So I changed my big end bearings last weekend and need some advice.
I Replaced the original OEM bearings (marked with "4", BEB Pictures Here) with standard size taiho. The old bearings looked ok and all of the rod journals looked good. I plastigauged only cylinder #4 and it was right in the middle of the range at .0015”. Cleaned the caps and journals with brake cleaner. Reinstalled each of the new bearings with engine assembly lube ( Permatex ultraslick ). Torqued new oem bolts to 27 ft-lb, then additional 90 degrees. Put it all back together (w/ new oil pickup gasket and fpig on the pan. Filled with new Delo 15w40 and new oil filter. Cranked it over by hand many rotations. Re-installed glow plugs and injector relief line (had them off for ease of hand turning the engine). Cranked it with the fuel cutoff switch unplugged several times until oil pressure came up. Started it up and everything sounded good the first few days.
A couple of days later after the truck was warm and i parked back at home, i noticed a ticking sound when parked in neutral. It seems to only be noticeable in the 850-1050 rpm range as when i bring the rpm up using the hand throttle or put it in gear dropping the rpm's, it is not noticeable. I have read all the threads about 1hdt tick and probably would not be concerned had it not started right after a BEB change.
Below is a link to my google drive sound clip of the tick noise:
It sounds loudest from when listening from the fenderwell or underneath the truck. I want to say from the bottom end/ bellhousing area but the location is not evident when probing even with a mechanics stethiscope.
For the others with a 1hdt tick, does this sound the same or am i hearing something worse?
Any suggestions on troubleshooting or path forward?
I was going to start by pulling the drain plug and checking for any metal. Oil analysis maybe?
Or do i need to just pull the pan again and inspect/plastigauge all of the bearings?
I have a 3yo and 2 month old, that combined with no place to do this type of job would make this a real hassle.. I park on the street and had used my neighbors drive way while he was out of town to setup shop and get it done the first time. But if it has to be done...
Any advice would be useful. I really hope that i didn't mess up a perfectly good working 1HDT.
A few other tidbits that might be important
-When cranking over by hand, i felt like heard a very light "ting" periodically, but wasn't sure if it was the ratchet or something else. It otherwise moved freely as expected.
-Before dropping the pan, i flushed the engine with Liquimoly engine flush (poured 1 liter into the oil fill, then ran at idle for 10 minutes)
-This is my second oil change since owning the truck and i haven't noticed anything like this in the 3500 miles that i have driven it so far. It did great on the 2500 mile cross country trip out here from GA to CA.
-I also performed a compression test before draining oil since it was warm and i had to remove the glow plugs anyway (all 515-520 psi).
-I unbolted the injector return line rail (in order to remove glow plugs, but i have done this before without trouble).
-Also did drain and refill of the A442f transmission (the tranny fluid color was not great as it was only my second drain/refill and the PO had let it get funky).
-I think that i have over filled the transmission (filled past the warm line when cold). I need to get park it on level ground and check it warm and cold
Below are pictures of the old bearings (Cylinder 1-6 is top-bottom, Cap side on left, Rod side on right)
I Replaced the original OEM bearings (marked with "4", BEB Pictures Here) with standard size taiho. The old bearings looked ok and all of the rod journals looked good. I plastigauged only cylinder #4 and it was right in the middle of the range at .0015”. Cleaned the caps and journals with brake cleaner. Reinstalled each of the new bearings with engine assembly lube ( Permatex ultraslick ). Torqued new oem bolts to 27 ft-lb, then additional 90 degrees. Put it all back together (w/ new oil pickup gasket and fpig on the pan. Filled with new Delo 15w40 and new oil filter. Cranked it over by hand many rotations. Re-installed glow plugs and injector relief line (had them off for ease of hand turning the engine). Cranked it with the fuel cutoff switch unplugged several times until oil pressure came up. Started it up and everything sounded good the first few days.
A couple of days later after the truck was warm and i parked back at home, i noticed a ticking sound when parked in neutral. It seems to only be noticeable in the 850-1050 rpm range as when i bring the rpm up using the hand throttle or put it in gear dropping the rpm's, it is not noticeable. I have read all the threads about 1hdt tick and probably would not be concerned had it not started right after a BEB change.
Below is a link to my google drive sound clip of the tick noise:
It sounds loudest from when listening from the fenderwell or underneath the truck. I want to say from the bottom end/ bellhousing area but the location is not evident when probing even with a mechanics stethiscope.
For the others with a 1hdt tick, does this sound the same or am i hearing something worse?
Any suggestions on troubleshooting or path forward?
I was going to start by pulling the drain plug and checking for any metal. Oil analysis maybe?
Or do i need to just pull the pan again and inspect/plastigauge all of the bearings?
I have a 3yo and 2 month old, that combined with no place to do this type of job would make this a real hassle.. I park on the street and had used my neighbors drive way while he was out of town to setup shop and get it done the first time. But if it has to be done...
Any advice would be useful. I really hope that i didn't mess up a perfectly good working 1HDT.
A few other tidbits that might be important
-When cranking over by hand, i felt like heard a very light "ting" periodically, but wasn't sure if it was the ratchet or something else. It otherwise moved freely as expected.
-Before dropping the pan, i flushed the engine with Liquimoly engine flush (poured 1 liter into the oil fill, then ran at idle for 10 minutes)
-This is my second oil change since owning the truck and i haven't noticed anything like this in the 3500 miles that i have driven it so far. It did great on the 2500 mile cross country trip out here from GA to CA.
-I also performed a compression test before draining oil since it was warm and i had to remove the glow plugs anyway (all 515-520 psi).
-I unbolted the injector return line rail (in order to remove glow plugs, but i have done this before without trouble).
-Also did drain and refill of the A442f transmission (the tranny fluid color was not great as it was only my second drain/refill and the PO had let it get funky).
-I think that i have over filled the transmission (filled past the warm line when cold). I need to get park it on level ground and check it warm and cold
Below are pictures of the old bearings (Cylinder 1-6 is top-bottom, Cap side on left, Rod side on right)