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Cat 920 that has been sitting

Bluox

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Jun 19, 2010
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1,960
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WA state
Well, I got a good deal on a remanufactured CAT block with the correct casting number on it. It is on its way. I have my crankshaft at the machine shop getting cleaned up. I'm sure I will have many more questions coming soon, such as how to properly time everything from scratch. Thanks for the help.
Do yourself a favor and buy a service manual for your machine ,you will need it.
Bob
 

Joel59

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Mar 11, 2013
Messages
153
Location
NY
Thanks, Bob. I did buy a service manual and parts book. They will definitely come in handy. Sometimes guys on here, such as yourself, put things in more understandable terms. It also helps, at times, to hear tips, tricks and insight from folks with more experience on certain engine or machine.
 

Joel59

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Mar 11, 2013
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NY
When I'm installing the cam bearings, balancer shaft bearings, mains, and rod bearings should I use a particular assembly lube or just 15w-40 engine oil?
 

kshansen

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Retired Mechanic in Stone Quarry
Joel59,
Just as a favor to anyone trying to help include your S/N either in the message asking a question or I believe there is a way you can put it in so it shows under avatar over to the left of the message box. You may have posted it before but some people maybe replying to several different posts and little things like that can help alot.

Good luck and if you need any clarification on something I will try my best to translate from Caterpillar to English, or what we here in NY call English! Nige and a few of the guys from Australia might disagree that we have a common language!
 

kshansen

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When I'm installing the cam bearings, balancer shaft bearings, mains, and rod bearings should I use a particular assembly lube or just 15w-40 engine oil?

If you know you are going to be finishing the job fairly soon motor oil would be fine for me. But if there is a chance this will be an extended project in spare time I might be tempted to buy some assembly lube from an auto supply shop.

One example:
https://www.autozone.com/miscellane.../lucas-oil-4-oz-assembly-lubricant/692400_0_0

Another one that we did use a lot:
https://www.oreillyauto.com/detail/...iplate-motor-assembly-grease/l0034094/4419698
 

cdm123

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Nov 12, 2009
Messages
272
Location
manitoba canada
When I'm installing the cam bearings, balancer shaft bearings, mains, and rod bearings should I use a particular assembly lube or just 15w-40 engine oil?
I used to use a lithium grease called lubra plate, it doesn't run out if you don't fire up sight away, but mixes with oil.
 

Joel59

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Joined
Mar 11, 2013
Messages
153
Location
NY
Hi guys. I'm just wondering if I've already messed up, and am going to have to retime this engine from scratch. The crankshaft has been removed and one of the balancer shafts was broken off when the rod went through the block. Left assembled are the injection pump drive gear, injection pump idler gear, and camshaft. Should I just grind a mark on those where they are now, or is everything goofed up now with the removal of the crankshaft, oil pump, oil pump idler, and broken balancer shaft. Thanks.
 

kshansen

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Not 100% sure of the question. There should be timing marks on all the gears that need to be timed, like the cam gears and the balancer gears.

Not sure on the fuel pump timing. Tried to check what is used but would need to know the S/N of the engine to be sure which injection pump system you have. Not sure if it is timed with a pin in the pump or if it uses the tool that locks the drive gear in time. Just to be safe give the S/N of the engine the fuel system you are using is from, I would assume this is the original loader engine fuel system.
 

Joel59

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Mar 11, 2013
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NY
Thanks, Kshansen. The engine serial number is 78P41378 arrangement# 7N1515. It is original to the 62K9517 loader.
 

Joel59

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Mar 11, 2013
Messages
153
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NY
Also, I realize my question was not that clear, and I apologize. I guess I'm just having nightmares about timing this engine once I get it all put back together due to reading all kinds of posts about timing issues. I am worried because I couldn't nicely line up any marks before disassembly due to having a badly bent up and broken rod through the block and broken balancer shaft. I have my reman block and am getting ready to pull out my old cam and injector pump and gears.
 

Delmer

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Jan 3, 2013
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WI
You time it when you put the timing gears back on. You can do whatever you want to it at that point. There should be no problem at all if you can find the timing marks, they're correct, and you have the correct procedure.

People get into trouble when they pull an injection pump or something else and don't have the timing gears visible. You're starting from a blank slate, much easier to verify everything is right.
 

bam1968

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Nov 1, 2014
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IA
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Excavating Contractor
FWIW I would take a paint pen and mark the timing marks on the balancing shafts. They can be hard to see when you are laying underneath there trying to get the oil pump bolted up while lining up the timing marks on the shafts. Since you are basically starting from scratch your situation may be different. In my case, we had a guy overhaul the engine but didn't time the balancing shafts so I had to pull the pan and time them. I just remember having a hard time finding the timing marks. Just my $.02
 

kshansen

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Retired Mechanic in Stone Quarry
As others have replied above timing should not be a problem when you get to reassembling things. If you don't have that information I will try to provide it if no one beats me to it!

As for the injection pump timing check on your original engine fuel pump and governor the cover that the throttle control arm shaft stick out of there "should" be a bolt in the position shown in the picture below. I colored the head of it red and circled the #1. If you see that bolt on yours remove it and if I'm right it will actually be a couple inch long dowel like end on it. Don't worry nothing will fly out! That is actually a tool you use to time the pump to the engine. Let me know one way or another there might be an easy work around if your engine does not have that tool.

timing pin.png work aroun
 

Legdoc

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Oct 6, 2007
Messages
469
Location
south texas
Wow that 920 Is a blast from the past when Cat was a different company and I worked at the dealership.
Dumb simple and no plastic! I kind of miss it! A previous life. 910,920,930,950,966,D7G all the real deal. Well if memory serves correct the 910 was a Mitsubishi. 40 years ago. Where did the time go? Things were different.
 

d9gdon

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Feb 12, 2010
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Location
central texas
Ol' tctractors could put a few verbs together to describe the timing procedure.

It's really easy to time them with a service manual in front of you.

I think I could still do it without one, but I couldn't tell you all the steps without being there to look at it since it's been over 10 years since I did the last one.

I use Lubri Plate as well.
 
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Joel59

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Mar 11, 2013
Messages
153
Location
NY
Thanks for easing my mind guys. This is going to be my first diesel rebuild. Kshansen, yes, I do have that bolt. I haven't removed it yet, but it is there. I, too, miss tctractors. Everytime I look at my old block with the hole in it I can hear him say "that is really Knackered" lol!
 
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