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Page Title:
Horizontal Bow Measurements -Vehicle Frames Over 20 Feet (Figure 9). |
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 TB 9-2300-247-40
a.
Perform steps a thru c of paragraph 33
NOTE
above for each 20 foot section of frame rail.
For frame rail sections with added
If frame rail exceeds the tolerances
flaseplate, subtract 5/16-in.
from
specified, the vehicle will be classified
plumb bob mark to compensate for
unserviceable.
the flaseplate added to the frame rail.
35.
Frame Squareness - All Vehicle Frames
b. Record measurements (A) and (B)
on DA Form 2404.
NOTE
NOTE
This procedure requires that the
To verify frame rail tolerance
vehicle right and left front spring
measurement, have another qualified
shackles be equipped with straight
shop
technician
repeat
mark
type grease fittings.
measurement steps a and b.
If
second measurements verify frame
M39 series vehicles modified with
rail out of tolerance condition, vehicle
M809
vehicle
power
steering
will be classified as unserviceable.
conversion kit will have a grease
fitting installed on the in- side of the
c.
Record second measurements (A) and (B).
right front spring shackle (re- fer to
34.
Horizontal Bow Measurements -Vehicle
Frames Over 20 Feet (Figure 9).
a.
Locate and clean the two front grease
fittings (1) on right and left front spring front
NOTE
shackles (2).
On vehicles with frames over 20 feet
in length, the forward (front) 20 feet
b.
Check that grease fittings (1) are straight
of frames rail is measured separately
type. If not, replace with straight type
from the rear (back) 20 feet of frame
grease fittings.
rail. The front 20 feet of frame rail will
be measured from front to rear and
c.
Using tape, securely attach sheet paper (3)
the rear 20 feet of frame rail will be
to shop floor directly under right and left
measured from rear to front. This will
front spring front shackles (2)
cause an overlap in measurements.
Figure 11. Marking Paper Under Right Spring Shackle
13
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