Jami L Carter
Member
Hello what is the best way to remove pre combustion chambers from a D315 cat engine thank you
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Pre combustion chambers
- Thread starter Jami L Carter
- Start date
Jami L Carter
Member
Thank you
Are the precups sealed by threads only.
Im waiting on my book for the D315
Are the precups sealed by threads only.
Im waiting on my book for the D315
Im not familiar with that particular engine. Most Ive seen in the past have an oring seal on the perimeter and a spacer on the threaded shaft. If you are going to reuse your precups, be sure to install the precup in the same hole, with the same spacer, as you removed it. If you replace them, the spacers come in different thicknesses so once the precup is torqued, it is clocked in the right position. If I am wrong on this engine, someone will surely say so.....LOL
John C.
Senior Member
As I recall there is a copper seal on the bottom with different thicknesses and an O ring on the top. The precup needs to have the hole for the glow plug end up somewhere close to the valve cover so the wire doesn't get burned on the exhaust manifold and it is easy to hook up. That's why there are different thicknesses of copper seals.
kshansen
Senior Member
- Joined
- Mar 11, 2012
- Messages
- 11,165
- Location
- Central New York, USA
- Occupation
- Retired Mechanic in Stone Quarry
With no S/N to go by it is not easy to answer 100% correct but I'm thinking that the D315 may have the old two piece pre-chambers such as these:
If so I believe you need the following tools or figure out how to do the job with something else. I believe where I worked we had those tools and may have used them once in 45 years, maybe on a D399 genset?
If so I believe you need the following tools or figure out how to do the job with something else. I believe where I worked we had those tools and may have used them once in 45 years, maybe on a D399 genset?
Jami L Carter
Member
Jami L Carter
Member
Ah my bad s/n 7U16081
John C.
Senior Member
Wow, I thought I was old! I've only seen the one piece pre cup.
I might very well be wrong on the material for the bottom seal. It might have been cast iron? Someone will correct us.
I might very well be wrong on the material for the bottom seal. It might have been cast iron? Someone will correct us.
All I remember are the steel ones (maybe cast).
Old Magnet
Senior Member
7U1-19,786 uses the 4F8517 non-glowplug chamber but the retainer and outer seal is a different outside diameter than shown in kshansen's post. Usually you can get by with just the 5F-8358 splined wrench (bolt) for removal which you can find on ebay. Bottom seal washer in copper is preferred but current Cat part is just coated steel.
kshansen
Senior Member
- Joined
- Mar 11, 2012
- Messages
- 11,165
- Location
- Central New York, USA
- Occupation
- Retired Mechanic in Stone Quarry
That's better now if SIS had information on that older equipment!
Might be good idea to do like Bluox suggests and check over on ACMOC..
As to what the bottom seals are made of, on the newer engines like the 3306 and D348 types, seems like there were either steel or iron. When was the last time someone referred to 3306 and D348 as "newer engines"!
Jami L Carter
Member
Good morning everyone
I have been working on my grandfather's D47u. It hadn't been ran for years. I installed a new oil pressure gauge/ temp gauge to see what condition the engine was in. I also replaced the radiator core.
Genereal radiator in Chicago made it for me. It was only 285.00. I changed the oil and filter and also the fuel filters. I believe i have a solid machine. Today i want to change the transmission oil. Im going to flush the case with fuel oil due to condensate build up in oil. My question is what oil should i put back in. We dont run the tractor in below freezing weather. I believe it requires 4 1/2 gallons. Just not sure of the type and weight of oil. Thank you
I have been working on my grandfather's D47u. It hadn't been ran for years. I installed a new oil pressure gauge/ temp gauge to see what condition the engine was in. I also replaced the radiator core.
Genereal radiator in Chicago made it for me. It was only 285.00. I changed the oil and filter and also the fuel filters. I believe i have a solid machine. Today i want to change the transmission oil. Im going to flush the case with fuel oil due to condensate build up in oil. My question is what oil should i put back in. We dont run the tractor in below freezing weather. I believe it requires 4 1/2 gallons. Just not sure of the type and weight of oil. Thank you
Old Magnet
Senior Member
All manual back then. Use SAE 90 gear oil.
Jami L Carter
Member
Thank you