allen BDF4836B, Safety & Operation Manual

Page: 57 / 64

SECTION 3
SERVICE
050362 Page 57
3.3 - Trouble Shooting
Problem Cause Solution
Finishing
Open or pitted surface left by the rollers (the
rollers are plowing concrete)
Paving rollers are carrying to much concrete
(the roll of concrete on the side of the rollers
is to large)
Adjust the augers lower to leave a golf ball
size roll at the front edge of the leading roller
Concrete may be placed to far ahead of the
machine allowing it to dry.
Limit concrete placement to within a maxi -
mum of 10 fee ahead of the paving machine
(5 feet is recommended)
Open or pitted surface left by the rollers (no
concrete on side of the leading roller).
Augers are set too low and are removing to
much concrete (paving rollers carrying no con-
crete roll).
Raise augers to leave golf ball size of concrete
at the front end of the leading roller.
Roll of concrete coming off the rear of paving
rollers (the rollers are leaving a ridge in the
slab).
This condition may exist if the rear of the paving
rollers is too low.
Raise the rear of the paving rollers by raising
the rear of the machine using the machine leg
cranks until the excess roll or ridge disappears.
Normally, the rear of the paving rollers will be
1/8 to 3/16 inch higher than the front of the
leading edge of the paving rollers. Note: The
augers may need to be readjusted at this time.
Drag Pan is leaving an indentation in the sur-
face, at the curb line or slab edge.
There may be too much additional weight on the
drag pan.
Remove some or all of the added weight (usually
concrete) from the pan.
The pan is not being pulled straight.
Adjust and hook the chains to the pan so that all
the chains are hooked the same number of links
from the pan.
The pan is being pulled at a point to high by the
pan hanger frame.
Adjust the height of the hanger frame distance
to the top of the pan to approximately 6 inches.
The total finished surface is not sealed behind
the drag pan.
The concrete may be abnormally dry (the sur-
face may be drying from hot winds).
The use of pre-wetted burlap drag is suggested.
Keep burlap wet.
Finish coming from rollers seems to be wash-
board looking (possible vibration on lower pav-
ing carriage).
Auger shaft may be bent or augers are out of
balance. One or more slide blockson lower car-
riage frame may not be contacting skew ring on
upper carriage.
Remove augers and inspect shafts for straight-
ness. Attach the augers and check for visual
imbalance by looking at the very end of the
augers for abnormal oval rotation. Tighten cen-
ter pivot bolt so slide blocks contact skew ring;
still allowing skewing if skew cylinder is used.
Machine Operation
Engine does not start after “Shutdown”. Engine ran out of fuel or water in fuel.
Replace water contaminated fuel. For
best performance use unleaded gas-
oline and avoid alcohol blended fuels.
Use only straight weight SAE 30 oil in engine
crankcase.
No hydraulic power or loss in speed and/or
power.
Low hydraulic oil level in tank.
Add hydraulic oil to within two inches of the top
of tank.
Carriage does not move when power is applied.
Engine is under strain.
Improper hose hookup to carriage shifting
mechanism.
Hookup hoses properly.