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My M1031 SECM also has the chassis date of 6-86 while the work bed is 6-89. In the glove compartment, there was a form from GM stating the warranty start was delayed for a year as the chassis was in storage at Flint MI. The issue as I remember from my active duty days was the governor...

The 700R4 has a lockup torque converter, reducing heat buildup in the fluid at highway speed. The GV overdrive will tend to increase the slip in the torque converter which only heats the transmission. I would go with a 4L80/85 transmission over the 700R4 in the K30s. The 700 should be fine...

Pure genius!! Better than the slide hammer since it is being pushed out.

The small red wire on the 2-pole plastic connector is the sense, not excite. On both, the excite is brown. There must be 24 volts to the #2 (right side) alternator, 12 volts to #1 (left) when the ignition is on. Why the need for the sense wire? The fat wire delivering the current has...

They were never intended to tow trailers, kind of a single trick pony. But it still is a K30 chassis, the same as a 1008.

The vacuum lines to the IP are only for the transmission since the TH400 relies on engine RPM and manifold vacuum from a typical gasoline engine to modulate the shifting. They have nothing to do with the engine operation. The sock in the tank normally keeps the fuel intake from unporting or...

Should be. Trombetta makes both.

Late injection timing will make it smoke as if there were "excess" fuel. If you had excess fuel, you would most likely to have a run-away diesel engine. Power and consequently speed in a diesel engine is controlled solely by injected quantity. In a gasoline engine, power and speed are...

That makes sense. Given the distance and mileage, it is possible the sock on the fuel line in the tank is aspirating air into the supply.

If the engine is at operating temperature and the air intake is not clogged, there shouldn't be any black smoke. The only other issue would be timing, either in the injection pump or in the drive from crank to cam. Diesel engines have variable mixture, running from very lean at low power to...

Just did another one with the KD Tool 2291 tool. Both pull AND install. One more time how to do this. Pulling is straight forward. Find the matching bolts, pull the large center bolt and remove the washer, reinstall the bolt flush with the pulley. Install the puller and crank away. Once...

How about using those vinyl repair kits? These have a thermoset material and dyes to match colors, you would need to fill to 1/16' or so below, then mix the repair putty to match color and apply. The cover with grain paper to match and use an iron to polymerize the thermoset vinyl. I would...

You don't remember the M37 before the restoration, do you? You might learn.

Will it work with engine in the vehicle? We have a 1009 with all glow plugs in need of swapping.

I would not want to ride in a lightweight , short wheelbase vehicle that has Dana 60 front, 14 bolt rear. The unsprung weight increase with heavier springs will rattle your brain. Handling will also suffer, unless you are just using it for rock crawling. Yes, you can get away with making a...

Have a look at the -20s Maintenance Allocation Chart. You will need the -34 to see the details of what needs to be removed and how many. For example, the MAC has 1 hour for injector lines, that is 8 hours for the set. Add in an hour for the intake and an hour for the injection pump for a good...

Yes, the impact wrench SAVED the evening. I could NOT believe how tight the crank pulley bolts were. Now you know how to replace the belts. And how it cannot be done without a 15mm socket AND extension. Get a good 3.8' set for the truck, it will get those power steering bracket bolts...

Ok, getting this thread back in order...after moving the compressor in my 1031 SECM last night, I didn't have time to test it. Well, this morning I fired it up. Runs like normal except the unloader valve is leaking during compressor operation, before it leaked after the compressor stopped so...

One obvious clue this is NOT a small OR big block diesel is the CLOSED VALLEY. On any Chevy V8, cam tappets can be removed and replaced by removing the intake manifold and using an extractor through the cylinder head. Not so on the Detroit Diesel V8. The cylinder heads must be removed...

Must be color distortion from fluorescent light on the 1008 in 383 green. Do you have any daylight pictures of it?