SB 485

Subject: A/C Compressor Belt Replacement
Field Change Program:
Field Campaign
Coach Section:
16- Heating & A/C
FCP Number:
Revision:
485
A
P/N:
08-27-1357
Date:
09/17/2020
Type:
Product Integrity
Application:
Coach Model
Model Year
VIN
J4500
2019 - 2021
69529 - 69705, 69707 - 69909, 69911 - 69922, 69953,
69954
This field campaign does not necessarily apply to all the above-mentioned coaches.
The owners of the coaches affected by this field campaign will be advised by a letter
indicating the Vehicle Identification Number (VIN) of each applicable coach.
Read this entire procedure before beginning work.
Use Safe Shop Practices at All Times.
To avoid personal injury:
a. Proper Personal Protective Equipment (PPE) must be worn. Safety glasses and
protective gloves are required for working with DEF Fluid.
b. Turn the main battery disconnect switch to the OFF position.
c. Ensure that both the front and the rear wheels are chocked.
d. Position the ENGINE RUN and ENGINE START switches on the engine
compartment remote control box to the OFF position.
e. Allow enough time for components to cool down prior to working in the engine
compartment.
FCP 485
A/C Compressor Belt Replacement
1.0 Description
Customer complaint:
Motor Coach Industries (“MCI”) has become aware that A/C compressors on certain
J4500 coaches are making excessive noise and vibration.
Cause:
The A/C compressor belt drive system may result in vibration transferred to the coach
frame, possibly resulting in noise and passenger discomfort.
Corrective action:
MCI recommends owners of the affected coaches have the following procedure
performed as soon as possible to replace the A/C compressor belt.
2.0 Material requirements
ITEM
1
PART NO
08-27-1538
QTY U/M
1
EA
DESCRIPTION
Belt-A/C Compr, 5VX, matched set
3.0 Special tools
Rachet strap (Vendor: U-Line, VPN: H-2068) or MCI Tensioner Compressor tool, P/N:
20-13-6675.
Belt alignment tool (Vendor: VibrAlign, VPN: 100-BH2)
Belt alignment tool
Motor Coach Industries Ltd.
Rachet Strap
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FCP 485
A/C Compressor Belt Replacement
4.0 Procedure
Open the engine door using the latch behind the curbside service door.
Rotate the lever
counterclockwise
Use a ratchet strap or MCI tensioner compressor tool, P/N: 20-13-6675, to clasp the AC
belt tensioner. Remove and discard the A/C belt.
Remove and discard
the belt using ratchet
strap or MCI tensioner
compressor tool, P/N:
20-13-6675
Spring is under compression and in tension.
To prevent personal injury, use caution while using ratchet.
Motor Coach Industries Ltd.
Page 3 of 8
FCP 485
A/C Compressor Belt Replacement
Remove and discard the double groove belt on the AC compressor.
Remove and
discard the belt
Install single groove matched belts, MCI P/N: 08-27-1538, as shown below.
Install single groove
matched belts, 0827-1538
Remove the ratchet strap or MCI tensioner compressor tool, P/N: 20-13-6675, from the
AC belt tensioner.
Remove the ratchet
strap or MCI tensioner
compressor tool, P/N:
20-13-6675
Motor Coach Industries Ltd.
Page 4 of 8
FCP 485
A/C Compressor Belt Replacement
5.0 Verification
Use the belt alignment tool to verify alignment of AC compressor pulley to the pulley on
the crankshaft following the instructions in the maintenance manual section 16A-2.
Laser line on the tool
Motor Coach Industries Ltd.
Page 5 of 8
FCP 485
A/C Compressor Belt Replacement
6.0 Field Change Program Conditions:
The parts required for this change will be supplied without charge.
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 September 16, 2021.
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
Motor Coach Industries Ltd.
Page 6 of 8
FCP 485
A/C Compressor Belt Replacement
5.1 MCI FIELD CHANGE PROGRAM (FCP) VERIFICATION
CONTACT INFORMATION
CUSTOMER NAME:
____________________________________________________
(PLEASE PRINT)
FCP INFORMATION – ONE FORM PER UNIT
FCP#: _________
Coach Model ___________
COACH SERIAL #:
Model Year _______________
DATE COMPLETED __ / __ /____
(At least the last 5 digits)
MILEAGE:
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:
Motor Coach Industries Ltd.
Page 7 of 8
FCP 485
A/C Compressor Belt Replacement
FAX TO: 800-360-8886
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.
Motor Coach Industries Ltd.
Page 8 of 8