylinder weighs 2181.9 lb (989.7 kg).
FIGURE 2-46
17
16
18
22
19
13
15
23
10
11
5
8
6
2
7403-1
3
5
12
14
27
4
7
24
13
20
25
1
4
9
11
26
21

Manitowoc Grove RT880E Specifications

General

Brand	Manitowoc
Model	Grove RT880E
Category	Construction Equipment
Language	English