JasonS
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I live two hours from my truck so, instead of actually working on my truck, about all I can do is accumulate parts or do research. I picked up a copy of the 1981 engine technical manual for the White D5000 which is the engine used in the 2-155 farm tractors (among other industrial applications). There were a number of interesting tidbits of information that I found really interesting:
1) The D5000 uses external oil lines to lubricate the rocker arms. There were a few prior posts on this topic and my assumption was this was done to improve lubrication. However, I am not sure that this was White's motivation. The oil passages on the White head and block surfaces are plugged with 1/4" cup plugs. If I were trying to improve lubrication, I'd add a secondary, external path and keep the existing through the block. I suspect that the external line modification was done instead to prevent oil seepage across the older head gaskets, not an attempt to improve lubrication.
2) The head gasket MUST be re-torqued after 2 hours of operation. This is for all styles of head gasket; including the "new" ones. There is mention of the new head gasket style and the improved sealing resulting from its use. I have one of the OEM white head gaskets and it is identical to the victor 5818 sold on SS as well as the major military suppliers. It also clearly indicates do NOT apply any sealant to the new style gaskets as the new gasket has a self-sealing surface.
3) White had problems with the head studs and went through a variety of replacements due to failures. It may be worthwhile to try something from ARP. The final head torque is listed as 147-150 ft-lbs and is "critical."
4) White recommends that the harmonic balancer be replaced regardless of visual condition EVERY time the crankshaft/ timing gears, cam, etc is serviced or crankshaft breakage can result. This pretty obvious but the strong indication in the manual may suggest that there were a number of field failures. The D5000 torque spec is 225-250 ft-lbs which is different from the 150 ft-lbs previously posted here on SS.
5) White began installing valve guide seals to reduce oil consumption. It also changed from chrome stems to shot-peened.
6) It was a surprise to me that White kept the same pressure/ scavenge oil pump system as the multifuel. I would have assumed a simpler, pressure-only system.
7) I couldn't find any mention of an oil check valve built into the block but the manual isn't terribly detailed.
1) The D5000 uses external oil lines to lubricate the rocker arms. There were a few prior posts on this topic and my assumption was this was done to improve lubrication. However, I am not sure that this was White's motivation. The oil passages on the White head and block surfaces are plugged with 1/4" cup plugs. If I were trying to improve lubrication, I'd add a secondary, external path and keep the existing through the block. I suspect that the external line modification was done instead to prevent oil seepage across the older head gaskets, not an attempt to improve lubrication.
2) The head gasket MUST be re-torqued after 2 hours of operation. This is for all styles of head gasket; including the "new" ones. There is mention of the new head gasket style and the improved sealing resulting from its use. I have one of the OEM white head gaskets and it is identical to the victor 5818 sold on SS as well as the major military suppliers. It also clearly indicates do NOT apply any sealant to the new style gaskets as the new gasket has a self-sealing surface.
3) White had problems with the head studs and went through a variety of replacements due to failures. It may be worthwhile to try something from ARP. The final head torque is listed as 147-150 ft-lbs and is "critical."
4) White recommends that the harmonic balancer be replaced regardless of visual condition EVERY time the crankshaft/ timing gears, cam, etc is serviced or crankshaft breakage can result. This pretty obvious but the strong indication in the manual may suggest that there were a number of field failures. The D5000 torque spec is 225-250 ft-lbs which is different from the 150 ft-lbs previously posted here on SS.
5) White began installing valve guide seals to reduce oil consumption. It also changed from chrome stems to shot-peened.
6) It was a surprise to me that White kept the same pressure/ scavenge oil pump system as the multifuel. I would have assumed a simpler, pressure-only system.
7) I couldn't find any mention of an oil check valve built into the block but the manual isn't terribly detailed.
