Manitowoc Grove RT880E User Manual

HOISTS AND COUNTERWEIGHT RT880E SERVICE MANUAL
5-4 Published 11-10-2014, Control # 524-00
Functional Check
1. Attach a test weight to the hook and raise and lower the
load several times.
2. Check the hoist for smooth operation of the hoist motor
and brake system.
3. Ensure the hydraulic connections are secure and free
from leaks.
Fluid Level
NOTE: Failure to align the fill/drain plug (1) with the upper
access hole (2) as shown in Figure 5-2 prior to
checking the oil level will result in an inaccurate
reading.
1. Rotate the hoist drum until the fill/Drain plug (1) appears
in the upper access hole (2) shown in Figure 5-2.
This will ensure that the planetary gears are in proper
alignment and will permit an accurate reading of the oil
level in the hoist.
2. Allow the hoist to stand idle for 20 minutes before check-
ing the oil.
3. The oil level should be visible in the sight glass (3).
Compare your reading with Table 5-1 below and take the
required action.
Table 5-1
FIGURE 5-2
1
2
3
4
Reading Diagnosis Action Required
Oil is not visible in the sight glass.
The hoist is under
filled.
Fill the hoist with oil from the upper access hole until the
oil level rises within the sight glass. Do not fill above 1/8”
(3 mm) from the top of the site glass.
Refer to Hoist, page 9-29 for the correct type of oil.
Oil is visible in the sight glass and the
level is no more than 1/8” (3 mm) from
the top of the sight glass.
The oil level is
correct.
No action is required.
Oil level is more than 1/8” (3 mm)
from the top of the sight glass or the
oil is escaping from the vent plug (4).
The hoist is overfilled.
Drain the hoist drum from the upper access hole until the
oil level falls to within 1/8” (3 mm) from the top of the sight
glass.

Manitowoc Grove RT880E Specifications

General

Brand	Manitowoc
Model	Grove RT880E
Category	Construction Equipment
Language	English