
BRIDGE DECK FINISHER SET-UP GUIDE - 069596
Page 10
BDF Assembly & Set-up
CHAIN TENSIONING
• The chain tightener on the paving carriage is used
to equalize the tension of each the 2 carriage travel
chains (SEE PICTURE).
• Make sure paving carriage is “square” with the
carriage rails.
• With dual chain machines, run the carriage to the
power end of the machine and verify that the distance
between the carriage frame and the carriage travel
shaft & sprocket teeth (Dimension “Y” & “Z”) is the
same at each chain.
• To keep the carriage square, adjust the side thrust
rollers.
• When determining the amount of chain sag, position
the carriage to one end of the machine and measure
the space between the bottom and top chain in the
center of the machine on both sides (SEE PICTURE).
• Our recommendation is the chain sag should not be
less than the distance for dimensions “1” and/or “2”
shown below.
• Too tight and excessive chain wear may result. Too
slack and excessive sprocket wear and/or improper
carriage reversal may result. NOTE: dimensions are for
a FLAT machine.
• Adjust for machines with a crown.
4836B DIMENSION “1”
6048B DIMENSION “2”
Chain Span
Minimum Chain Sag
Chain Span
Minimum Chain Sag
40 Feet
7 Inches
40 Feet
3 Inches
60 Feet
9 Inches
60 Feet
5 Inches
80 Feet
11 Inches
80 Feet
7 Inches
-
-
100 Feet
11 Inches
-
-
120 Feet
16 Inches
Note:
For lengths over 120’ Please consult AEC Product Support