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Old 08-23-2019, 09:31 AM   #1
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Join Date: Aug 2019
Location: Ohio
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Year: 2002
Coachwork: Thomas
Chassis: Freightliner FS-65
Engine: 7.2L Cat 3126 turbo diesel
Rated Cap: 71 passenger 30,000 gvwr
Waking up a 3126...

Hi folks!
I'm a competent (acft) mechanic but new to big diesels --
It's a 7.2l turbo 240hp in a 2002 thomas fs65 chassis (freightliner)

Couple questions: best place to get a service manual (free online links would be awesome!)

The engine hasn't been started in 2 to 3 years... It ran & drove fine prior to that (really!)
Is there an engine pre-oil procedure I should follow before trying to start the engine?

I've got a mechanical clutch fan -- is that standard? I'm surprised it wasn't electric -- the throttle is "fly by wire" not direct.

Once I determine the engines functional -- are their any parts I should replace right away as pre-maintenance failure?

This is on a tight budget -- I assume everyone here kinda is... -- but road-side failure is waste of time and money too...

Thanx for any leads in the right direction to start my new learning/wrenching adventure!
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Old 08-23-2019, 10:16 AM   #2
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Old 08-23-2019, 10:31 AM   #3
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https://bus-manuals.jimdofree.com/thomas/
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Old 08-23-2019, 10:36 AM   #4
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Join Date: Aug 2019
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Chassis: Freightliner FS-65
Engine: 7.2L Cat 3126 turbo diesel
Rated Cap: 71 passenger 30,000 gvwr
Thanks guyz!
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Old 08-29-2019, 09:14 AM   #5
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Join Date: Aug 2019
Location: Ohio
Posts: 49
Year: 2002
Coachwork: Thomas
Chassis: Freightliner FS-65
Engine: 7.2L Cat 3126 turbo diesel
Rated Cap: 71 passenger 30,000 gvwr
The good news is the engine will turn over with out any squealing sounds from anything -- but I need some bigger better batteries...

Fuel smells like varnish... Does diesel that smells like varnish still compress/ignite?

Should I immediately buy new filters? I was hoping to confirm this thing can actually run before investing any money into it...

Do I dare open the drain plug on the bottom of the fuel tank -- the tank is ½ full...

I completely drained the fuel/water separator (now I know better ) After 100 strokes on the manual prime pump on the secondary fuel filter I've still got no fuel in the separator bowl. Should I start to see it fill up or am I asking to much of the manual primer pump?

If I open either of the bolts on the filter/pump housing I can pump fuel out of the secondary filter.

Should I open the separator up and fill it with fresh fuel and see if I can pull the fresh fuel from there to the secondary pump?

Despite knowing how to fix a helicopter I find myself wanting a "how to fix this truck written for the average 5 year old..."

Because this engine doesn't have glow plugs...
It's got an air intake heater plate -- all the warnings say "don't use ether! May cause serious injury or death!!!" Is This For Real ?
How does this heater plate actually work? Are there exposed elements like inside a toaster turning red hot or what?

Thanks!
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Old 08-29-2019, 10:47 AM   #6
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yeah dont ether it if it has an intake heater!!!



get out the old fuel!!! 2 years plus is a LONG time for diesel to sit in moist Ohio..
and yeah that kitty wants to spin to start... we can try to jump it up with one of my busses but best thing is a couple new batteries.. I have batteries-plus AGM deep cycle in mine so i dont hurt them if a bus sits and the batteries die..



chances are after that long of time the HPOP probably drained so it weill take a bit of crank and wait, crank and wait till it fires...



a 240 HP FS-65?? dayum.. ive never seen a 240 in an FS. I guess thatsd why they put a stick in it.. no auto wants to take that power!
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Old 08-29-2019, 11:30 AM   #7
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Quote:
Originally Posted by cadillackid View Post
yeah dont ether it if it has an intake heater!!!



get out the old fuel!!! 2 years plus is a LONG time for diesel to sit in moist Ohio..
and yeah that kitty wants to spin to start... we can try to jump it up with one of my busses but best thing is a couple new batteries.. I have batteries-plus AGM deep cycle in mine so i dont hurt them if a bus sits and the batteries die..



chances are after that long of time the HPOP probably drained so it weill take a bit of crank and wait, crank and wait till it fires...



a 240 HP FS-65?? dayum.. ive never seen a 240 in an FS. I guess thatsd why they put a stick in it.. no auto wants to take that power!
I was mislead about the 240hp. That's a general info sticker on the valve cover. The serial # ID plate for my engine says it's 207hp which is still respectable...

It's got a 2000 series allison -- 5sp automatic.
Should be a nice driving truck once I get it going...
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Old 08-29-2019, 11:34 AM   #8
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Quote:
Originally Posted by cadillackid View Post
yeah dont ether it if it has an intake heater!!!



get out the old fuel!!! 2 years plus is a LONG time for diesel to sit in moist Ohio..
and yeah that kitty wants to spin to start... we can try to jump it up with one of my busses but best thing is a couple new batteries.. I have batteries-plus AGM deep cycle in mine so i dont hurt them if a bus sits and the batteries die..



chances are after that long of time the HPOP probably drained so it weill take a bit of crank and wait, crank and wait till it fires...



a 240 HP FS-65?? dayum.. ive never seen a 240 in an FS. I guess thatsd why they put a stick in it.. no auto wants to take that power!
Allison 2000 is rated up to 300hp and the 3060 Is somewhat higher. Did they not offer those on the FS-65
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Old 08-29-2019, 11:40 AM   #9
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I agree on ridding your bus of that old fuel. 1/2 a tank full is not easy to collect but drain it, filter it again and treat it then add back into fuel system once you are running. This would eliminate future problems in the fuel lines and filters because all that old fuel should rush out and carry debris with it.


Yes to not using ETHER comment. They do get red hot those elements, way thicker than toaster elements, more like an electric kettle has or oven. Lots of amps.



Helicopter mechanics can do diesel buses,


John
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Old 08-29-2019, 04:53 PM   #10
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Diesel doesn't go bad sitting for quite a while, unless you got water and algae (or whatever that gunk is) in the tank.

If you're going to let fuel sit a while add a biocide to the fuel tank when you fill up.
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