MBW Blitzscreed - Manual (Page 23)

21
SCREED MAINTENANCE & SERVICE
A-FRAME REPLACEMENT
REMOVAL (Mechanical)
1. Remove coupling driver. Support end
of shaft when driving out the spiral pin.
2. Loosen bearing set screws and remove
shaft. If there is a drive pulley on the
shaft, it must be loosened to remove
shaft.
3. Slightly loosen all bottom A-frame
whiz-lock screws securing edgings to
A-frames.
4. Loosen top tube bolts and remove top
tube.
5. Remove the two bottom whiz-lock
screws in A-frame to be removed. ReĆ
move A-frame.
INSTALLATION (Mechanical)
1. Installation must be done on a flat surĆ
face.
2. Loosely install new A-frame into
screed with two whiz-lock screws.
3. Loosely install top tube with hardware.
4. Tamp screed on flat surface to ensure it
is flat and true.
5. Tighten all whiz-lock screws securing
A-frames to screed edgings.
6. Tighten top tube bolts.
7. Turn and align bearings so the set
screws are all facing up.
8. Insert shaft into screed bearings. If a
drive pulley was removed, loosely
place in on shaft under engine. Also enĆ
sure shaft is threaded through drive
belt.
9. Align set screw marks in shaft with set
screws in bearings. This will ensure
shaft is properly centered in screed.
There should be an offset of 1-7/16"
from the end of the shaft to the end of
the screed edgings.
10.Tighten bearing set screws ensuring
they are all in the same orientation.
11.Align and install coupling driver.
Make sure offset of coupling driver
matches offset of eccentric bearings
when installed (thick side of couĆ
pling driver matches orientation of
thick side of eccentric bearings).
Support end of shaft when driving the
spiral pin through. The pin should be
driven in so an equal amount of the pin
is protruding from the coupling driver
on either side.
12.If applicable, tighten drive pulley and
align as described in ENGINE ASĆ
SEMBLY.
REMOVAL (Air Screed)
1. Disconnect exciter air hoses from air
manifold.
2. Remove male connectors from air manĆ
ifold.
3. Slide air manifold out of screed.
4. Slightly loosen all bottom A-frame
whiz-lock screws securing edgings to
A-frames.
5. Loosen top tube bolts and remove top
tube.
6. Remove the two bottom whiz-lock
screws in A-frame to be removed. ReĆ
move A-frame.
INSTALLATION (Air Screed)
1. Installation must be done on a flat surĆ
face.
2. Loosely install new A-frame into
screed with two whiz-lock screws.
3. Loosely install top tube with hardware.
4. Tamp screed on flat surface to ensure it
is flat and true.
5. Tighten all whiz-lock screws securing
A-frames to screed edgings.
6. Tighten top tube bolts.
7. Insert air manifold into screed. OrienĆ
tate air ports so they face up.
8. Install male connectors into air ports.
9. Connect air exciter hoses to air manĆ
ifold.