I have a 410 DA with twin 3118...
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05-19-2020 04:43 PM
I have a 410 DA with twin 3118 cat diesels. I am not sure when the belts have been changed but I know it is quite a long time ago. I have asked my Marina to change them and today they told me it could take up to two days to change the belts They started by telling me they were draining the antifreeze and at that point I told them to stop. Can anyone tell me if this is anywhere near being close to what should be happening. When I look at it I cannot understand how it could take more than a couple hours per engine to change the belts. But also I am not a diesel mechanic.
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05-19-2020 06:12 PM
One way to approach this arena is to use the Factory Service Manual (FSM) for this engine.
The FSM details major and minor service operations, with details about required operations that must be performed in advance of the selected service.
According to this Cat document on page 69 the coolant service life (assuming it passes all the chemical tests) ranges from 3,000 hours / 2 years to 12,000 hours / 6 years, depending on the product and periodic required additives.
https://caterpillar.scene7.com/is/content/Caterpillar/CM20150224-59173-27200
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05-20-2020 04:01 AM
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05-20-2020 04:11 AM
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05-20-2020 04:24 AM
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05-20-2020 05:07 AM
My last response has two items connected by an AND.
"start w/ the FSM to see what is defined by the factory" and "it is likely that the antifreeze has exceeded the service life".
What is defined in the FSM for changing the belts? Does the FSM require draining the antifreeze to change the belts?
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05-20-2020 05:28 AM
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05-20-2020 05:35 AM
That is incorrect.
This link shows the 253 page Caterpillar Disassembly and Assembly for 3114, 3116 and 3126 Engines FSM.
https://www.barringtondieselclub.co.za/caterpillar/cat-3114-3116-3126-manuals.html
It sounds like the marina was ready to perform a normal full service on the engines, taking the listed two days, not just the requested belt replacement service.
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05-20-2020 05:54 AM
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05-21-2020 04:31 AM
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05-21-2020 07:44 AM
http://www.atlanticmobilemarine.com/3116_Maintenance.pdf
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05-21-2020 09:00 AM
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05-21-2020 09:14 AM
When I disassemble an engine block, or other parts, then have to scrape off internal crud because of operation past the useful life of oil or antifreeze, then the value of those specified intervals becomes clear.
On my boat I designed and installed this custom five-zone high-volume high-pressure oil change system that sucks out eight quarts of engine oil in ten seconds. It shoots out like a fire hose. This permits me to effectively maintain my engines in excess of the manufacturer's requirements.
https://live.staticflickr.com/4602/38697255400_870a0b6402_b.jpg
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05-21-2020 09:36 AM
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05-21-2020 09:44 AM
On mine, I discovered design deficiencies that I resolved over the ownership years, to maintain proper functionality and to prevent premature component failure.
It is good to develop skills plus maintain material and tool inventory to permit repair of unexpected failures, so that a broken belt will be an inconvenience, not a catastrophe.
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05-21-2020 09:51 AM
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05-21-2020 09:55 AM
If so, the antifreeze could be / should be emptied and reused, assuming it is still good.
Those items should probably be added to the carried tool arsenal.
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05-21-2020 10:06 AM
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05-21-2020 10:41 AM
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05-23-2020 11:11 PM
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05-24-2020 03:36 AM
Midnight run is correct the shroud covering the belt has about 8 screws in it that is the big part of the job then it’s loosening a tensioner and replacing the serpentine belt and applying tension back to the new belt to make it tight before tightening the screws
About an hour a side
Mechanic in car dealership for over 20 years I do my own work
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05-24-2020 03:49 AM
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05-24-2020 04:54 AM
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05-24-2020 05:20 AM
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05-24-2020 05:26 AM
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05-24-2020 06:31 AM
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05-24-2020 06:45 AM
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05-26-2020 01:53 PM
I'm enjoying all the reading because I too have the CAT 3116's in my 93 440DA. I've owned it for 2 yrs and this bit of maintenance has been on my mind. The belts look to be in decent shape. Just are a little loose. But honestly, I doubt if they've ever been touched in 1300 hrs! Like SeaMax says, it's very tight to work in there. Both guards are on mine. I'm wondering if you couldn't just leave that one bolt off and reinstall the guard if you'd want??? (unless it's the one that is tapped into the oil galley).
Anyway, it's best also if I can figure out how to drain the 8Gal of coolant next. So, now that I have everything else pretty much sorted out on the boat, I'll move these jobs to the top of the list! Thanks....Good stuff here!!!
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05-26-2020 05:09 PM
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05-27-2020 06:09 AM