Oil & Fuel Jinma 254 Blowby Compression Testing

   / Jinma 254 Blowby Compression Testing
  • Thread Starter
#31  
Hello All,

I thought you all might enjoy an update and some pictures in this saga. I began to split the tractor. Here is the process I've made so far:

I used Benye Tractor with Yangdong Diesel Engine | CHINESE TRACTOR OWNERS CLUB FORUM as a very nice guide.
1. Drain radiation fluid. Remove radiator
2. Disconnect headlights
3. Remove battery
4. Remove bucket from loader
5. Disconnect gauges and switches from body
6. Remove steering wheel (just the wheel)
7. Remove body
8. Drain diesel
9. Remove Diesel Tank
10. Remove arms of loader (used engine hoist)
11. Remove Right Side Arm Mount (first front cross member, then J-slotted piece, then stering mount) it came off easy. This exposes some of the hidden bellhousing bolts needed to split the tractors.
12. Remove Left arm mount (first j-slotted piece, then steering hydraulic piston) came off a bit harder. This exposes some of the hidden bellhousing bolts needed to split the tractors.
13. Removed 4WD front wheels drive shaft. First remove weldment clamps, collapse weldment. Remove the rear side first by pulling back on the coupler/spring then the front just comes right out. Mine had 6 ball bearings on the front and 5 on the back. Either I lost 1 or was it was missing a ball bearing to begin with. I’ll want to order some new dust boots when I am ready to re-assemble. This came off easy.
14. Remove electrical connections from front side of tractor and label all connections. (Alternator, starter, what I think is the voltage regulator, glow plug connections, temp sensor, oil sensor)
15. Remove low pressure hydraulic connection
16. Remove fill linkage, fuel linkage and de-compression linkage
17. Chock all wheels, jack up both front and back just a little bit, insert backup/safety jacks stands, hang engine from engine hoise
18. Unbolt bell housing. I noticed I had one missing bolt and the two bottom bolts were studs with double nuts. The bolts on the bell housing all came out with what looks like some thread sealant on them. I'm currently trying to shake the front and back halves apart. It's coming slowly but had to shut down at this point.

I'm labeling things as much as I remember to...and hopefully that will help during re-assembly. Where possible I'm replacing screws, bolts, nuts, washers, etc so that I don't have to scratch my head as to where they go on re-assembly.

So far so good and not too bad...going easier then I thought it would but I'm not done yet!

Reelnative,
I hope the head rebuild fixes your problem! Thanks for the link to the circleG site.

Here are some pictures:
https://plus.google.com/u/0/photos/100300971617064582658/albums/5906811590923544433
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   / Jinma 254 Blowby Compression Testing #32  
Wow!

Thanks for posting this detailed info, I really hope I don't have to go through it someday but if it happens I'll sure be following your post and directions you've laid out!
 
   / Jinma 254 Blowby Compression Testing #33  
Wow!

Thanks for posting this detailed info, I really hope I don't have to go through it someday but if it happens I'll sure be following your post and directions you've laid out!
 
   / Jinma 254 Blowby Compression Testing #34  
hahaha i wish the head was it, you know it can never be that easy, I ended up having to get 3 new pistons and rings one sleeve,head gasket new rod bearings, and rod bolts and a new goose neck and water inlet, and the head shaved down, all on an eng with 69hrs, i just got her back together tonight and will finnish it up tomorrow and fire her off, good luck with yours
 
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