NHTSA ID Number: 10162210
Manufacturer Communication Number: SB 470
TSB/Document Date: 2019-07-08
Summary
This Service Bulletin informs affected owners of model year 2018 J4500 model coaches that the potential exists for water intrusion into the stepwell, dash and driver area from the front marker lights due to current marker light gasket and that MCI
will remedy the affected coaches at no cost to the owners.
Service Bulletin No. 470
Upper Marker Light Gasket Retrofit
MODEL:
TYPE:
SECTION/GROUP:
J Series
Field Change Program
07-Electrical
DATE:
06/10/2019
Customer Complaint:
Motor Coach Industries ("MCI") has become aware that on MY2018-J4500 coaches,
the potential exists for water intrusion into the coach in the stepwell, dash and driver
area from the front marker lights.
Cause:
Current marker light gasket wasn’t avoiding water intrusion into the coach.
Corrective Action:
MCI urges owners of the affected coaches to have the following procedure performed as
soon as possible.
Read this entire procedure before beginning work.
Use Safe Shop Practices At All Times.
To avoid personal injury:
a. Turn the main battery disconnect switch to the OFF position.
b. Ensure that both the front and the rear wheels are chocked.
c. Position the ENGINE RUN and ENGINE START switches on the engine
compartment remote control box to the OFF position.
d. Allow enough time for components to cool down prior to working in the
engine compartment.
Page 1 of 8
Service Bulletin No. 470
Upper Marker Light Gasket Retrofit
1.0
Material requirements:
Service Kit T07-3611 contains the following parts:
ITEM
1
2
3
4
2.0
PART NO.
07-07-1920
19-01-1635
19-03-0602
21-7212-18
QTY
14
28
28
1
U/M
EA
EA
EA
TUB
DESCRIPTION
GASKET – MARKER LIGHT
SCREW – PANHEAD, 10-32x1.5,
NUT-WELL,BRASS INSERT,#10-32 UNF
ADHESIVE-LOCTITE, BLUE
Removing the front marker lights, gaskets, and wellnuts
Remove the 7 front marker lights from the front of the vehicle by removing and
discarding the two 8-32 screws on each light.
Marker Light 07-07-6108
Remove and discard
the existing screws
Disconnect the marker light. Do not let the Deutsch connector fall into the vehicle.
Disconnect the lamp
Do not let the connector
fall into the vehicle.
Page 2 of 8
Service Bulletin No. 470
Upper Marker Light Gasket Retrofit
Peel off the existing gaskets, then push the existing wellnuts out of the holes. Discard
old gaskets and wellnuts.
Peel existing
gasket off
3.0
Push both well-nuts
out
Gasket and
Wellnuts Removed
Installing the well-nuts
Before installing well nuts, enlarge the mounting holes using 3/8 reamer.
Mounting Holes
Using warm water and soap, or a suitable adhesive remover, clean the marker light
area completely.
Clean this area completely
Page 3 of 8
Service Bulletin No. 470
Upper Marker Light Gasket Retrofit
Apply 2 drops of Loctite, 21-7212-18, to the well nuts, 19-03-0602, and insert them
in the mounting holes. Firmly press the well nuts into position into the mounting holes
and let the adhesive dry for 1 minute.
Well nuts inserted in
the mounting holes
4.0 Applying the new gasket
Peel the protective backing off the 07-07-1920 gasket to expose the adhesive and
apply the gasket to the fiberglass, using the screw-holes as a guide.
Remove Protective
Backing from Adhesive
Gasket Applied
Page 4 of 8
Service Bulletin No. 470
Upper Marker Light Gasket Retrofit
5.0
Install the marker lights
Reconnect the Deutsch connector to each marker light. Apply Loctite, 21-7212-182,
to the 19-01-1635 screws and fasten the marker light back to the coach. Do not
exceed 5 Inch-Pounds torque.
Fasten 19-01-1635
Screws to 5 Inch-Pounds
6.0
Updating the Rear Marker Lights
Repeat sections 1 through 4 for rear marker lights.
Marker Light 07-07-6107
Procedure complete
Motor Coach Industries Ltd.
Page 5 of 8
Service Bulletin No. 470
Upper Marker Light Gasket Retrofit
7.0
Field Change Program Conditions:
The parts required for this change will be supplied without charge.
A labor allowance of 1 hour will be granted for performing this procedure.
This labor allowance will be credited to your MCI Fleet Support Parts Account on receipt
of the attached “MCI Field Change Program Verification Form” and a “Warranty Claim
Form” as detailed in your Owner Warranty manual to MCI’s Warranty department. A
“MCI Field Change Program Verification Form” needs to be submitted for each VIN
affected. Photocopy the attached “MCI Field Change Program Verification Form” as
required for the number of affected coaches in your fleet.
This program will end on August 31, 2019.
Motor Coach apologizes for any inconvenience resulting from this campaign, but urges
you to implement this change as soon as possible.
Sincerely,
Motor Coach Industries.
Page 6 of 8
Service Bulletin No. 470
Upper Marker Light Gasket Retrofit
7.1
MCI FIELD CHANGE PROGRAM (FCP) VERIFICATION
CONTACT INFORMATION
CUSTOMER NAME:
____________________________________________________
(PLEASE PRINT
FCP INFORMATION – ONE FORM PER UNIT
FCP#: _________
_______________
Coach Model ___________
COACH SERIAL #:
(At least the last 5 digits)
MILEAGE:
Model Year
DATE COMPLETED __ / __ /__
IMPORTANT: TO RECEIVE CREDIT FOR ANY ALLOWABLE LABOR CHARGES,
THIS VERIFICATION FORM MUST BE RETURNED TO MCI UPON COMPLETION OF
THE FCP.
SUBMITTED BY: (Please Print)
________________________________________________________________
__ / __ /__
DATE
TITLE: (Please Print) _____________________________________________
SIGNATURE:
________________________________________________________________
COMMENTS:
FAX TO: 800-360-8886
Page 7 of 8
Service Bulletin No. 470
Upper Marker Light Gasket Retrofit
Mail or fax the completed limited warranty claim form and verification form to MCI’s
warranty department, or photocopy and mail to:
MCI Fleet Support
Attn: Warranty Department
7001 Universal Coach Drive Louisville, KY 40258
Fax Number 1-800-360-8886
To receive credit for the hours used to complete this task. Contact the MCI Fleet
Support Technical Center at 1-800-241-2947 for any further information.
Page 8 of 8
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TSB/Document ID: SB 470
Replacement Service Bulletin Number:
MFR Communication Date: 2019-06-10
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: ENGINE AND ENGINE COOLING
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