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The green wire, yes. It comes from the thermal switch, to the injection pump and then to the high idle speed solenoid. To check the cold timing advance, disconnect at the pump so you only apply 12 volts to the cold timing advance.

Injection timing? The DB2 injection pump first pressurizes the fuel to transfer pressure, 20 to 100 psi. Part of this flow is used to advance timing through a dash pot on the bottom of the pump. Since transfer pressure is a function of engine speed, a mechanical override is linked to the...

Another timing trick good for a few degrees is to supply 12 volts to the case pressure solenoid. This is done for cold start, applying voltage lowers the case pressure which advances timing.. If this doesn't produce any noticeable sound change, the injection pump could be defective in the...

The injected quantity is based on skinny pedal position, not engine speed. IQ is only limited at maximum engine speed. If you are doing 73 MPH in a stock 1 ton CUCV, the engine is at 3600 RPM and the governor in the injection pump is starting to reduce injected quantity to limit RPM. Likewise...

This is a 1028 with the maintenance body on the back? That would be the old Dodge contact maintenance vehicles. It had a Hobart welder driven by a Wisconsin engine. Retrofit to the M1031 style PTO driven unit is a lot of work plus a good bit of oddball parts. Put a Thunderbolt Miller in it...

The key is volumetric efficiency. Forced induction improves mass flow but the volumetric efficiency stays approximately the same, that is between 1800 and 2200 RPM. When the engine is operated outside of the peak efficiency, there is more waste heat. Higher speeds mean more waste heat to the...

Timing chain wear manifests as a slap. Since the chain cover is aluminium, you will find aluminium flakes if you analyze old oil filter. Done commonly on aircraft service. Use a pipe cutter to not generate more chips.

Thanks, synthesis of multiple posts can be an issue, I just want this relic to be informative, if not recursive.

From my research, offset is used when the magnetic pickup tool cannot be aligned to the fixed pointer. I did find the IP base timing calibration in the -34 last night. Performed with IP off engine using compressed air to force plungers into the cam ring through the #1 outlet port with input...

I said the original alternators are the same. Same GM part number, same national stock number.

Ordered a VDO 333 969 tach. Pricey but I got my uncle Jeff's discount. An employee perk, along with being able to handle the item before I buy. A 2.0625 inch diameter 4k max tach which neatly runs off any alternator W signal from 400 to 1300 Hz. The port side alternator on a CUCV already has...

To further this topic, diesels nearly always run lean. Far lean, at idle, this engine injects 6 to 10 milligrams of diesel each combustion stroke. 379 cubic inches of air gets under 50 milligrams of diesel. That is 7000 milligrams of air, basically a 140:1 air to fuel ratio. Full throttle...

Passenger alt charges the rear battery. Driver alt charges front. Measure at the batteries, not frame ground. The back battery negative is the same as the front battery positive. The passenger alternator needs an isolated negative, this is connected to the positive terminal on the front...

The skinny pedal. Throttle in a diesel controls only fuel. The injection pump is calibrated to provide only as much fuel as possible, the limiting factor is exhaust gas temperature. More air with a turbo means that limit is higher. More can be injected with a turbo so there is an...

Diesels have little to no valve overlap. There is little clearance between the piston and the head at TDC. Valves are just 10 to 15 thousandths below the planed gasket surface. Mufflers work by providing an expansion volume, then a slight restriction or a flow path variation. Some have...

Find a deserted road with a good grade. Be very careful when doing this test as if the engine quits, yes u have no power steering and only two brake pedal applications. Called Arkansas overdrive, it is illegal in most states. If the noise decreases, it is gear noise.

All dynamics are set during calibration. Even the timing mark can be reset, using the proper tooling and measurements. So when you install a turbo and tighten the leaf spring screw, it slightly advances the max fuel timing as the plungers, shoes and rollers now contact the cam lobes sooner...

To the minute too..

Page 2-57 of the -10 TM specifies maximum trailer weight of 3100 pounds and tongue weight of 300 pounds with an M101 trailer. This trailer is the A1 variant with hydraulic surge brakes. As long as the hitch is the stock pintle hook type, the TUV inspector must approve as the TM was written...

NSN is the 13 digit number beginning with 2320.. The 1GC number is the VIN. NG1 is registration. 5900, 2900 and 8800 are weights unloaded, max load and max gross .