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tapping that comes and goes

ohnuts

Member
156
1
16
Location
indianapolis in
The front of my LDT465 engine has a tap that comes and goes. Sounds like a wrist pin in the compressor connecting rod. The compressor gets its oil from the motor block and doesnt need oil? One thread mentiond it might be bearing slap on the water pump.

question: how is the compressor oiled?

q: does the water pump have a weep hole for the bearing wear to show?

q: anybody want to sell a compressor?

q: is there a source for water pumps?

q: non of the threads looked like anybody ever found a rebuild manual for the compressors.
 

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Djfreema

In Memorial
In Memorial
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Location
Santa Clarita, Ca
Could it be when the governor kicks in for the air compressor that the noise happens? If so, mine does it too and I think its normal when there an actual load on the air compressor. Its oiled by the engine oil.
 

hole

Active member
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36
Location
Alta Loma , Ca.
Mine started to make an intermittant " rattle " noise, turned out to be the hood rattling because the hinges are worn. It was a bit unsettling until I figured that out.
 

Stretch44875

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Steel Soldiers Supporter
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Tiro, Ohio
You can hear the compressor working on my truck, and it is intermittent, depending on whether it's pumping or not. Sounds like a normal noise to me, but yours might be nosier.

Water pump has a weep hole.

Don't know if anyone has rebuilt the compressors, a truck shop would probably have the kit. There are 2 different compressor's installed, a twin cylinder, and a single cylinder.

Dennis
 

cranetruck

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Super Moderator
Steel Soldiers Supporter
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Meadows of Dan, Virginia
What's you oil pressure?

BTW, I do have a take-off compressor from an LDS465-1A engine that you can have for $45 plus shipping. It appears to be in good condition. It's a dual piston type and turns smoothly, some exterior dirt and rust and would be sold "as is". Shipping weight is 30 lb from 24120.
 

ohnuts

Member
156
1
16
Location
indianapolis in
Hello Back to everyone.

Guess this is why we need to kick each others tires and listen now and then. Not so worried now but these trucks are supposed to fail total when no air is avail. The chatter is so sudden and then stops complete. Think I'm going with the under load idea.
 
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