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^^^no^^. If the cam lobe is facing upwards, what is happening in cylinder? The lobe is pushing the tappet up which is pushing the push rod up which in turn is pushing the nose of the rocker down, opening the valve. There will be zero lash and maximum pressure on all of the valve train components...

Absolutely what Rusty and Toby said. I too have seen many "NOS" parts that were rusted but able to be brought back to serviceable and some that were no longer fit for reuse. Take ALL of these components apart and check them out and don't even try to cut corners on an A2's brake system. Not only...

If it won't accelerate, look to see that the shaft and lever on the pump are BOTH moving. The throttle shaft could have seized.

The first pic with the arrow pointing at a line is NOT an anneroid, that is the hydraulic ASA line. IIRC, there is a check ball in there and the fitting is orificed. It is a noise emission device. All it is there for is to quell the "marble rattling" noise on acceleration on a rolling start...

Here's a good pic... And, you can set the overhead w/o looking at the pointer. Put a socket with a 6-10 inch extension on it on the #1 injector lever. Bar the engine until you see the extension start moving toward the exhaust side, keep barring until it stops moving, then just a tad more...on...

The only thing that pointer is used for is the overhead set. It is normally located almost directly dead center of the two outer most bolt holes in the top accessory mount pad and just a shade outward toward the accessory mount hole that runs thru the cover.......leme see if I can find a...

Trying out my new braille computer, what? You SHOULD keep the return so it returns into a head of fuel for the reasons stated above, but you can just drop it back in w/o the stand pipe, it does airiate fuel somewhat but mostly you hear an annoying hissing noise in the return. It bothers some...

Check these out....

Yes, the "transducer" is the fuel shut off valve, FSOV. It needs to pull in at crank and hols in when the engine is running. When the ignition is shut off, the FSOV releases and the shut off lever on the pump moves the rack to the zero delivery port in the pump.The FSOV will not cause prime to...

There is a procedure for that but if there were a loss of compression issue in a compression fired engine, you would have other visible signs of an in cylinder failure, like, lots of smoke out the bottom/blow by tube, popping in the intake, chuffing in the exhaust. In 30 years, never a need to...

Unless it has been shaved off, it is there....

The Tips and Tricks section is for tips and tricks...like shortcuts, posting docs, etc. you know of or have learned how to do in a different, faster, better way here on SS. Please don't post vehicle/equipment questions here, put them in the correct spot for your particular piece of equipment...

Poor connections at the 3 pin and high resistance grounds in the pull/hold in circuit cause this also. And as stated above, if an engine has been cranked with weak batteries, the coils in the FSOV get damaged. Somewhere here I posted a chart with he different types of FSOVs and their resistance...

Seen a pintle stick open before, what you want to do is a valid ts step. I'd do that. You might be able to crack the line and see if it fires better with it loose.

Rubber lines or the selector valve. Plumb a line to a bucket and see if it still loses prime.

Look at easy things first, make sure is getting full throttle.

Could be a failed ovèrflow valve.

Well, the codes POINT you in a direction, it is up to the mechanic to find the issue. I tried to tell the management monkeys at my former place of employment that but they still think that QSOL and the service supervisors are all that is needed. I was even told not too long ago that they could...

Simp, I am surprised that you haven't come up with some sort of fix/new technology for the PCB, kinda like antennaclimber did with the glow plug card on CUCV trucks

Hall Scott engines were fun to work on. LA City fire had a fleet of them back in the day, IIRC they were the 590s, 1100 CID gasser.