JHM B6 B7 S4 Mechanical Adjuster Repair Kit - Informational / How To Video
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- เผยแพร่เมื่อ 5 ต.ค. 2024
- Introducing the JHM Mechanical Adjuster Repair Kit!
Another exclusive, cost effective repair solution for your B6-B7 S4 brought to you by the V8 specialists at JHMotorsports! Not only will our repair kit fix your bad mechanical adjuster, it costs half the price of OEM!!! (As of 5-15-2014, retail pricing was $745.50 per adjuster unit). If that wasn't enough, our part is better than OEM and will prevent future premature wear issues.
The 4.2L 40v V8 in the B6-B7 S4 (and some C5-A6 allroads), is notorious for having a failure prone timing chain system. One of the most problematic pieces of this system is the mechanical cam adjuster. These adjusters are located on the end of each intake camshaft. This mechanical cam adjuster moves the cams to optimize the airflow into the combustion chambers either at idle and low speeds or for top end, high-rpm power.
The mechanical cam adjuster is essentially a two piece unit but in true Audi fashion, you can't buy the pieces separately! One piece or side of the adjuster has a hardened pin on it (shown in the picture below).
At lower RPM and idle that pin is driven into the hole located on the sprocket side of the adjuster - the part of the adjuster that we replace in our repair kit. This optimizes the camshaft profile for idle and low speed engine operation. At higher RPM, oil pressure is applied to the mechanical adjuster via the electric actuator to release the pin which retards the camshaft slightly to provide more top end power. The hole on the sprocket side of the adjuster begins to wallow out and the pin can no longer stay in the hole when it's supposed to. This has the effect of making the motor run like it would if you had a 'race cam' running at idle - you get a lot of misfires and low compression numbers on the bank or banks of the motor with the bad actuator.
On motors with camshaft adjusters that are really far worn out, the bad adjusters can cause a loud clacking or knocking noise on startup. This noise is worse than the normal chain rattle. Eventually, a bad mechanical adjuster will cause the ECU to have one or more of the following codes:
16405 - Bank 2: Camshaft A (Intake), P0021 - 008 - Retard Setpoint not Reached (Over-Advanced) - MIL ON
17755 - Camshaft Position Sensor 2 (G163) / Engine Speed Sensor (G28), P1347 - 001 - Incor. Correl. - MIL ON
17748 - Camshaft Position Sensor (G40) / Engine Speed Sensor (G28), P1340 - 001 - Incor. Correlation - MIL ON
The failure of these adjusters shown above is the result of a quality control issue with Audi's tolerance range for the hardness of the metal used to make the sprocket side of the adjuster. As shown above, the tolerances can vary by so much that even the same car can have an adjuster on one side of the motor that's wearing normally while the other adjuster has completely failed. This is exactly what our JHM Mechanical Adjuster Repair Kit was designed to address. The JHM Mechanical Adjuster Sprocket is precision ground, CNC machined, and harder than the OEM unit it replaces.
TESTING AND INSTALLATION:
We've been testing our mechanical adjusters since early 2013 and the results have been great. They install just like the factory cam sprocket. All you have to do is disassemble your OEM adjuster unit, discard the failed sprocket piece, replace it with the JHM precision ground and CNC machined unit, and re-assemble the adjuster!
![⚔️จำกัดเวลา⚔️ [พากย์ไทย] ซอร์ดอาร์ตออนไลน์ ซีซั่น 1 - ฉบับมัดรวมทุกตอน](http://i.ytimg.com/vi/ohkfBVDXLSA/mqdefault.jpg)
Hi, Im about to do this, but I can't hear how much torq I should apply when putting it back.
I mean the 5 small screws
will this fit 2005 audi c6 a6 4.2 bnk
yes
Do these ever actually completely fail? And damage other parts of the engine? I.e. such poor timing that valves with collide or the timing is so off it simply won't run? It appears my tensioners are bad as well and I'm trying to determine if they are worth pulling the motor to replace.
Yes, if neglected long enough it can cause major damage. Shoot an email over to sales@JHMotorsports.com
Love this, I totally want to rebuild one of these engines, but what does a full rebuild cost usd, or cnd?
about 5K USD.
will this cause a p0019?
And very nice product
I can't find this and several other items on the site. Have you stopped making these?
They are still available! Do you have the wrong vehicle selected? Try clearing your vehicle and searching.
jhmotorsports.com/shop/catalog/jhm-mechanical-cam-adjuster-repair-kit-pair-for-b6-b7-s4-c5-allroad-42l-p-2314.html
+JH Motorsports, Inc. (JHM) How hard is this to remove/replace the adjuster in-car? My car has bank 1 basically all dead/misfiring. I have had no choice but to be driving it since I can't lose transportation to work. Hopefully that's not causing any serious damage....
One question , is there a kit also for the Audi A4 B6 ,2.0 non turbo engine with the engine code ALT?
If there is we don't make it unfortunately.
I don't see this available for Q7 BAR. Am I missing it?
We offer these for the 40V non FSI engines. Typically on the FSI 32V we do not see timing related failures.
Does this kit fit an R32 bub ?
do you guys have any of those plastic washers @ 14:24? any solution to replacing them if they are broken? thanks for the video
Shoot us an email! Sales@JHMotorsports.com
I would like to replace this plastic washer too! Have you got an Oem number?
birosheep@freemail.hu Sheep81 hey bud Worst case scenario just throw in the spring without the washer. ive taken apart other cam sprockets before and they dont have one. audi does not sell them separately. its main purpose it to keep the spring centered but really there is very little room for movement. it'll be okay
Just bought 2004 b6 s4 cabriolet for cheap. Fixed oil leaks but has codes P0345, P0346, P1347, P1577, P0300, P0305, P0306.
Anyone run into a neglected 4.2 by any chance? Any info much appreciated!!
Is this engine in or engine out?
The engine must always come out.
Don't need
LOL
I've tried with engine in on 05 A6 C6 4.2, it was pretty difficult to get all the cover bolts to get to cam adjuster. I ended up dropping the engine out and doing it that way.
th-cam.com/video/moq7Sf_vjXM/w-d-xo.html I changed the timing chain tensioner and the chain and i steel have this sound. I don't have any errors. Can be the adjuster? How can I test It? Thank you!
Engine can be in car i did that Thing without Engine take out
+Maciej Królak How? the timing chain/adjusters are against the firewall...
thats not a problem...
just need to take off all manifold and oil cover