Single Scored Liner - MBN Cat
Discussion in 'Trucks [ Eighteen Wheelers ]' started by underpsi, Jun 28, 2013.
Page 2 of 4
-
-
Trucking Jobs in 30 seconds
Every month 400 people find a job with the help of TruckersReport.
-
-
-
-
That just sux, my 2 cents I only use ome piston cooling nozzles because I've had bad luck with non genuine ones. But your issue looks like over fuelling / over heating in that bore. Hope you get it fixed.
-
To me the 2 piston cooling nozzles are not the same. To check, I would find something flat, not diamond plate, C-clamp them both down side by side and use a carpenters square or something similar to compare the angles. The top picture in your set shows some blueing close to the oil drain back hole under the oil scraper ring. The second pic shows some sign of blueing but not as bad. The second sprayer on the cooling nozzle is designed to spray oil in the egg shaped hole on the bottom of the piston in pic #2. It doesn't look like it was getting oil in that hole from the discoloration.
Also who put the engine together? Did they check the ring end gap clearance or the side gap clearance before installing the pistons in the liners? You might have had to tight rings, that will also cause cylinder scoring with low miles like you had. -
-
15 over said: ↑You for sure have an over heating problem on that cylinder. I would have that injector checked to see if it was in fact over fueling. If it is I would raise cain with the supplier to warranty not only the injector but also the parts that it made fail.
To me the 2 piston cooling nozzles are not the same. To check, I would find something flat, not diamond plate, C-clamp them both down side by side and use a carpenters square or something similar to compare the angles. The top picture in your set shows some blueing close to the oil drain back hole under the oil scraper ring. The second pic shows some sign of blueing but not as bad. The second sprayer on the cooling nozzle is designed to spray oil in the egg shaped hole on the bottom of the piston in pic #2. It doesn't look like it was getting oil in that hole from the discoloration.
Also who put the engine together? Did they check the ring end gap clearance or the side gap clearance before installing the pistons in the liners? You might have had to tight rings, that will also cause cylinder scoring with low miles like you had.Click to expand... -
Feeler gauge for ring end gap and ring to groove clearance.
-
Outside of the liner looks good
Inside, not so much. Hard to see in the pic but theres little heat cracks in it like you'd see in a drum.
There is traces of oil in the oval shape of the piston
I also inspected the injector in good light today but theres no evidence of anything wrong with it from the outside. Obviously it could have an internal problem so I'll have to get them tested.
Trucking Jobs in 30 seconds
Every month 400 people find a job with the help of TruckersReport.
Page 2 of 4
Related Categories
-
Is it the compressor?
MemphisOrion posted Jul 14, 2025 at 2:13 PM -
Cascadia wet drain not opening
semitosemi posted Jul 14, 2025 at 12:56 AM -
Shore power
Mr Uturn posted Jul 13, 2025 at 3:38 PM -
A/C-Heater Module
LeviTrucker posted Jul 13, 2025 at 11:49 AM -
18 speed splitter knob
truckerbangin posted Jul 12, 2025 at 10:19 PM -
2012 International 7400 low...
mattyt1984 posted Jul 12, 2025 at 10:05 PM -
2012 Freightliner M2
truckerbangin posted Jul 12, 2025 at 7:52 PM -
Part number
drewfarmsllc posted Jul 12, 2025 at 1:04 PM -
Cummins isx 15 coolant loss no...
RoadRanger^^ posted Jul 12, 2025 at 11:15 AM -
Turbo actuator fault after...
Kosta posted Jul 11, 2025 at 3:19 PM
Loading...
Recent Threads
-
ITS HERE!!!!!
UnderdogVigilante posted Jul 14, 2025 at 7:21 PM -
No consumable products in reefer?
gekko1323 posted Jul 14, 2025 at 7:02 PM -
I need to know
Boxtruck1212 posted Jul 14, 2025 at 6:40 PM -
hauling for UPS, Fed Ex, and...
GAShog19 posted Jul 14, 2025 at 2:37 PM -
Is it the compressor?
MemphisOrion posted Jul 14, 2025 at 2:13 PM -
Best company for training?
LimpyLegs posted Jul 14, 2025 at 12:58 PM -
In your opinion, what should be...
DAX_ posted Jul 14, 2025 at 12:57 PM -
Cascadia wet drain not opening
semitosemi posted Jul 14, 2025 at 12:56 AM -
cntl
4noReason posted Jul 14, 2025 at 12:18 AM -
10 Of The Best Foods To Eat...
Chinatown posted Jul 13, 2025 at 11:17 PM
Loading...