Kernopelli
Veteran Member
- Joined
- Oct 16, 2006
- Messages
- 2,207
- Location
- Carterville, Illinois
- Tractor
- Mitsubishi MTE2000D, Dig It 258 Mini Ex, Deere Z930A ZTR
Son has been using the tractor for a landscape job for local school district. Mitsubishi MTE2000D...nearly identical to a CIH 254/255, biggest difference is the CIH's used Mitsubishi's K3E and mine has the K3F engine. Tractor running fine, fluids fine, no unusual noises, started w/o using glow plugs despite cold temps. He loads the tractor on the trailer and intended to leave it idling/warm up while chaining it down but when he moved the throttle back to idle, he said he instantly knew he had moved the throttle too far and accidentally shut the tractor off.....done the same thing myself a million times. Throttle is how this model shuts off, no solenoid, switch, key position, etc required. Less than a minute later he hops back on it and tractor WILL NOT turn over. It has every indication of being locked up. The starter engages well and attempts to turn hard. I have tried to turn the crankshaft w/ ratchet and cheater bar after taking the glow plugs out and she won't budge. I've made certain there's no hydraulic pressure on the pump. Transmission appears fine and not a factor and clutch does disengage engine from trans when pushed in. I dropped the oil pan and can not see anything unusual. What I can see of cylinder walls looks good, cam and lobes looks good and can't tell anything unusual about crank. Rods and pistons don't show anything apparently wrong. Took the valve cover off and there doesn't appear to be any bent push rods, I can push the valve stems and they move freely so there doesn't appear to have been any piston/valve interference issues. The only reason I haven't taken the head off yet is I'm certain a new head gasket is going to be pricey and possibly not easy to get.....I wanted to get some input before progressing.
After seeing what I did ( nothing unusual) I decided to loosen the 4 crank main caps thinking if the main bearings were seized this would likely allow me to turn the engine over by hand...engine is still tight as a drum. Is my thinking right (If crank bearings were seized, would loosening the caps allow me to spin the crank by hand)?
What next? As mentioned, I'd like to try to put off taking the head off just yet. I can take the timing cover off and see if there are any gear issues. Take the hydraulic pump off to make sure it hasn't imploded some how. After that I expect it's head time and progressing on to a normal tear down? I really want to hit all possibilities before I yank this engine and start tearing it apart. Need some advice?
After seeing what I did ( nothing unusual) I decided to loosen the 4 crank main caps thinking if the main bearings were seized this would likely allow me to turn the engine over by hand...engine is still tight as a drum. Is my thinking right (If crank bearings were seized, would loosening the caps allow me to spin the crank by hand)?
What next? As mentioned, I'd like to try to put off taking the head off just yet. I can take the timing cover off and see if there are any gear issues. Take the hydraulic pump off to make sure it hasn't imploded some how. After that I expect it's head time and progressing on to a normal tear down? I really want to hit all possibilities before I yank this engine and start tearing it apart. Need some advice?