theakerstwo

If you had side way movement on the rods with pressure on the crank then you can say the pistons are not holding any pressure from turning so that is the simple way to see if you have rust or gravel or any thing on the top of the pistons or rust on the cylinder walls now you can check some thing else like ???

I have done many of them that way . Now no one will weld on a tank because of the libility aspect of it. I always said the tank straps is what people should worry about for as breaking.

i start to work on trucks when those was still in production. I miss working on them and have had two of them my self and still have one. Being young and a up start and wanting to learn i had a good job working on them and i guess i always though they looked good . I like the one that was around here for years parked and dont know what happen to it but it was on 22" budds with a endt673 and a quad with long wheel base and round tanks with the large air cleaner and i was in love with it but the owner always said that he keep it and told his drivers if they tore up any more trucks they would have to drive the mack and not many drivers wanted to drive a two stick box. It is too bad i dont have money to burn or i would have a lot of macks maybe a B75.

Rob that is a # 6 line and it dont need to be reducted by the fitting any so a stroflex is the best . I would not use a push on like stragrip because that hose cares a lot of heat and if a air ride trailer is used then it is realy hot and a straflex hose is going to wear better because were that hose runs it can rub on alot of things. That can be a single brad hose.

What i am saying to do is hold pressure like trying to turn the engine and when it is locked shack each rod and the rods should be free and that will show you that there is no problen with somthing in the cylinder or with rust in the cylinder locking the piston cause if the piston is locking the you will not be able to mone that rod on the crank. And the side clearence has to be checked ever time the rod cap is taken off ever time new or worn out engine and the way to get your clearance is losen the cap a little and pry the rod over against the rod and hold it there and use a small harmer and tap the cap the same way then torque and check clearance and if ok go but if not make some clearance or you cane ruin the rod or crank or both. i have seen it done.

Also when you torque those rod brgs make sure and check the side clearence on them from side to side on the crank witha feeler gage. should have about .007 clearance or you can burn the thrust surface on the rod. Very important. If you did not i would and i mean have some one hold pressure on the crank against the locked place and get under and shavk each rod for side clearance like i said and if you find a cylinder that is holding the engine from turning then that rod cap will not be able to shack back and forth like the rest. It could have some rust on the cylinder walls of the liner and that is a way to find if it is a piston in a bind. You can check back lash between the cam gear and the fuel pump drive gear by removeing the small cover in front of the fuel pump and with some one holding pressure on the crank against the locked place then try to get some back lash between the cam gear and fuel pump drive gear and letr off of the crank and see if you have any more. I you dont get any back lash and i am talking about using a screw drive then they may be a problen in the pump drive or pump. I dont think i have ever saw a fuel pump lock a engine. Have you tryed to turn engine with the clutch down? glenn

As long as the injectors have a return back to the tank you are ok.

I ant going to fool with any ones wife, too dangerous. glenn

If that engine does start with a stuck rack you may have a runaway and it could kill you. I have seen a mack run so fasthat it brock a fan blade and it when thru the hood not more 4 ft behind a mechanic that was running away from it. if you are lucky enough to get it free enough to start you may not get it to stay free and if you are ready to meat the load then think along time before you try to start it the next time. when one runs away that means you cant stop it.

Glad to hear things are getting better for you i know it ant as much fun being sick any more as it used to be. I have had pneumonia 4 times in 2 years and it is had to get over it each time. glenn

The valve is wired up right i have seen them both ways but i do not know which way dot wants it to work but it will work ok like that.

That makes sense with it conected to the service brake that way when you hit the brakes it will spit. glenn

If you take the top off of the governor you can feel the rack and it should move in and out . If it will not move it has to have the barrels and plungers re worked. If it will not move freely you dont whant to start because if could overspeed and kill you. If it moves the plungers lifers could still be stuck up but with the dry fuel we have now it is a thing that we see more ever day .If you have to buy a pump i have one off of a running engine.

Well guys let me tell you some things i found out years ago. I have been a truck mechanic for 41 years and i have worked for some sorry little wantabes and it took me a long time to understand why we work for some times a real winner. I started out wandering why do they have crap running the shop but then i said to my self it is simple because first place the management needs some one that wants the job in the first place and he may not be any good any were else. So it would not make good sense to take me and put me up there when i dont want it begine with. Then some times it is good to have some one there that can lie his way out of a beating and he may be good at talking and not doing any thing and who knows want all. Some time i know upper management does not know what is going on and they look at the bottom line. We are there and see and hear and most of us dont run and tell on him so no body knows any thing about the dumb stuff. A lot of times the forman or dispacher may know more about the story than we do so in the latter years i let them do there thing and i find in the end they are only hurting there self. I have been out in the lot with them serval times and it dont do any good. It may help for a while but i feel that those rascels will stab you in the back to get even with you when you ant looking. I remember years ago a dispacker had a steel cage around his office so driver could noy get ahold of him. I remember when drivers would tell about buying a good load from the dispacher.

I am thinking a photo could jog my mine not sure but may have been in them but my mine works better when i can see it.

The carriers will not bolt into the old B61 axle housings. glenn

Fill filter to top and atart and then loosen the filler plug and let air out when running and that way you will not spin a rod brg.

Yes i remember them as well as a707 gas burner which look like the same block except the machining for the injection punp and may not had liners but never was in one.

may be the same deal on a 711 it is a 707 ci engine. The 864 was called later 865, 866 I have seen a Lanovia and i think the block was the same design as the 673 also.

Larry you need to bleed that filter for sure because that is too much air having to go thru the brg before the oil gets there.the best way to do it is with a funnel fill the filter and then bleed when you start but dont take the plug out when running. You can put the screw on base on that setup and get away from that filter but there is a check valve in the bottom that keeps the filter from draining back to the pan on your filter. I have put the screw on and oil cooler set up on a b61 engine before. My b61 has the three filter set up but it is a late model i think a 320 with a air/air on the front instead of the mack after cooler.

Larry i go look and no find any real mack manuals that old but in the green motors book it show 15 qts and on one engine like the end 673y and 711 it shows 19 qts so then add you filter and i think nthe full flow takes 10 qts and the little 500 would maybe take 6qts. i am going to say i dont know for sure to keep from messing some one up.

Well i am working on my membery so after while i will look at some old stuff if i ncan find. I know i am losing it but i will see.

Yes i have seen that happen to a 1693 one time it throwed all of the belts off of it and the driver saw that it was not charging so he called me .I said it may have locked the alternator with a bad brg so he said will have it towed in to the shop and one of the guys came up and said come look at this. There was a big cat cut into and i guess when the truck was sitting over night the cat got up there and got in the belts and throwed them but this was a big cat i mean one that could make a dog go up a tree and that has been 25 years ago but i remember the dead cat.

If it has the big oil filter with 3 oil lines on the bottom i would use 32 qts and if it has the 500 luberfiner the maybe 28 qts. The 500 luberfiner will have 2 lines at the bottom. If it has the fullflow with 3 lines on it then when you change it fill it up to the top and bleed the air out when you start it. glenn Revised I dont know any more.