Hood Alignment - AD Trucks
Submitted by Mac Kinghorn - firstname.lastname@example.org
The following procedure may be used to correct improperly
fitted hoods. Use
all or any part of this procedure as necessary to obtain proper
Loosen fender and skirt attaching bolts to body. Loosen radiator support
Push fenders down to provide clearance for hood adjustment.
Check and adjust fender skirt to dash brace rods. Measurements
taken from center of bolt head to edge or brackets. Lefts side 27
Loosen outer hood hinge bolts completely, both sides.
Disconnect hood supports from hood and swing hood supports down out
of the way. Loosen the bolts attaching the hood supports to body, both
sides. This will permit vertical adjustment of hood supports after hood
5. Loosen two inner hood hinge
bolts, both sides. Leave these bolts
just snug so
that hinge can just be moved by jarring or exerting pressure on
6. Remove the hood lock plate.
7. Adjust hood fore and aft to
obtained 1/8" to 1/4" gap between rear
edge of hood and
NOTE: IF THE GAP IS NOT EVEN, TIGHT AT
SIDES AND OPEN AT TOP CENTER OR
VICE VERSA, ADD OR REMOVE SHIMS BETWEEN THE RADIATOR SUPPORT
AND FRAME CROSS
MEMBER, AS NECESSARY TO OBTAIN EVEN HOOD GAP AT HOOD LEDGE,
BOTH AT CENTER
AND SIDES, AND TIGHTEN RADIATOR SUPPORT BOLTS TO 5 FT. LBS.
8. Lift front of hood and place
4" block under hood nose to hold it up.
9. Force rear end of hood down
tightly on hood anti-squeak. Hood
should be down
very tight against the anti-squeak to compensate for upward
push of hood
supports after they are connected. Supports will push the hood
up as far as
the play in the hinge rivets will allow. Center hood as
without disturbing fore and aft position and tighten two inner
bolts on each side while hood is held down.
NOTE: IF HOOD HINGES BOTTOM ON UNEVEN SURFACE ON THE
STEP AT COW SIDES
BEFORE HOOD IS DOWN TO POSITION DESCRIBED ABOVE, IT MAY BE
REMOVE HINGES AND SMOOTH OR HAMMER THE STEP TO REMOVE BUMPS
LOWERING OF THE HINGES. IF THE HOOD IS STILL NOT DOWN
FAR ENOUGH, IT MAY BE
NECESSARY TO ENLARGE AND ELONGATE THE HOLES IN THE COWL WITH
A RAT TAIL
FILE. THIS WILL PERMIT THE HINGE ATTACHING BOLTS TO
ROTATE IN THE SLOTTED
HOLES IN THE COWL WHEN THE HOOD IS PUSHED DOWN, AND DUE TO
THE POSITION OF
THE HINGE ARMS ON THE HINGES, MAY ALLOW ADDITIONAL DOWNWARD
MOVEMENT OF THE
10. Remove the 4" block,
lower hood and check hood fit at cowl. Hood
should be very tight against the anti-squeak across top of cowl. If the
hood touches the anti-squeak tightly at the sides but bows up in the center,
adjust as follows:
A) Remove two outer screws on each side holding center
bracket to hood
reinforcement at rear of hood.
B) Loosen two inner screw in bracket.
C) Pry outer ends of bracket away from reinforcement and
place flat washers
as necessary between outer ends of
bracket and reinforcement on both sides.
D) Reinstall outer screws through the flat washers and
tighten all brackets
to reinforcement attaching screws securely.
This will bring center of hood down and reduce the
possibility of flutter at
the center of hood. If hood still does not touch
anti-squeak tightly after
the above operations, it will be necessary to shim under
prevent hood flutter, as it is not possible to lower hood
11. Tighten outer hood hinge
bolts, both sides.
12. Reassemble hood supports to
hood, both sides. With hood in raised
and resting on hood supports, tighten bolts attaching hood supports
both sides. These were originally loosened at the dash to permit
adjustment of the hood support after the hood had been adjusted to
position. This re-adjustment is necessary to prevent the
possibility of one hood support being fully locked in the open position and
the other being partially open.
Replace hood lock plate, tightening plate attaching screws just
snug, and push hood lock plate to the rear as far as the clearance in the
screw holes will allow. Drop hood to closed position and lock, this will
center hood lock plate. Then raise hood, move lock plate forward
tighten lock plate screws.
Adjust lock stud to proper length as necessary to hold hood closed.
The lock stud may appear to be too short to get proper adjustment. This
will usually be due to bent hood lock plate or bent upper catch plate, these
plates being bent by slamming the hood shut while improperly adjusted.
will be necessary to straighten the bent plates if this condition exists, to
bring the lock stud to proper position to hold hood closed.
Lower hood to locked position and raise rear end of fenders to fit
lower edge of hood and tighten fender and skirt to body attaching parts.