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Old 06-26-2018, 02:27 PM   #1
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C-9 Valve cover

I have a 2007 C-9 Engine. When I had the valves adjusted I had a new gasket installed. After about 2000 miles I noticed I had oil coming down the starter side of the engine. Got another $100 gasket and replaced it myself. This replacement gasket is really an no brainer just lots of labor. While I had the valve cover off, a composite black one, I noticed that it was warped and figured I would still try it again just to see if the Cat mechanic had "somehow" screwed it up installing it. Still leaking. I saw that there is supposed to be a replacement valve cover that is supposed to be a "long life" valve cover, didn't know that there was any other kind of valve cover that didn't last the length of time of the engine. Has anyone any kind of experience with their valve covers doing the same causing leaking of oil?
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Old 06-26-2018, 06:47 PM   #2
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TAGAXLE, I can't answer your question, sorry. But thanks for the heads up, because I was about to tackle adjusting the valves on my C-9.
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Old 06-26-2018, 07:11 PM   #3
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Yup. Going to tackle mine in a week or so. Didn't know about a different cover.
How long did it take you to R&R the cover?
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Old 06-27-2018, 11:23 AM   #4
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If you have a crankcase breather (not just a straight vent tube like the early engines), there is a filter in the breather. If it clogs up the crankcase pressure will increase and come out wherever there is the least resistance (gasket or seal).
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**Beaver Chassis Info/Types https://1drv.ms/f/s!AtvAXw_lfqbToxXYREK9YdBP08Jn
**Wiring Diagrams (1984-2009):https://1drv.ms/f/s!AtvAXw_lfqbTm0WTuuNqpn9a8hCh
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Old 06-27-2018, 03:50 PM   #5
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True Mike and I do have the breather you mention. It was cleaned each time the valve cover was removed. Good info.
John it will take me about two hours labor to be able to start to remove the valve cover in my FE. After that about another two to remove and replace the cover. Then another two to replace everything. So you are talking a good 6-8 hours on mine and "me" doing it. I have the ACERT engine. So far I haven't been able to get one that will fit. Thanks all for your input. Below is the service bulletin I received:


New service bulletin from CAT Truck Engine News:
An Improved Valve Cover Is Available
for Certain C9 Engines
SMCS Code: 1107; 1120
Engine:
C9 (S/N: MTB1-Up; MFF1-Up; 9DG1-Up;
LFR1-Up)
Truck Engines:
C9 ON-HIGHWAY (S/N: ETK1-Up)
Reference: Refer to Special Instruction, REHS4840
for more information.
Description Of Change: The composite valve cover
has been redesigned for increased service life.
Adaptable To: The updated valve cover must be installed
with the required studs, bolts, and spacers. The
existing studs, bolts, and spacers must not be reused.
Refer to Table 1 for a list of required parts.

Table 1:
Required Parts
Qty New Part Number Part Name Former Part Number
7 211-3445 Studs
358-7872 Valve Mechanism
Cover Gp
263-7825
358-7873 Valve Mechanism
Cover Gp
263-7827
11 358-7876 Spacer Sleeves
11 8T-6912 Bolts

Refer to Table 2 for a list of effective part numbers.
Table 2
Effective Serial Numbers
C9A10939-Up
ETK00589-Up
LFR00101-Up
MFF00479-Up
MTB02021-Up


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Old 06-27-2018, 08:15 PM   #6
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That is as lot of supplemental parts that are needed!. Looks like my SN is within the list.

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Old 06-28-2018, 06:24 AM   #7
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Quote:
Originally Posted by TAGAXLE View Post
Below is the service bulletin I received:
New service bulletin from CAT Truck Engine News:
An Improved Valve Cover is Available
for Certain C9 Engines
SMCS Code: 1107; 1120
Engine:
C9 (S/N: MTB1-Up; MFF1-Up; 9DG1-Up;
LFR1-Up)
Truck Engines:
C9 ON-HIGHWAY (S/N: ETK1-Up)
Reference: Refer to Special Instruction, REHS4840
for more information.

Description Of Change: The composite valve cover
has been redesigned for increased service life.
Adaptable To: The updated valve cover must be installed
with the required studs, bolts, and spacers. The
existing studs, bolts, and spacers must not be reused.
Where did you find out about this service bulletin?
I Googled "CAT service bulletin" and "CAT Truck Engine News" and could not find anything.

I want to see if there have been any service bulletins or upgrades recommended for my C13 ACERT engine.
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**Beaver Chassis Info/Types https://1drv.ms/f/s!AtvAXw_lfqbToxXYREK9YdBP08Jn
**Wiring Diagrams (1984-2009):https://1drv.ms/f/s!AtvAXw_lfqbTm0WTuuNqpn9a8hCh
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Old 06-28-2018, 06:35 AM   #8
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Mike,
I "think" it came from this site but when I tried to find it again yesterday in my e-mail I could not. Anyways CAT always want new bolts washers etc. It is up to the consumer to make that purchase though. Remember this, my valve cover is warped, if yours is not leaking!!!! If you are going to have a valve adjustment I would check the cover to make sure it is not warped.
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Old 06-28-2018, 06:51 AM   #9
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I'm not having any problems now.

I just wanted to know if CAT released anything or redesigned anything after my engine was built. For example, I saw on the Adept Ape (YouTube channel) that the reman injectors where redesigned for the C7 and C9 engines):

Manufacturers releasing Technical Service bulletins for improved servicing/repair procedures or about improved replacement parts (like your valve cover) are common in the automotive industry, I assume that is the case for CAT too. I just have not thought to look before.
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**Beaver Chassis Info/Types https://1drv.ms/f/s!AtvAXw_lfqbToxXYREK9YdBP08Jn
**Wiring Diagrams (1984-2009):https://1drv.ms/f/s!AtvAXw_lfqbTm0WTuuNqpn9a8hCh
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