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I have a 2012 Cat D6N LGP 6.6 that dripped 4 valves. Does…

I have a 2012...

I have a 2012 Cat D6N LGP 6.6 that dripped 4 valves. Does this engine have sleeves? If so are they wet or dry sleeves?

Mechanic's Assistant: What is the complete model and serial number of your machine?

Engine info:

Mechanic's Assistant: Are you fixing this yourself? What have you tried so far?

C6.6 AR#(###) ###-####serial # C8N02871

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Answered in 16 minutes by:
4/5/2020
Mechanic: catmastertech, Technician replied 2 years ago
catmastertech
catmastertech, Technician
Category: Construction and Road Equipment
Satisfied Customers: 4,007
Experience: Field service technician for CAT 19 years.
Verified

Hello,

These engines do not use a sleeve and do not have a repair sleeve offered from CAT.

Cylinders can be bored 0.5 mm (0.02 inch) oversized for C4.4, C6.6, and C7.1 and 1.0 mm (0.040 in) for C7.1. The cylinder bore diameter of the stock head gasket is still acceptable to be used with the 0.5 mm (0.02 inch) oversized bore diameter. The standard head gasket can still be used as long as the top deck height is still within the NEW specifications.

When an oversize piston kit is installed, all the pistons must be oversized and installed as a complete set. Using only one or two oversize piston kits may result in an engine imbalance. If one piston bore needs to be machined oversize, all the remaining piston bores must also be machined oversize. The oversizing of the piston bore is a four-step process. The angle of the crosshatch is required to be 30°-35° off the horizontal axis of the bore.

catmastertech
catmastertech, Technician
Category: Construction and Road Equipment
Satisfied Customers: 4,007
Experience: Field service technician for CAT 19 years.
Verified
catmastertech and 87 other Construction and Road Equipment Specialists are ready to help you
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Customer reply replied 2 years ago
Would you suggest rebuilding it or find a replacement engine?
Mechanic: catmastertech, Technician replied 2 years ago

I would do a replacement due to the amount time required to disassemble the engine, have it bored out and then replace all the pistons, then rebuild it, would take so much time that none of my customers would be willing to wait that long. Most engines shops hear are always 1 to 2 weeks out to even start a new engine job.

catmastertech
catmastertech, Technician
Category: Construction and Road Equipment
Satisfied Customers: 4,007
Experience: Field service technician for CAT 19 years.
Verified
catmastertech and 87 other Construction and Road Equipment Specialists are ready to help you
Ask your own question now
Customer reply replied 2 years ago
I’ll do that thank you for your help
Mechanic: catmastertech, Technician replied 2 years ago

Glad I could help.

Thank you for using JustAnswer, if you do need further help please let me know.

If you are satisfied with my service, please take a moment to provide a rating.

Thanks again, Don

CATMASTERTECH

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Customer reply replied 2 years ago
I don’t need anymore assistance thank you
Mechanic: catmastertech, Technician replied 2 years ago

Ok, thanks.

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Category: Construction and Road Equipment
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