Manitowoc Grove GRT8100 Service Manual

8-33
GRT8100 SERVICE MANUAL UNDERCARRIAGE
8
Published 3/26/2018, Control # 596-05
GROVE
Installation
1. Install OMS string potentiometer on to mounting bracket
using four nuts, eight washers, and four bolts (see
Figure 8-31).
2. Install string potentiometer inside outrigger beam using
two bolts, four washers, and two nuts.
3. Attach OMS string potentiometer connector to the
attaching point on the outrigger beam.
NOTE: Avoid free-release of cable to prevent damage to
the OMS string potentiometer.
4. Connect electrical harness connector to string
potentiometer.
5. Install access cover plate to outrigger box.
Jack Cylinder
Description
Four jack cylinders are used on the crane, one at the end of
each outrigger beam. The jack cylinders provide the force for
the outrigger beam’s vertical movement. The cylinder weighs
approximately 108.6 kg (239.4 lb).
Maintenance
NOTE: Refer to Cylinders, page 2-69 for Disassembly and
Assembly of the cylinders.
Removal
1. Slightly extend outrigger beam for improved access to
the jack cylinder. Shut down the engine.
2. Tag and disconnect the hydraulic hoses from the jack
cylinder (see Figure 8-32). Remove the fittings from the
ports. Cap or plug all openings.
3. Remove the cylinder cap.
4. Place a jack capable of supporting the weight of the jack
cylinder at the base of the cylinder barrel. Jack up the
cylinder just enough to relieve any pressure on the
cylinder retaining pin.
NOTE: Jack cylinder weighs approximately 108.6 kg
(239.4 lb).
5. Remove the cotter pins securing the cylinder retaining
pin and remove the cylinder retaining pin and cylinder
cap retaining bracket.
6. Using jack, raise cylinder up just enough to insert
retaining pin into cylinder. Insert retaining pin in lugs on
cylinder. Secure pin in place with cotter pins.
7. Fasten a nylon strap onto the cylinder retaining pin and
use an adequate lifting device to lift the jack cylinder out
of tube of the beam assembly.
Installation
1. Apply grease (EP-MPG) to ID of jack cylinder support
tube.
2. If removed, install wear ring in groove in bottom of
support tube and in groove at top on jack cylinder.
3. Place a jack beneath the cylinder tube on the outrigger
beam. Using the same method as described under
Removal, lower the jack cylinder into the cylinder tube
on the outrigger beam until the retaining pin is just above
the tube. Position the jack so that it will support the
cylinder in this position. Remove lifting device from
cylinder.
4. Remove retaining pin and cotter pins from cylinder.
5. Using the jack, lower the cylinder until holes in cylinder
rod align with holes in outrigger beam.
FIGURE 8-31
8804-113
CAUTION
Use a nylon strap to remove cylinder. This will ensure
retaining pin is not damaged.

Manitowoc Grove GRT8100 Specifications

General

Brand	Manitowoc
Model	Grove GRT8100
Category	Construction Equipment
Language	English