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ree
Initial Setup
1. Open the boom fully into the working position
and lower to a good working height.
2. Close the ball valves on the two hydraulic lift
cylinders for safety purposes.
3. The lower pivot plates need to be in line with
each other fig. A .
4. If the rose end is removed for any reason, anti
seize should be applied to the thread before it is
screwed into the boom tip. The rose end should
be screwed into the breakaway tip so that it
measures 52 mm from the boom tip face plate to
the centre of the rose end fig.
243 thread lock to the grub screw and fasten.
5. The small hole in the sprocket must align with the
hole in the side of the pivot plate. This is adjusted
by tightening or loosening the turnbuckle fig. C .
6. The spring tension must be adjusted so there is
a 1-2 mm gap between the coils. This applies the
ideal amount of resistance when breaking away.
The spring tension can be adjusted by tightening
or loosening the eye bolt.
TO ADJUST TURNBUCKLE
1
Pull the boom tip back until the large hole in the
A
sprocket aligns with the hole in the pivot side plate,
put a pin through the holes and release the tip.
B
1
1
2
C
1
A
A
A
D
B
Figure A
B
B
E
C
C
C
F
1
D
D
Lower pivot plates
sit level
D
E
92 - Chapter 9 - Boom
E
E
F
1
2
i en ional rea awa
. Apply Loctite
2
3
2
3
3
4
2
3
Figure B
2
3
3
4
Make adjustments to turnbuckle. Pull tip back and
remove the pin. Release the tip and check alignment
of small hole in sprocket with pivot plate.
Repeat previous steps until the small hole in the
sprocket and hole in the side plate align.
Maintenan e
There are several things that need to be done
to ensure that the breakaway will be functioning
properly.
•
There are two main things that are critical to
the breakaway functioning correctly. The small
hole in the sprocket needs to align with the hole
in the side of the pivot plate (see step 5 - Initial
Setup) and the spring tension. Check these on a
regular basis and adjust as required.
•
The spring will stretch over time and will lose
tension. A spring is worn and should be replaced
when there is no tension on the spring and it
doesn't fully retract.
•
To ensure the smooth and long lasting
operation of the breakaway mechanism, it must
be lubricated on a regular basis. The sprocket
pivot, chain and lower rose joints should be
oiled with a wet lubricant every 8 hours. The
4
5
upper rose joint should be greased every 8
hours.
4
5
5
6
4
5
Figure C
52
DATE CREATED:
UNLESS OTHERWISE SPECIFIED
22/10/2012
DIMENSIONS ARE IN MILLIMETERS
DRAWN:
DEBUR ALL EDGES
MATERIAL:
DATE EDITED:
7/08/2013
4
Matt
DO NOT SCALE DRAWING
Hole in sprocket aligns
with hole in pivot plate
when adjusted correctly
REV NO
TITLE:
DATE CREATED:
DWG NO.
UNLESS OTHERWISE SPECIFIED
22/10/2012
DIMENSIONS ARE IN MILLIMETERS
GA4906305
DRAWN:
DEBUR ALL EDGES
MATERIAL:
DATE EDITED:
7/08/2013
Matt
DO NOT SCALE DRAWING
SCALE:1:3
6
7
6
7
7
8
6
7
A
Hole used when performing
B
maintenance on breakaway
REV NO
CHANGE
DATE
C
1-3 MORANG CR
GOLDACRES
MITCHELL PARK 3352
PH: 03 53426399
FAX: 03 53426308
TITLE:
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GA4906305
SCALE:1:3
SHEET 2 OF 2
D
Prairie Pro Operator's Manual MY19 - REV 2
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DATE
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MITCHELL PARK 3352
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FAX: 03 53426308
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A
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A
D
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B
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C
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