1970FuryConv
Old Man with a Hat
Yesterday, I attached the bumper, using only the 4 nuts for the impact pad studs, which extend into the trunk. I did that so I could test my lighting repairs and not have to remove a bunch of bolts, if I made a mistake. Since all the lights are working, today, I attached the 4 bracket bolts and the 4 bolts from the bottom of the valence panel to the brackets off the rear of the subframe.
Bracket Bolts: Should have installed the front bolt in the bolt hole at subframe 1st, so the U at the front of the brackets could align on it. Had to remove the 4 nuts in the trunk, pull the entire bumper assembly back about 5 inches, tap 1/2x13 one of the bolt holes and reinstall bumper assmbly.
Bumper Bracket to Sub-Frame Bolts, 1/2x13
The alignment U (The circular hole does not have a matching subframe bolt hole)
LS Bracket Installed
Valence Panel Mounting Brackets had not been used for a long time. Had to tap all 4 bolt holes, 5/16x18 tap
After installing 4 spare bolts from my bolt box
Gap at top of bumper is now much better
Things I learned: the factory body service manual does not give torque specs or good directions for installing a rear bumper. I used 25 foot-pounds on the bumper bracket bolts because my experience is that using 30 foot-pounds or more twists the bumper. I tightened the 4 bolts at the lower edge of the valence panel to just firm, using a 4 inch stub ratchet. In the trunk, for the 4 nuts on the studs from the impact pads, I only tightened the nuts enough to bring the bumper into position. These studs are actually carriage bolts that mount in open sided slots in the back of the bumper brackets. Any serious tightening will spin the square beneath the head of the carriage bolt out of the slot in the bumper.
Side Marker Lights: 3 OK, but one last light problem
Right Rear Side Marker Light: inoperable because of dirt/carbon on the ground side terminal. Electrical cleaner and 400 grit sandpaper to clean. Ground wire had been butchered by previous owner. Installed new ground wire terminal end.
Front Side Marker Lights are really cool on 72 Fury (Rear SM are boring red rectangles)
Love the Light Up Lettering
Bracket Bolts: Should have installed the front bolt in the bolt hole at subframe 1st, so the U at the front of the brackets could align on it. Had to remove the 4 nuts in the trunk, pull the entire bumper assembly back about 5 inches, tap 1/2x13 one of the bolt holes and reinstall bumper assmbly.
Bumper Bracket to Sub-Frame Bolts, 1/2x13
The alignment U (The circular hole does not have a matching subframe bolt hole)
LS Bracket Installed
Valence Panel Mounting Brackets had not been used for a long time. Had to tap all 4 bolt holes, 5/16x18 tap
After installing 4 spare bolts from my bolt box
Gap at top of bumper is now much better
Things I learned: the factory body service manual does not give torque specs or good directions for installing a rear bumper. I used 25 foot-pounds on the bumper bracket bolts because my experience is that using 30 foot-pounds or more twists the bumper. I tightened the 4 bolts at the lower edge of the valence panel to just firm, using a 4 inch stub ratchet. In the trunk, for the 4 nuts on the studs from the impact pads, I only tightened the nuts enough to bring the bumper into position. These studs are actually carriage bolts that mount in open sided slots in the back of the bumper brackets. Any serious tightening will spin the square beneath the head of the carriage bolt out of the slot in the bumper.
Side Marker Lights: 3 OK, but one last light problem
Right Rear Side Marker Light: inoperable because of dirt/carbon on the ground side terminal. Electrical cleaner and 400 grit sandpaper to clean. Ground wire had been butchered by previous owner. Installed new ground wire terminal end.
Front Side Marker Lights are really cool on 72 Fury (Rear SM are boring red rectangles)
Love the Light Up Lettering