# Service bulletin TT451

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

- Type: Service bulletin
- NHTSA id: 10195172
- Published by NHTSA: 2021\-06\-07
- Manufacturer's number: TT451
- Manufacturer's date: 2016\-01\-14
- NHTSA component: ENGINE

## NHTSA's summary

Noise from the cam chest area possibly accompanied by milky engine oil. Moisture can cause slight swelling in the tensioner causing it to stick in the housing. A vehicle that makes repeated short trips can have this condition because the engine does not reach normal operating temperatures, allowing condensation and moisture to build up in the engine oil.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2016/MC-10195172-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2016/MC-10195172-9999.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Engine

## Vehicles listed

- 2007 HARLEY\-DAVIDSON FLHP
- 2007 HARLEY\-DAVIDSON FLHPE
- 2007 HARLEY\-DAVIDSON FLHR
- 2007 HARLEY\-DAVIDSON FLHRC
- 2007 HARLEY\-DAVIDSON FLHRS
- 2007 HARLEY\-DAVIDSON FLHRSE3
- 2007 HARLEY\-DAVIDSON FLHT
- 2007 HARLEY\-DAVIDSON FLHTC
- 2007 HARLEY\-DAVIDSON FLHTCU
- 2007 HARLEY\-DAVIDSON FLHTCUSE2
- 2007 HARLEY\-DAVIDSON FLHTP
- 2007 HARLEY\-DAVIDSON FLHX
- 2007 HARLEY\-DAVIDSON FLST
- 2007 HARLEY\-DAVIDSON FLSTC
- 2007 HARLEY\-DAVIDSON FLSTF
- 2007 HARLEY\-DAVIDSON FLSTN
- 2007 HARLEY\-DAVIDSON FLSTSC
- 2007 HARLEY\-DAVIDSON FLTR
- 2007 HARLEY\-DAVIDSON FXCW
- 2007 HARLEY\-DAVIDSON FXD
- 2007 HARLEY\-DAVIDSON FXDB
- 2007 HARLEY\-DAVIDSON FXDC
- 2007 HARLEY\-DAVIDSON FXDL
- 2007 HARLEY\-DAVIDSON FXDSE
- 2007 HARLEY\-DAVIDSON FXDWG
- 2007 HARLEY\-DAVIDSON FXST
- 2007 HARLEY\-DAVIDSON FXSTB
- 2007 HARLEY\-DAVIDSON FXSTC
- 2007 HARLEY\-DAVIDSON FXSTD
- 2007 HARLEY\-DAVIDSON FXSTS
- 2007 HARLEY\-DAVIDSON FXSTSSE
- HARLEY\-DAVIDSON HARLEY\-DAVIDSON
- 2007 HARLEY\-DAVIDSON VRSCA
- 2007 HARLEY\-DAVIDSON VRSCAW
- 2007 HARLEY\-DAVIDSON VRSCAW 105
- 2007 HARLEY\-DAVIDSON VRSCD
- 2007 HARLEY\-DAVIDSON VRSCDX
- 2007 HARLEY\-DAVIDSON VRSCR
- 2007 HARLEY\-DAVIDSON VRSCX
- 2007 HARLEY\-DAVIDSON VRSX
- 2007 HARLEY\-DAVIDSON XL1200C
- 2007 HARLEY\-DAVIDSON XL1200L
- 2007 HARLEY\-DAVIDSON XL1200N
- 2007 HARLEY\-DAVIDSON XL1200R
- 2007 HARLEY\-DAVIDSON XL50
- 2007 HARLEY\-DAVIDSON XL883
- 2007 HARLEY\-DAVIDSON XL883C
- 2007 HARLEY\-DAVIDSON XL883L
- 2007 HARLEY\-DAVIDSON XL883R
- 2007 HARLEY\-DAVIDSON XR1200

JSON: [/v1/bulletins/10195172](/v1/bulletins/10195172)

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