Edelbrock 25-4066 Manual de usuario

Catalog #5267, #5268, & #5269

Brochure #63-0357

Rev. 6/06- DA/mc

Page 1 of 2

EDELBROCK UPPER TRAILING ARMS

for 1978-1988 GM A/G Body (Catalog #5267)

1968-1972 GM A-Body (Catalog #5268)

1964-1967 GM A-Body & 1967-1978 American Motors Rebel,

Matador, Marlin, and Ambassador (Catalog #5269)

INSTALLATION INSTRUCTIONS

Please study these instructions carefully before installing your new Trailing Arms. If you have any questions, please

contact our Technical Hotline at: 1-800-416-8628, 7:00 am to 5:00 pm, Monday through Friday, Pacific Standard Time

or e-mail us at [email protected]. Please fill out and mail your warranty card.

Suggested Tools for Installation:

❑Jack and proper load rated jackstands

❑Tire chocks

❑Lug wrench

❑18mm or 3/4” socket and combination wrench

❑Torque wrench

❑Blue Loctite

❑Grease gun

KEEP FLOORJACK UNDER VEHICLE DURING THE

COMPLETE REMOVAL AND INSTALLATION PROCEDURE.

CAUTION: DO NOT REMOVE BOTH TRAILING ARMS

AT THE SAME TIME OR THE AXLE WILL ROTATE AND

THE TRAILING ARM INSTALLATION WILL BE MUCH

MORE DIFFICULT.

4. Start with either trailing arm and remove the rear

bolt. NOTE: Replace the bolts in same direction as

original

(see Figure 2)

REMOVAL OF STOCK TRAILING ARMS

1. Place vehicle on level surface and place tire chocks

in front of and behind front tires.

2. Support rear of the vehicle on jackstands and

remove the rear wheels. Use proper rate

jackstands on hard level surface

(see Figure 1)

3. Place a floorjack under the differential and lift up

slightly to remove tension from the trailing arms

bolts. Make sure not to lift the vehicle off the

jackstands

(see Figure 1)

Figure 1

Kit Contents

Qty.Part # Description

2 25-4066 Upper Trailing Arms (#5267)

2 25-4067 Upper Trailing Arms (#5268)

2 25-4068 Upper Trailing Arms (#5269)

Figure 2

IMPORTANT NOTE:

Proper installation is the responsibility of the installer. Improper installation will void warranty and may

result in poor performance and engine or vehicle damage.

Catalog #5267, #5268, & #5269

Brochure #63-0357

Rev. 6/06- DA/mc

Page 2 of 2

5. Remove the front trailing arm bolt.

6. If you are having difficulty removing the trailing

arm bolts, then remove the lower shock bolts and

the rear springs to aid bolt removal.

7. Clean frame at trailing arm pivot area with a wire

brush.

8. Remove the pressed-in factory rubber bushing

from axle housing. Note direction of bushing in

axle housing. Be careful not to damage axle

housing

(see Figure 3)

INSTALLATION INSTRUCTIONS

NOTE: Edelbrock Trailing Arms are fully assembled,

greased, and ready to install.

1. Install polyurethane bushing into axle housing,

facing same direction as stock

(See Figure 3).

2. Install polyurethane thrust washer on inboard side

of bushing. NOTE: Left side only, some thrust

washers will require trimming for clearance to axle

housing (See arrow on

Figure 3

). If you install

thrust washer at the same time as you install

bushing, it requires less grinding for clearance.

3. Lube (supplied) the trailing arm bushing and the

axle bushing on the surface that contact arms.

4. Install new trailing arms with the grease fittings

facing down, locating the front bolt first

(See

Figure 4).

Use heavy supplied 1/2 washer on this

end.

Figure 3

Figure 4

5. Place one drop of blue Loctite on clean threads and

torque the nut to 70 ft./lbs.

6. The trailing arm should then pivot smoothly on the

chassis.

7. Pivot trailing arm into position over polyurethane

bushing and thrust washer. Install rear bolt in

same direction as original.

Figures 2, 3, & 4

show correct installed position of both

trailing arms.

8. Although Edelbrock trailing arms are pre-lubed,

you may want to finish your installation by lubing

the front bushing with a grease gun. Be sure to

install zerk caps to prevent dirt and corrosion from

damaging the fitting.

Check all nut and bolt tightness after first 10 miles.

Edelbrock Corporation

2700 California Street

Torrance, CA 90503

Toll-Free Tech Line: 1-800-416-8628

Tech E-Mail: [email protected]

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