Cam Phaser Fix

[fordraptorfun]

TSB 20-2315

2019 Raptor built on Dec 8, 2018.

Finally replaced Cam Phasers after 32k miles.

This is just my case and experience, your symptoms and causes may be different from mine. I’m just another data point

Persistent Symptoms: Cold Start rattle, distinct from wastegate rattle

Intermittent Symptoms: Rough rolling idle, rough standing idle, hesitant acceleration, surging, late shifts, abnormal shifting under load.

New Cam Phaser PNs: Qty 2, HL3Z 6256 CD. Qty 2, HL3Z 6C525 CD (One is intake and the other exhaust)

Phasers replaced under service bulletin TSB 20-2315.

Service advisor and mechanic tell me they’ve already seen cases of these PNs failing the same way as the old. Say they’ve only seen it on 3.5L EcoBoosts (even non-Raptor), but not the 2.7L.

Suspected failure mode: broken locking pin that holds the phaser in the fully retarded position before oil pressure is achieved. Oil pressure then overcomes coil spring force to disengage the pin so Variable Camshaft Timing (VCT) can occur.

My mitigation: disable auto start/stop to reduce the number of times that pin bears load before oil pressure is achieved.

https://www.instagram.com/p/CI1JsjJhiEs/?igshid=1s66isy2mu8cu

 

[Predator_Raptor]

TSB 20-2315

2019 Raptor built on Dec 8, 2018.

Finally replaced Cam Phasers after 32k miles.

This is just my case and experience, your symptoms and causes may be different from mine. I’m just another data point

Persistent Symptoms: Cold Start rattle, distinct from wastegate rattle

Intermittent Symptoms: Rough rolling idle, rough standing idle, hesitant acceleration, surging, late shifts, abnormal shifting under load.

New Cam Phaser PNs: Qty 2, HL3Z 6256 CD. Qty 2, HL3Z 6C525 CD (One is intake and the other exhaust)

Phasers replaced under service bulletin TSB 20-2315.

Service advisor and mechanic tell me they’ve already seen cases of these PNs failing the same way as the old. Say they’ve only seen it on 3.5L EcoBoosts (even non-Raptor), but not the 2.7L.

Suspected failure mode: broken locking pin that holds the phaser in the fully retarded position before oil pressure is achieved. Oil pressure then overcomes coil spring force to disengage the pin so Variable Camshaft Timing (VCT) can occur.

My mitigation: disable auto start/stop to reduce the number of times that pin bears load before oil pressure is achieved.

https://www.instagram.com/p/CI1JsjJhiEs/?igshid=1s66isy2mu8cu

Thanks for posting this. I had heard the same and was why I pulled out of my Raptor order (currently waiting to see what the updated model gets for an engine and then make my choice).
Since even these updated parts failed, does it mean that there truly is an oil feed/flow/pressure issue? Obviously other components rely on oil pressure, so I wonder if this is on a dedicated pressure circuit, or it may be too long of a run to get the pressure up. It sounds like this oil path needs rethought.

 

[FordTechOne]

TSB 20-2315

2019 Raptor built on Dec 8, 2018.

Finally replaced Cam Phasers after 32k miles.

This is just my case and experience, your symptoms and causes may be different from mine. I’m just another data point

Persistent Symptoms: Cold Start rattle, distinct from wastegate rattle

Intermittent Symptoms: Rough rolling idle, rough standing idle, hesitant acceleration, surging, late shifts, abnormal shifting under load.

New Cam Phaser PNs: Qty 2, HL3Z 6256 CD. Qty 2, HL3Z 6C525 CD (One is intake and the other exhaust)

Phasers replaced under service bulletin TSB 20-2315.

Service advisor and mechanic tell me they’ve already seen cases of these PNs failing the same way as the old. Say they’ve only seen it on 3.5L EcoBoosts (even non-Raptor), but not the 2.7L.

Suspected failure mode: broken locking pin that holds the phaser in the fully retarded position before oil pressure is achieved. Oil pressure then overcomes coil spring force to disengage the pin so Variable Camshaft Timing (VCT) can occur.

My mitigation: disable auto start/stop to reduce the number of times that pin bears load before oil pressure is achieved.

https://www.instagram.com/p/CI1JsjJhiEs/?igshid=1s66isy2mu8cu

The updated part number cannot fail in the same manner as the original because the design is different. Your truck was build with the engineering level CC part. The parts they installed were the revised CD level service part. They look the same on the outside but the internal design is different. The dealer is probably referring to repeat repairs they performed before the CD part was available. I have not seen any reports of a failure occurring with the new design.

 

[FordTechOne]

Thanks for posting this. I had heard the same and was why I pulled out of my Raptor order (currently waiting to see what the updated model gets for an engine and then make my choice).
Since even these updated parts failed, does it mean that there truly is an oil feed/flow/pressure issue? Obviously other components rely on oil pressure, so I wonder if this is on a dedicated pressure circuit, or it may be too long of a run to get the pressure up. It sounds like this oil path needs rethought.

@Kuan?? Is that you??

I find it hard to believe that you cancelled an order for a 2020 over an issue that affects a very small population of overall trucks and was corrected in production (Engineering CD level) last year. When did you place your order?

The only thing that needs a “re-thought” is your speculation. This failure mode has absolutely nothing to do with oil pressure. It’s the result of the locking pin not properly engaging on shutdown, which causes the phaser to rattle on cold start until it receives oil pressure.

 

[Roscoe S]

The updated part number cannot fail in the same manner as the original because the design is different. Your truck was build with the engineering level CC part. The parts they installed were the revised CD level service part. They look the same on the outside but the internal design is different. The dealer is probably referring to repeat repairs they performed before the CD part was available. I have not seen any reports of a failure occurring with the new design.

Do you know if there is some actual date that Ford started putting in the updated part? Just wondering because I have a 2019 that appears to have built in late April 2019. I appreciate your knowledge.

 

[FordTechOne]

Do you know if there is some actual date that Ford started putting in the updated part? Just wondering because I have a 2019 that appears to have built in late April 2019. I appreciate your knowledge.

There were 2 updates. All trucks built after July 2018 have the updated engineering CC level part. That update resolved the issues seen on the earlier parts. Very few of those fail relative to the overall population. All trucks built after October 2019 have the engineering CD level part, which had a design change to eliminate the chance of the issue occurring. The TSB includes all models up until 10/19 to standardize the labor time and parts list.

 

[Predator_Raptor]

@Kuan?? Is that you??

I find it hard to believe that you cancelled an order for a 2020 over an issue that affects a very small population of overall trucks and was corrected in production (Engineering CD level) last year. When did you place your order?

The only thing that needs a “re-thought” is your speculation. This failure mode has absolutely nothing to do with oil pressure. It’s the result of the locking pin not properly engaging on shutdown, which causes the phaser to rattle on cold start until it receives oil pressure.

I did cancel my order - a year ago. I was not interested in questioning the reliability.
So, what needs fixed if oil pressure does not solve the problem? Are you saying the spring is not designed properly for the pin?

 

[FordTechOne]

I did cancel my order - a year ago. I was not interested in questioning the reliability.
So, what needs fixed if oil pressure does not solve the problem? Are you saying the spring is not designed properly for the pin?

@Kuan is back. This time he’s a female from Ohio.

 

[fordraptorfun]

Any pictures of the differences between a “CC” phaser and a “CD” phaser?

 

[FordTechOne]

Any pictures of the differences between a “CC” phaser and a “CD” phaser?

The changes are internal. They look the same from the outside.