BRIDGE DECK FINISHER SET-UP GUIDE - 069596
Page 11
BDF Assembly & Set-up
SETTING THE MACHINE GRADE
• Position the machine so the carriage paving rollers are over
the top of an armor joint, bulkhead, expansion joint or end
dam for the reference point to set the machine to grade.
• By adjusting the machine legs, raise/lower the machine
so that the rollers are just touching or slightly above the
reference points.
• Move the carriage from one side to the other along the
reference point area from one side to the other to check for
consistency & clearance.
• If the grade of the paving rollers is correct, measure each of
the (4) legs from the top of screed pipe to the carriage rail,
these should be the same, but adjust the legs to correct any
differences use the leg cranks or power up/down to correct
any discrepancies.
PERFORMING THE DRY RUN
• The operator can become familiar with the controls and the
operation of the machine while performing the “Dry-Run”.
• The machine can travel up and down the deck and the
carriage will move transversely to check armor joints,
bulkheads, end dams, expansion joints. Depth checks and
clearance over rebar by the inspecting personnel.
• Adjustments can be made, and typically it is in the screed
pipe.
MACHINE PRE-POUR PROCEDURES
•
Inspect, lubricate and grease all grease fittings and moving
parts before placing any concrete.
• Coat the legs, paving carriage and frame with a protective
coating on any part that will come in contact with wet
concrete (
DO NOT USE FORM OIL OR DIESEL
)
•
Use clean designated containers to add hydraulic fluid to
the hydraulic tanks and keep any dirt or contaminates from
getting into the hydraulic system, also, take care and clean
all hydraulic fittings, quick dis-connects & components
before any work performed.
• Follow MFG guidelines for engine services or maintenance.
SETTING THE ROLLERS AND DRAG PAN ASSEMBLY
• Once the pour has begun and the machine
has moved passed over the bulkhead the full
length of the paving rollers, raise the back
side of the machine 1/8 of an inch 1/2 turn
counter clockwise (SEE PICTURE).
• This will prevent any digging in on the
concrete surface with the trailing edge of the
roller, leaving a small ridge or lines.
• When the machine is raised in the back, the
augers will “dip” in the front and they may
need to be readjusted.
• A tennis ball to golf ball size wind roll is
expected in front of the paving roller.
• Attach the burlap drag to the drag pan assembly.
• NOTE:
With new burlap being used it is important to soak it
in water for 24 hours prior to concrete placement. This will
remove any residue in the burlap and allow it to be more
absorbent
(KEEP WET DURING POUR)
.
• If the pressure from the burlap is dragging to hard, readjust
the excess around the end frame with the spikes.
• If the pressure from the burlap is too light, increase the
length of the burlap by letting some excess material off the
end frame.
• If the drag pan is hopping or being dragged across the deck
during
each pass
the frame
assembly
may be too
high or the
chains may
be too tight.