Tuff-country 13720 - GM 73-87 3/4 ton 3 box kit User Manual download pdf

PART NUMBER : 13720

1973 — 1987 CHEVY PICK UP 3/4 TON

3” SUSPENSION SYSTEM / WITH REAR BLOCKS

PARTS LIST:

Part # Description Qty.

BL301 3” Rear Lifted Blocks 2

5U-6109R 5/8” X 3 1/2” X 9 5/8” Round U-bolts 1

5U-3507R 5/8” X 3” X 7 5/8” Round U-bolts 3

5U-6112R 5/8” X 3 1/2”” X 12 1/2” Round U-bolts 4

58NW 5/8” High Nuts & Washers 2

GMSBNB1 Front Spring Eye Bolts 1

GMBLNB Front & Rear Brake Line

Extensions & Hardware 1

LUBE Lube Pack 2

13720INST Instruction Sheet 1

INSTALLATION MANUAL

3” SUSPENSION SYSTEM

CHEVY PICKUP 3/4 TON

1973 —– 1987

PART # 13720

SJ050702

Special Note: This box kit includes the rear lifted

blocks, front and rear U-bolts, front and rear brake

line extensions and necessary hardware. Tuff

Country EZ-Ride Suspension offers two styles of

front springs, a Heavy Duty spring and a EZ-Ride

spring. If you have not already ordered your front

springs , please contact Tuff Country or your local

Tuff Country dealer and order (2) 18370 (EZ-Ride

Springs) or (2) 18371 (Heavy Duty Springs)

Congratulations on your selection to purchase a Tuff

Country EZ-Ride Suspension System. We at Tuff

Country are proud to offer a high quality product at the

industries most competitive pricing. Thank you for your

confidence in us, and our product.

Before installation begins, it is the customers/installers

responsibility to make sure that all parts are on hand. If

any parts are missing, please feel free to call one of our

customer service representative @ (800) 288-2190.

Make sure to use locktite on all new and stock hardware

associated with this installation.

It is the responsibility of the installers to make sure

that the rear view mirror hanger is hung from the

rear view mirror. The rear view mirror hanger has

instructions on proper post installation procedures.

Torque Settings

5/16” 15—18 ft lbs. 3/8” 28—32 ft lbs.

7/16” 30—35 ft lbs. 1/2” 65—85 ft lbs.

9/16” 85—120 ft lbs. 5/8” 95—130 ft lbs.

3/4” 100—140 ft lbs.

Tuff Country EZ-Ride Suspension highly

recommends that a qualified and or certified

mechanic performs this installation.

If you desire to return your vehicle to stock, it is the

customers responsibility to save all stock hardware.

IMPORTANT CUSTOMER INFORMATION

This vehicles reaction and handling characteristics

may differ from standard cars and/or trucks.

Modifications to improve and/or enhance off road

performance may raise the intended center of

gravity. Extreme caution must be utilized when

encountering driving conditions which may cause

vehicle imbalance or loss of control. DRIVE SAFELY!

Avoid abrupt maneuvers, such as sudden sharp

turns which could cause a roll over, resulting in

serious injury or death.

It is the customers responsibility to make sure that a

re-torque is performed on all hardware associated

with this suspension system after the first 500 miles

of installation. It is also the customers responsibility

to do a complete re-torque after every 3000 miles or

after every off road use.

After the original installation, Tuff Country EZ-Ride

Suspension also recommends having the alignment

check every 6 months to ensure proper tracking,

proper wear on tires and front end components. Tuff

Country EZ-Ride Suspension take no responsibility

for abuse, improper installation or improper

suspension maintenance.

It is the responsibility of the customer or the

mechanic to wear safety glasses at all times when

performing this installation.

It is the customers/installers responsibility to read

and understand all steps before installation begins.

OEM manual should be used as a reference guide.

The Tuff Country EZ-Ride Suspension product safety

label that is included in your kit box must be

installed inside the cab in plain view of all

occupants.

It is the responsibility of the installers to make sure

that the rear view mirror hanger is hung from the

rear view mirror. The rear view mirror hanger has

instructions on proper post installation procedure.

1 2 3 4 5 6 7 8

Summary of Contents

Page 1 - Torque Settings

PART NUMBER : 13720 1973 — 1987 CHEVY PICK UP 3/4 TON 3” SUSPENSION SYSTEM / WITH REAR BLOCKS PARTS LIST: Part # Description

Page 2

LIMITED LIFETIME WARRENTY Notice to all Tuff Country EZ-Ride Suspension customers: It is your responsibility to keep your original sales receipt! If

Page 3

catch the brake fluid that will leak out. After the installation is complete, the brake lines will need to be bleed. Repeat procedure on the passenger

Page 4

Rear End Installation 20. To begin installation, block the front tires of the vehicle so that the vehicle is stable and can’t roll forward. Safely li

Page 5 - ILLUSTRATION # 2

ILLUSTRATION # 1STOCK FRONT SHOCKILLUSTRATION # 2NEW FRONT LEAF SPRINGFRONT OF VEHICLESTOCK FRONTSPRING HANGERNEW FRONT SPRINGHANGER HARDWARESTOCK FRO

Page 6 - ILLUSTRATION # 4

ILLUSTRATION # 3ILLUSTRATION # 4STOCK SPRING SHACKLE HARDWARESTOCK SHACKLENEW FRONT LEAFSPRINGNEW FRONT SPRING SHACKLE HARDWAREDRIVER SIDENEW 5/8” X 3

Page 7 - ILLUSTRATION # 6

ILLUSTRATION # 5ILLUSTRATION # 6PASSENGER SIDE OF VEHICLENEW 5/8” X 3 1/2” X 9 5/8” U-BOLTNEW FRONT BRAKELINERELOCATION BRACKETNEW FRONT SHOCKNEW 5/8”

Page 8 - ILLUSTRATION # 8

ILLUSTRATION # 7ILLUSTRATION # 8NEW 3” LIFTED BLOCKNEW 5/8” X 3 1/2” X 12 1/2”U-BOLTSNEW 5/16” X 1”BOLT & HARDWARENEW REAR BRAKE LINERE-LOCATING B

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Tuff-country 13720 - GM 73-87 3/4 ton 3 box kit User Manual

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