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Old 06-15-2013, 05:11 PM   #41
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Re: mysterious knocking

What did they do to fix the sprayer? Its only cylinder five that broke. chain looks good but the tensioner is weak. I poped off the old one but I'm trying to get front cover off now so ill be able to put new one back on. However I cam break the crank pulley loose yet.

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Old 06-15-2013, 05:12 PM   #42
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Re: mysterious knocking

See the mark in hard line? That's were chain was hitting.

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Old 06-15-2013, 11:21 PM   #43
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Originally Posted by InDiGlOM3 View Post
What did they do to fix the sprayer? Its only cylinder five that broke. chain looks good but the tensioner is weak. I poped off the old one but I'm trying to get front cover off now so ill be able to put new one back on. However I cam break the crank pulley loose yet.

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Here's a response from a while back...they changed the design a long time ago...a really long time ago

"Product: HPF Stage 3
Problem: Jan 2011 - Motor burns excessive oil
Diagnosis: Customer had early piston design which didn't have the correct clearance for oil squirters. Pistons eventually came in contact with squirters and oil pressure dropped.
Customer Service: Customer removed engine and shipped to HPF. HPF provided brand new OEM block and all new internals. Disassembled and resassembled new motor for free and paid for all machine work and shipping back to the customer.
Product Change: Piston design was already changed to account for this on all subsequent built motors.
Link: None"
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Old 06-15-2013, 11:22 PM   #44
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Originally Posted by InDiGlOM3 View Post
See the mark in hard line? That's were chain was hitting.

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Shitty...just the chain getting loose over time.
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Old 06-15-2013, 11:29 PM   #45
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Shitty...just the chain getting loose over time.
There's a tensioner for that chain (black piece right above the chain in the picture he posted). You can damage the tensioner if you don't take up the chain slack when loosening the nut on the oil pump (it's reverse threaded).

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Old 06-15-2013, 11:33 PM   #46
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There's a tensioner for that chain (black piece right above the chain in the picture he posted). You can damage the tensioner if you don't take up the chain slack when loosening the nut on the oil pump (it's reverse threaded).
Ah, good to know.
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Old 06-16-2013, 01:31 PM   #47
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Re: mysterious knocking

Quote:
Originally Posted by dan avoN7 View Post
There's a tensioner for that chain (black piece right above the chain in the picture he posted). You can damage the tensioner if you don't take up the chain slack when loosening the nut on the oil pump (it's reverse threaded).
Yeah the tensioner is just worn out. I figured this before I even started opening the engine up. but i don't see how you can really damage it. the dowel pin is worn down a bit too. Unless there is something broken on plastic part I just didn't notice. new parts on their way.

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Old 06-16-2013, 01:33 PM   #48
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Re: mysterious knocking

Quote:
Originally Posted by Commanderwiggin View Post
Here's a response from a while back...they changed the design a long time ago...a really long time ago

"Product: HPF Stage 3
Problem: Jan 2011 - Motor burns excessive oil
Diagnosis: Customer had early piston design which didn't have the correct clearance for oil squirters. Pistons eventually came in contact with squirters and oil pressure dropped.
Customer Service: Customer removed engine and shipped to HPF. HPF provided brand new OEM block and all new internals. Disassembled and resassembled new motor for free and paid for all machine work and shipping back to the customer.
Product Change: Piston design was already changed to account for this on all subsequent built motors.
Link: None"
Well im guessing that this one sprayer was just installed wrong. Since all others are good. will make sure nothing is touching before I'm done.

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Old 06-16-2013, 01:51 PM   #49
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Well im guessing that this one sprayer was just installed wrong. Since all others are good. will make sure nothing is touching before I'm done.

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From my understanding the oil squirters didn't allow enough clearance for the initial piston design...I would imagine there could be some potential for future issues otherwise. Call Brian@M&B to find out all the details, he'll fill you in.
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Old 06-16-2013, 03:46 PM   #50
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mysterious knocking

Quote:
Originally Posted by InDiGlOM3 View Post
Yeah the tensioner is just worn out. I figured this before I even started opening the engine up. but i don't see how you can really damage it. the dowel pin is worn down a bit too. Unless there is something broken on plastic part I just didn't notice. new parts on their way.

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I appreciate ur posting this and ur other resolutions. Really helps in what kind of issues to be watching out for.


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Old 06-16-2013, 03:56 PM   #51
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Re: mysterious knocking

I couldn't imagine them touching over time, that's crazy unless there is 1 thousands of an inch clearance. its usually they will touch or not and cranking the motor is enough to check for that, CAT motors are one of the motors with smallest clearance in diesel world and you have to install them perfect, usually have to install rotate change install rotate and sometimes have to tap with punch to get them right but once they don't touch and have even a piece of paper clearance we never have problems down the road after the build. so as long as I get it to have clearance during rotation then im good.

thanks for the idea him a call, good to have someone to talk to either way about it.

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Old 03-24-2014, 12:29 PM   #52
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Sorry to dig up thread.. But were you able to fix this just by taking off the oil pan, or did you have to take your motor apart
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Old 03-26-2014, 04:09 PM   #53
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Brian, everything needs to come apart. Pulling the pan only shows the contact.
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