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Neway ADZ Serie Manuel D'entretien page 20

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Component Replacement Instructions
9. Air Spring Replacement
IMPORTANT: Air springs MUST be replaced with the proper
air spring for vehicle installation. Replacement
air springs are available through
SAF-HOLLAND
flexible member and piston for part number. If
the part number is unidentifiable, contact the
vehicle OEM for assistance or SAF-HOLLAND
Technical Service at 888-396-6501.
1.
With the vehicle unloaded and/or trailer disconnected
on a level surface, chock the front tires to prevent the
vehicle from rolling forward or backward.
2.
Support the vehicle frame with the jack stands (Figure 23).
Failure to properly support the suspension
during servicing could allow the suspension
to fall which, if not avoided, could result in
death or serious injury.
3.
Using a floor jack support the axle at the axle bowl (Figure 23).
4.
Exhaust all air from the system by disconnecting the link
from the lower connection of the height control valve and
pulling down on the link (Figure 24). Refer to the height
control valve manufacturer's instructions for further information.
5.
Disconnect the air supply line from the air spring.
NOTE: If the air spring has a leak and is deflated, Step 4
must still be performed.
6.
Remove the frame rail and lower air spring mounting
plate fastening hardware and remove the old air spring
assembly (Figure 25).
NOTE: ADZ-123-12 and all ADZ-126 Series have an upper
air spring mounting plate bracket and frame
gusset (inside frame). Removal of the air spring
vertical mount nuts is also required to remove the
old air spring assembly (Figure 25).
7.
Install the new air spring assembly to the frame rails and
lower air spring mounting plate and torque the lower air
spring mounting plate fastening hardware according to
the specifications listed in Section 16.
8.
Torque the frame rail fastening hardware per the OEM
recommended torque specifications.
9.
Re-connect the air supply line and height control valve
lower-link connection.
10. Raise the rear of the vehicle using the vehicle's lift points
to remove the jack stands under the vehicle frame. Refer
to procedures provided by the vehicle OEM.
11. Increase the suspension air system reservoir pressure in excess
of 70 psig (4.83 bars) and check for leaks. All air springs should
inflate and raise the suspension to the proper ride height.
12. Check the ride height and make sure it is within ± .25"
(6 mm) of specification and adjust as necessary. Refer to
Section 6 for ride height adjustment information.
13. Check the alignment of the suspension per vehicle OEM
instructions. If realignment is necessary, refer to the
alignment procedures described in Section 7.
20
®
Original Parts. Check the
®
XL-PS10452MM-en-US Rev E · 2024-05-23 · Amendments and Errors Reserved · © SAF-HOLLAND, Inc., SAF-HOLLAND, HOLLAND,
Figure 23
JACK STAND
(BOTH SIDES)
Figure 24
HEIGHT
CONTROL
VALVE
LOWER LINK
CONNECTION
Figure 25
FRAME RAIL
FASTENING
HARDWARE
AIR SPRING
ASSEMBLY
(ADZ-123 ILLUSTRATED)
SAF,and logos are trademarks of SAF-HOLLAND S.A., SAF-HOLLAND GmbH, and SAF-HOLLAND, Inc.
VEHICLE
FRAME RAIL
FLOOR JACK
PLACEMENT
UNDER AXLE
BOWL
LOWER
AIR SPRING
FASTENING
HARDWARE

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Ce manuel est également adapté pour:

Adz 123Adz 126