5NP-R9H6X-07

GROUP
NUMBER
SUSPENSION
DATE
Technical Service Bulletin
SUBJECT:
17-SS-002
MODEL(S)
JUNE, 2017
EQUUS (VI)
EQUUS (VI) REAR AIR SPRING PART SUPERSESSION
INFORMATION
Description: This bulletin provides information regarding changes to the 11-12MY VI Equus rear
spring service parts. The service part numbers for the rear left and rear right air spring assemblies
have been superseded according to the Parts Information table below. There are some physical
differences (top hat angle, air bladder dimensions). These changes have no impact on parts
compatibility. Please use the new part numbers when replacing these parts.
Applicable Vehicles: 11-12MY Equus (VI) vehicles.
Parts Information:
PART NAME
Left Rear Air Spring Assembly
Right Rear Air Spring Assembly
BEFORE
55350-3M500
55360-3M500
AFTER
55350-3M501
55360-3M501
QTY
1
1
Warranty Information:
MODEL OP CODE
OPERATION
55350R0B Spring-Rear (Both Sides)
VI
55800A00 Air-Suspension Air Filling
OP TIME
Refer to WEBDCS
for current LTS time
CAUSAL NATURE CAUSE
PART
CODE CODE
553503M501
558803N000
N89
C38
Circulate To: General Manager, Service Manager, Parts Manager, Warranty Manager, Service
Advisors, Technicians, Body Shop Manager, Fleet Repair
EQUUS (VI) REAR AIR SPRING PART INFORMATION
SUBJECT:
Service Procedure: Rear Air Spring Service Notes
NOTICE
The below notes are for informational purposes only. For instructions on rear air spring
replacement, please refer to the applicable shop manual procedures.
NOTICE
When replacing an older version rear air spring, make sure to replace both left and right
springs at the same time. This will ensure both sides of the rear suspension are of the same
type.
1.
Dimensions of the new service parts have
changed. The air spring assembly is longer
and the diameter is smaller than the original
parts.
NOTICE
The images shown are with the
dust boots removed and are for
illustrative purposes only.
Do not disassemble or extend
the air spring assemblies.
2.
The top of the new air-springs are angled
differently than the original parts. This can
be seen when positioning the air fitting
facing the same direction. This is normal.
TSB #: 17-SS-002
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3.
EQUUS (VI) REAR AIR SPRING PART INFORMATION
Always discharge the air before removing
rear air springs using the GDS Tablet.
The air discharge can be found under:
“S/W Management -> Air Filling/Venting
Setup -> Venting Air Springs/Struts ->
Venting Rear Spring (RL + RR).”
4a.
When handling the new air springs, take
care to not excessively twist/bend/extend the
assemblies. Doing so can distort the air
bladder.
The image to the right shows evidence of a
distorted air bladder, after introducing air
pressure.
TSB #: 17-SS-002
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EQUUS (VI) REAR AIR SPRING PART INFORMATION
4b.
The image to the right shows an example of
a properly installed and pressurized air
spring, with no dust boot distortion.
5.
Check the system air mass using GDS. The
minimum value should be 80 bar-liter.
The air mass check can be found under:
“S/W Management -> Checking Air Pressure
System -> Air Pressure Check.”
If the system is below 80 bar-liter, fill the
system with air according to the procedures
described in TSB 12-SS-003.
TSB #: 17-SS-002
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6.
EQUUS (VI) REAR AIR SPRING PART INFORMATION
After replacing the rear air springs, fill them
with pressurized air using the GDS.
The air discharge can be found under:
“S/W Management -> Air Filling/Venting
Setup -> Filling Air Spring/Struts -> Filling
Rear Left (& Right) Spring.”
7.
After filling springs with air, lower vehicle to
the ground. Start the engine and check and
clear any DTCs.
Verify proper suspension operation with the
engine running.
Cycle the ride height from “normal” to “high”
3 times using the button on the console.
Set the ride height to “normal.”
8.
Recalibrate the vehicle height sensors.
Refer to TSB 12-SS-003 for information on
calibration of air suspension system.
TSB #: 17-SS-002
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