Network Computing Devices NCD-5988-2 User Manual

INSTALLATION INSTRUCTIONS

2101

WARNING:

Do not inflate this assembly when it is unrestricted.
The assembly must be restricted by the suspension
or other adequate structure. Do not inflate beyond
100 P.S.I. Improper use or over inflation may cause
property damage or severe personal injury.

Congratulations - your new Air Helper Springs are quality
products capable of improving the handling and comfort of your
vehicle. As with all products, proper installation is the key to
obtaining all of the benefits your kit is capable of delivering.
Please take a few minutes to read through the instructions to
identify the components and learn where and how they are used.
It is a good idea to start by comparing the parts in your kit with
the parts list below.

The heart of the air helper spring kit is, of course, the air
helper springs. Remember that the air helper springs must flex
and expand during operation, so be sure that there is enough
clearance to do so without rubbing against any other part of the
vehicle.

Be sure to take all applicable safety precautions during the
installation of the kit. The instructions listed in this brochure
and the illustrations all show the left, or driver’s side of the
vehicle. To install the right side assembly simply follow the same
procedures.

PARTS LIST

Your kit includes separate inflation valves and air lines for
each air helper spring. This will allow you to level your vehicle
from side to side as well as from front to back. If you would rather
have a single valve inflation system, your dealer can supply the
required "T" fitting.

IMPORTANT!

For your safety and to prevent possible damage to your
vehicle, do not exceed the maximum load recommended by the
vehicle manufacturer (GVWR). Although your Air Helper
Springs are rated at a maximum inflation pressure of 100 P.S.I.,
this pressure may allow you to carry too great a load on some
vehicles. Check your vehicle owner’s manual for maximum
loads listed for your vehicle.

When inflating your Air Helper Springs, add air pressure
in small quantities, checking pressure frequently during
inflation. The air spring requires much less air volume than
a tire and, therefore, inflates much quicker.

267C AIR SPRING 6781 2
UPPER BRACKET (RIGHT) 5157 1
UPPER BRACKET (LEFT) 5158 1
LOWER BRACKET 5159 2
AXLE STRAP 1163 2
HEAT SHIELD 1004 1
3/8" -16 x 1" HEX BOLT 4
3/8" -16" x 3" CARRIAGE BOLT 4
3/8" -16 FLANGED LOCK NUT 1 2
3/8" -16 x 3/4" HEX BOLT 2
1/4" -20 x 1" HEX BOLT 2
1/4" FLAT WASHER 4

21-8156 12-03 NCD-5988-2

3/8" LARGE FLAT WASHER 4

1/4" LOCK WASHER 2

1/4" HEX NUT 2

PUSH-TO-CONNECT

MALE AIR FITTING 3046 2

PUSH-TO-CONNECT

INFLATION VALVE 3032 2
5/16" FLAT WASHER 4
AIR LINE TUBING 1
NYLON TIE 6
THERMAL SLEEVE 2

2101

KIT ASSEMBLY

FIGURE "A"

NOTE: Both illustrations are of the left, or drivers
side, of the vehicle. Reverse any orientations when
assembling and installing the right, or passenger, side
of the vehicle.

1/4” -20 x 1”

HEX BOLT

1/4” FLAT

WASHER

3/8” -16

FLANGED

HEX NUT

3/8” LARGE

WASHER

(SEE NOTE 1)

KIT TO FRAME ASSEMBLY

FRAME

1/4” FLAT
WASHER

1/4” LOCK
WASHER

1/4” -20
HEX NUT

3/8” LARGE
WASHER

(SEE NOTE 1)

AIR LINE

3/8” -16”
FLANGED
HEX NUT

UPPER BRACKET

AIR SPRING

3/8” -16
FLANGED
HEX NUT

FITTING

AIR

USE THIS HOLE

FOR 2WD

VEHICLES

USE THIS

HOLE FOR

4WD VEHICLES

3/8” -16 x 3”
CARRIAGE BOLT

WHEEL

3/8” -16 x 1”
HEX BOLT

AXLE STRAP

FRONT

3/8” -16 x 3”

CARRIAGE

BOLT

3/8” -16 x 1”
HEX BOLT

LEAF STACK

AXLE

LOWER
BRACKET

3/8” -16 x 3/4”
HEX BOLT

NOTE 1:

Use 3/8 large flat washer
between upper bracket and
frame rail only if rivet head is
present on bottom of frame.
Rivet head will prevent flush
mounting of the upper bracket
to the frame rail.

3/8” -16
FLANGED LOCK NUT