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To close out this thread: I bought a new head gasket from Kumar Bros, and it seemed like a better gasket. For one thing it had a silicone sealing ring all around. I added a blue oring around the oil supply in the block, which I neglected the first time. I tightened it up in stages over a...

Bought a spring scale and pulled the torque wrench to 35 pounds on the beam; the scale read 30 pounds. More testing might be necessary but the initial results confirm my suspicion that the head wasn’t tight enough. 15% off.

Wasn***8217;t checked beforehand but I promise I will check it next chance I can.

The simplest answer is usually the right answer, and that***8217;s just that the compression is too low at startup. I***8217;m going on the assumption that I didn***8217;t tighten up the head enough. It runs very nicely after about ten minutes, and burns cleanly, so I***8217;m encouraged that...

Thanks wolf man: Glow plugs were bench tested>. Aluminum wires between plugs were filed clean. Voltage at glow plug was 8.7volts, in spec. Starter spins well. Tractor smokes black when first cranking. Fuel was the same as prior to tear down but is summer blend. Added a quart of kerosene...

Currently the head is off but I will check compression if needed later. Re head bolts. My experience is with MBZ w201s.. I followed my procedure here, which is to chase the bolt holes with a tap, fill the holes with wd40, and then vacuum out the holes. I put oil on the head bolts. Kubota...

The head was removed because one cylinder was starting later than the others. There was little oil consumption nor was the coolant compromised. I thought I might see a broken ring or a bad piston. Upon disassembly the pistons showed no sign of slap or excessive carbon buildup. The connecting...

In my defense the oring is shown on the crankcase fiche and not on the cylinder fiche, so I missed it there. The old head gasket is gone to the trash so I cant say if I just never saw it or it was missing... there was quite a sludge on that side of the block. Ive owned this tractor for ten...

Piston #3 had oily soot All around its metal ring. I***8217;ve already cleaned it up or I***8217;d post a photo. Oil reaches the head through a pin near #3. There is a crush washer affixed to the gasket that I think keeps the oil where it belongs, but I had a seep along the block on that...

Like the old guy said: If you aren***8217;t going to listen to me, why did you ask? I removed the head and the head gasket did not seem to have sealed very well: I***8217;ll buy a new one! The torque for this head is so low (35 ft lbs). I don***8217;t see how it ever seals. My Mercedes...

Thanks! I will try to reuse knowing that I might have to replace. I would never try this on a diesel car, but the head is easy to get at here. Why are studs used in two places on this head?

Rebuilt my b7100 with new con bearings, rings and valve reseating. First start showed low compression and extending cranking to start. Oil burning until thoroughly warmed up. Gets better the more I break it in, But still needs a long crank. Runs good otherwise. Today after 4 hours of...

I've never been satisfied with the valves on my b7100. It drops rather than releases slowly, and not at all when not running. It's an eaton mono block. Will this valve on eBay work as a front end loader valve...

So will too few cause my problem?

I rebuild my steering after a bearing seized. The recirculating balls were all found in the steering box, so I bought new ones. I put in 48 or so and reassembled. Now the tractor seems to have a lost a lot of its turning circle. Did I put in too many of the little bearings? What is the...

I have a mid mount mower on my b5100. This is the front mount pto, rear 3pt hitch lift and 50" mower. It isnt the right setup for my mowing so I think I might consider selling off the whole setup. What would be a fair price for the whole thing? The deck is solid and the pto clutch is new...