Technical Service Bulletins

Search 172,063 manufacturer communications covering 879 vehicle makes from 1955 to 2025.

172,063 Unique Bulletins
4,686,952 Total Records
879 Vehicle Makes
1955–2025 Year Range
Clear

Showing 339 bulletins for MCI

ITS-60907 Jan 19, 2024
MCI — D45CRTLE (2020–2023) — 3 vehicle combinations
110000 ELECTRICAL SYSTEM
Instruction to Service for verifying proper electrical connections on coaches equipped with WCLs.
View Full Details
ITS60877 Dec 8, 2023
MCI — J3500, J4500 (2020–2024) — 7 vehicle combinations
110000 ELECTRICAL SYSTEM
Instruction to Service ITS60877 provides instructions to relocate an impact sensor in baggage bay to reduce nuisance activations.
View Full Details
ITS69867 Nov 28, 2023
MCI — D4500, D45CRTLE (2021–2022) — 2 vehicle combinations
110000 ELECTRICAL SYSTEM
Instruction to Service to replace the farebox baseplate to provide additional clearance.
View Full Details
ITS-60825 Oct 3, 2023
MCI — J4500 (2022–2024) — 3 vehicle combinations
160000 STRUCTURE
Instruction to Service to install a spring on condenser door.
View Full Details
ITS60814 Sep 22, 2023
MCI — D4500 (2018–2019) — 4 vehicle combinations
100000 POWER TRAIN
Instructions to change the refrigerant compressor pulley from a single groove to a double groove to improve belt life.
View Full Details
ITS60809 Sep 22, 2023
MCI — D4500 (2017) — 2 vehicle combinations
100000 POWER TRAIN
Instructions to change the refrigerant compressor pulley from a single groove to a double groove to improve belt life.
View Full Details
ITS60801 Sep 7, 2023
MCI — J4500 (2024)
180000 VEHICLE SPEED CONTROL
Instructions to change cruise control recovery parameters.
View Full Details
ITS60791 Sep 6, 2023
MCI — J4500 (2023)
080000 FUEL SYSTEM, DIESEL
Instructions to Service ITS60791 for replacing the existing fuel level sensor with a shorter version for better fuel level reading.
View Full Details
ITS-60713 Jun 15, 2023
MCI — D4520, D45CRTLE (2021–2022) — 2 vehicle combinations
160000 STRUCTURE
Instructions to repair roof-top joint seal on roof panels.
View Full Details
ITS-60727 Jun 7, 2023
MCI — J3500 (2020–2023) — 2 vehicle combinations
060000 ENGINE AND ENGINE COOLING
Instructions to correct an oil leak under the dipstick mounting bracket.
View Full Details
ITS60681 Apr 17, 2023
MCI — J3500 (2020–2021) — 4 vehicle combinations
110000 ELECTRICAL SYSTEM
Instructions to replace the wheelchair lift landing block if damaged.
View Full Details
ITS60660 Mar 7, 2023
MCI — D4000 ISTV, J4500 (2023) — 4 vehicle combinations
060000 ENGINE AND ENGINE COOLING
Instructions to replace fuel supply line clamps on auxiliary coolant heaters.
View Full Details
ITS60634 Feb 10, 2023
MCI — D4520 (2021–2022) — 4 vehicle combinations
160000 STRUCTURE
Instructions to properly adjust entrance door to ensure proper operation.
View Full Details
ITS60624 Feb 2, 2023
MCI — D4520, D45CRTLE, J4500 (2021–2023) — 5 vehicle combinations
080000 FUEL SYSTEM, DIESEL
Instructions for improving fuel tank venting while fueling.
View Full Details
ITS-60597 Dec 22, 2022
MCI — J4500 (2023) — 2 vehicle combinations
160000 STRUCTURE
ITS-60597 provides instructions on inspection, and correction as needed, of welds related to the cable bracket on the front access door.
View Full Details
ITS-60578 Dec 5, 2022
MCI — J3500, J4500 (2022) — 2 vehicle combinations
020000 SUSPENSION
Instructions to check and replace, as needed, certain tag-axle air spring brackets that may have had an incorrect bracket installed. The incorrect bracket could reduce the life of the shock absorbers.
View Full Details
ITS-60577 Dec 5, 2022
MCI — D45CRTLE (2022)
020000 SUSPENSION
Instructions to check and replace, as needed, certain tag-axle air spring brackets that may have had an incorrect bracket installed. The incorrect bracket could reduce the life of the shock absorbers.
View Full Details
TSIB 22-12 Sep 7, 2022
MCI — D45 CRT LE, D45CRTLE, J3500, J4500 (1998–2022) — 38 vehicle combinations
110000 ELECTRICAL SYSTEM
MCI has released Technical Service Information Bulletin (TSIB) 22-12 to address concerns with water ingress in remote switch box. The TSIB provides guidance on how to rework the box to inhibit water intrusion and connector corrosion
View Full Details
TSIB 22-03 May 3, 2022
MCI — D4000, D4000 ISTV, D4000ISTV, D4005, D45 CRT LE, D4500, D4505, J3500, J4500 (2010–2019) — 64 vehicle combinations
220000 SEATS
Technical Service Information Bulletin describing the replacement of seating backrest attachment hardware with the addition of a mechanical lock nut on specifically equipped buses manufactured prior to model year 2020.
View Full Details
TSIB 22-04 May 3, 2022
MCI — D45 CRT LE, D4520, D45CRTLE, J3500, J4500 (2016–2023) — 42 vehicle combinations
110000 ELECTRICAL SYSTEM
Instructions to improve sealing in the front junction box.
View Full Details
TSIB 22-02 Apr 1, 2022
MCI — D4000, D4000 ISTV, D4005, D4500, D4505, D4520, D45CRTLE, J4500 (2019–2022) — 42 vehicle combinations
060000 ENGINE AND ENGINE COOLING
This Technical Service Information Bulletin is a supplemental reminder to all MCI owners/operators of vehicles which are affected by the Cummins Equipment Recall 21E-099 and MCI Vehicle recall 21V-971.
View Full Details
ITS60378 Apr 1, 2022
MCI — D4000 ISTV, D4500 (2016–2022) — 8 vehicle combinations
110000 ELECTRICAL SYSTEM
This Technical Instruction describes how to upgrade the Delco alternator indicator lamp ring terminal.
View Full Details
ITS60421 Mar 17, 2022
MCI — D4000, D4000 ISTV, D4000ISTV, D4005, D45 CRT LE, D4500, D4505, D4520, D45CRTLE, J3500, J4500 (2017–2020) — 124 vehicle combinations
110000 ELECTRICAL SYSTEM
This Instruction to Service (ITS) is a description of the inspections being recommedned by MCI due to the parts shortages which are impacting the repair instructions associated with NHTSA Recall 21V-748. These are the same instructions as o
View Full Details
TSIB 22-01 Feb 4, 2022
MCI — D4000, D4000 ISTV, D4000ISTV, D4005, D45 CRT LE, D4500, D4505, D4520, D45CRTLE, J3500, J4500 (2017–2020) — 62 vehicle combinations
110000 ELECTRICAL SYSTEM
This is an upgrade to Technical Service Information Bulletin TSIB 21-10 issued in January of 2022 which is specific to buses operating in severe duty and or corrosive environments. These bulletins have been issued to recommend interim inspe
View Full Details
TSIB 21-10 Jan 5, 2022
MCI — D4000, D4000 ISTV, D4000ISTV, D4005, D45 CRT LE, D4500, D4505, D4520, D45CRTLE, J3500, J4500 (2017–2021) — 54 vehicle combinations
110000 ELECTRICAL SYSTEM
This Technical Service Information Bulletin describes interim inspection procedures required every 6000 miles on specific motor coaches due to the global parts shortage and subsequent delay in available parts to conduct the corrective actio
View Full Details
1 2 3 4 Next