Manitowoc Grove TMS800E User Manual

8-65
TMS800E SERVICE MANUAL UNDERCARRIAGE
8
GROVE
Published 01-29-2014, Control # 496-00
OUTRIGGER BEAM
Description
The outrigger beam assembly (see Figure 8-75) consists of
an outrigger beam, a 13.9 cm (5.50 in) stabilizer (jack)
cylinder, a 6.35 cm (2.5 in) outrigger extension cylinder, two
Outrigger Monitoring System (OMS) (Optional—Standard in
North America) string potentiometers, and the required
hoses and mounting hardware.
Theory of Operation
When the outrigger cylinder is activated, it extends or
retracts the outrigger beam within the outrigger box. The jack
cylinder is mounted to the end of the beam. The jack cylinder
applies force to the outrigger beam vertically. This provides
for lifting and stabilizing the crane for operation.
The Outrigger Monitoring System (OMS) string
potentiometers (if equipped) are mounted inside the
outrigger box and are connected to the outrigger beam by
cables. The string potentiometers identify whether an
extension beam is at the fully retracted, mid-extend, or fully
extended position. The OMS communicates the horizontal
position of each outrigger beam to the Rated Capacity
Limiter (RCL), aiding the operator in accurately programming
the crane’s configuration.
Maintenance
Removal
1. Extend the outrigger slightly to facilitate attaching a
lifting device to the outrigger beam.
2. From the opposite side of the outrigger housing, remove
the end cover.
3. Tag and disconnect the hydraulic lines to the cylinder
end of the extension cylinder. Cap all lines and fittings.
4. On the side of the outrigger housing, remove the
setscrews from the side adjustable wear pads and back
off the wear pads from the housing.
5. Remove the setscrews from the bottom adjustable wear
pads and back off the wear pads leaving approximately
3.2 mm (0.125 in) protruding.
6. Remove the bolt, washer, lockwasher and nut securing
each hydraulic tube to the outrigger housing.
7. Remove the OMS string potentiometer cables (if
equipped) from the attaching points on the outrigger
beam.
NOTE: Avoid free-release of cable to prevent damage to
OMS string potentiometer caused by over-range of
cable.
8. Remove the cotter pin and clevis pin securing the rod of
the extension cylinder to the outrigger housing.
9. After attaching a suitable lifting device of straps or belts
instead of chains to prevent nicking the bottom edges of
the outrigger beam, pull the outrigger beam out of the
outrigger box, re-adjusting the lifting attachment to
prevent the beam from tipping.
NOTE: The outrigger beam assembly weighs
approximately 776 kg (1710 lb).
Do not allow the end of the outrigger extension
cylinder to fall when the cylinder mounting shaft is
removed.
OMS string potentiometer may be easily removed
to avoid damage during extension cylinder pin
removal. Refer to Outrigger Monitoring System
(Optional—Standard in North America), page 8-70.
10. Position the outrigger beam on the blocking material.
11. If necessary, remove the wear pads from the bottom of
the outrigger box.
Disassembly
1. Remove the two cotter pins and clevis pins securing the
extension cylinder barrel lugs to the brackets on the mid
beam.
NOTE: Do not allow the end of the extension cylinder to fall
when the cylinder barrel lugs are removed from the
brackets. Use blocking to limit the drop or an
adequate soft support to cushion any distance the
cylinder will drop.
2. After attaching a suitable lifting device of straps or belts
instead of chains to prevent nicking the bottom edges of
the outrigger beam, pull the outrigger jack beam out of
the outrigger mid beam, re-adjusting the lifting
attachment to prevent the beam from tipping.
NOTE: The outrigger jack beam assembly weighs
approximately 576 kg (1269 lb).
3. Position the outrigger jack beam on the blocking
material.
4. Remove the wear pad from the bottom of the outrigger
mid beam.
5. Remove the cotter pin and clevis pin securing the
cylinder rod to the jack beam.
WARNING
Be sure any blocking material used is capable of
supporting the weight of the outrigger beam. Do not allow
it to tilt or slide.
Reference Only

Manitowoc Grove TMS800E Specifications

General

Brand	Manitowoc
Model	Grove TMS800E
Category	Construction Equipment
Language	English