cleb

I picked up my M818 from Redstone earlier this week (Redstone M818 Recovery). I've been working on fixing her up this week. The first thing I did was a field repair to the radiator that was damaged by a forklift. Next was draining the nasty bit of fuel out, adding new, and replacing the fuel filter. I drained the oil (only a little came out, and the plug was loose). Looks like they drained it when they turned it in. I filled it up with Rotella, put 2 1000CA batteries from costco in, and she wouldn't turn over. I could hear the starter going thunk, and the battery voltage going way down, but she wasn't spinning. I put a socket and driver on the crank bolt and tried to spin it over with a short cheater bar (16"), but couldn't get it to go. I'm not sure how much force it should take. I read the TM, and popped off the rocker covers to remove the decompression plugs. Everything in the top end looked clean, no rust. I couldn't break the plugs with the ratchet and driver I had, I think I need a rattle gun.

Any ideas? I need to get the decompression plugs out and see if I can inspect the pistons through that hole. I also am going to pull the starter, and make sure its functioning normally. I've heard a bushing can fall off of the starter and cause the flywheel to jam. How much force/how big of a breaker bar should be required to get the engine to turn over by hand? I don't think my bar was long enough, I know its a big engine.

Thanks,

Caleb

__________________
Current:
1971 Jeep GPD M35A2 W/W
2006 Ford P71

Previously Owned:
1970 Kaiser XM818
1971 Jeep GPD M35A2
1984 M1009
1953 GMC M135
1952 GMC XM211 6215 W/W

doghead

I have been able to turn over 250's with the fan blade and some tension on the belts. Never needed a bar or wrench to see if they are stuck. Sounds like yours is stuck.

__________________
M818, M819, M35A2 w/w, M35A2, M109, M561 w/w, M274, M1008A1, M146, M105, M116A2, M101A2, Pioneer tool trailer, MEP-002, MEP-017A, 1990 Dodge Tug, 5ton winch shear pins


Proper Use of Capitalization and Punctuation

sandcobra164

Just helped on a recovery this week. That Cummins is hard to spin if it's sat for a while. It finally took 4 used batteries and about a 5 minute charge from a HMMWV to get that 817 to crank over. Previously, it just gave the loud thud that you're referring to. I've ran into this about 5 times in the last couple of weeks with all the 5 ton's that I've helped recover. 5 ton's take quite a bit of juice to start.

sandcobra164

And all the ones that gave the loud thud cranked up and drove out once properly motivated with battery power and slave vehicle power.

Victor

Caleb,
looks like you have stuck engine. I am usualy testing engines with 12" ratchet, just in case it jumps forward. Even with good compression engine will spin, slowly but moves under constant pulling force. If its not moving at all ... sorry for your loss.
My suggestion is:
drop oil pan; remove, review and put back bearings one-by-one. Also look at bearings. Make pictures.

drgreg

If you don't have enough juice, try to pull start it. I would do it just enough to see if the engine will break free.

__________________
1942 G-506, CHEVY 1.5 ton 4x4
1943 GASPORTER, Aviation Re-fueler
1963 M51, Diamond T, Gasser Dump
1969 M105A2, Trailer
1970 XM818
1971 M35A2, AM General
1971 M35A2, M109 K-Mart version
1972 M813A1, AM General 5 ton
1983 M923
1985 M1009, CUCV w/ keys
1986 M1008, CUCV
1986 M105A2, Carpenter
1997 PM96-133 Service
M101A2
M101A3
2007 M796, Bolster
2008 M796


Quote kennys@wi.rr.com
"No doc I wasn't cool enough to be in the AV club."

sandcobra164

I doubt the engine is locked, he just doesn't have enough battery to crank it. I'll bet 1 dollar on it!!!!!!!

wreckerman893

Man......I should have brought the slave cables and at least tried to turn her over.

My wrecker did the same thing....hot batteries and when I hit the switch...THUNK...tried to pull start...no soap....had to do an engine transplant.

Maybe you will get lucky.....mine had sat up a lot longer than yours.

Keep us posted.

derby

The loose oil plug could be more than it look's like. Ditto on the fan blade turning, done it on alot of engines. was there an air cleaner filter in it? if they drained it at turn in they would have drained most if not all fluids. I have seen them drain brakes,power steering, rad,engine,trans,transfer case, diffs remove air cleaner filter and drain the air tank (just kidding) I would try and tow start it, You won't cause any more damage that might already be done.

Victor

If you try to tow start it - put some oil (WD-40) in cylinders for day or two. Obviously engine oil in engine. Do not put in 1st or 2nd gear. try in 5th and if engine moves - put in 4th or 3rd to start it.