TSB190059 – Water Pump Belt Squeal or Jump on Front End Accessory Drive

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NHTSA ID Number: 10162097

Manufacturer Communication Number: TSB190059-050320

Summary

This Technical Service Bulletin describes the verification and resolution of water pump belt squeal or jump on front end accessory drive. A shorter water pump drive belt was introduced to increase belt tension, reduce belt squeal, and belt jumping teeth on idler.

 

2 Affected Products

Equipments

BRAND PART NO. PRODUCTION DATES
CUMMINS B6.7
CUMMINS ISB6.7

 


Technical Service Bulletin

Technical Service Bulletin:

TSB190059

Released Date: 03-May-2019
Water Pump Belt Squeal or Jump on Front End Accessory Drive

 

Water Pump Belt Squeal or Jump on Front End Accessory Drive

 

Warranty Statement

The information in this document has no effect on present warranty coverage or repair practices, nor does it authorize TRP or Campaign actions.

 

Contents

Product Affected

Engine:

  • 7 CM2350 B135B
  • 7 CM2350 B103

Option:

  • WP97431

 

Description of Change

A new water pump drive belt part number is now available.

 

Reason for Change

A shorter water pump drive belt was introduced to increase belt tension, reduce belt squeal, and belt jumping teeth on idler.

 

Service Instructions

When water pump drive belt service interval or malfunction occurs, use new water pump drive belt part number in Table 1 below.

See Table 1 below.

 

Service Parts Availability

Service parts are available. See Table 1 for part numbers.

Table 1, Service Parts
Part
Description
Existing Part
Number
Obsolete Superseded New Part
Number
V, Ribbed Belt 4941303 No No 4940003

 

Production Status

Implemented for production. See Table 2.

Table 2, Production Information
ESN First Build Date1 Plant
22326780 14 August 2018 Darlington Engine Plant
1Engine build date can be found on the engine dataplate.

 

Document History

Date Details
Module Created Module Created

 

Last Modified: 03-May-2019


Technical Service Bulletin:
TSB190059

https://www.nhtsa.gov/recalls?nhtsaId=10162097

https://static.nhtsa.gov/odi/tsbs/2019/MC-10162097-9999.pdf

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