Why do I need to adjust my valves every 200 miles???

I agree That doing each individual cylinder is more accurate, but for a novice (valve train adjuster) it's a little tiresome and easier to make a mistake.

ValveAdjustement.jpg


I drew that up. CAT uses something similar to that but they use color codes.

If you are on TDC #1, Follow the chart from top to bottom. Same as if you start with #6. If you crank it to TDC and #1 valves are tight, check #6 and start with them.

And so far, a perkins is the only inline motor i've encountered that requires more than one rotation to get all of the valves. It follows what the others are saying about adjusting each valve on the inner base circle of the camshaft.
 
Tate said:
the inner base circle of the camshaft.
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thats called the heel

if ya care

ea lobe has a nose and a heel

i think there is a reason why they are named after body parts

the cam is the brain of the recip engine

make it a great day!
 
Man Bus, this is weird. When Relentless adjusted the valves the last time did they mention that one rocker was out more than the rest?
It would be really strange to have them all out of wack?
If it's only one, as said earlier in your thread, it has got to be a cam lobe or valve seat.
 
DTanklage said:
or you could just do it the way its listed on pg 1?

adj the int when the ex for that cyl starts to open and adj the ex when the int for that cyl starts to close

its actually more accurate to adj them this way

a 2 position method is easy, but what do you want?

easy or accurate?

with the 2 position method it is possible for 2 of the valves to be slightly on the ramp

in ea position...

so you stand the chance of having 4 loose valves

or do it as above and you know they are all correct

good luck with it, don
Click to expand...


Never said this wouldn't work. But its faster and easier to do the two position method. And when we have tolerances of 33% under and 50% over nominal spec, I wouldn't be too concerned with absolute accuracy. But to each his own.
 
Snedge said:
Man Bus, this is weird. When Relentless adjusted the valves the last time did they mention that one rocker was out more than the rest?
It would be really strange to have them all out of wack?
If it's only one, as said earlier in your thread, it has got to be a cam lobe or valve seat.
Click to expand...

well last time i went in chris' helper did it cuz was busy and i was in a hurry so he didnt get to look at it, but i remember the guy saying it was more than one. chris said to see how long it goes and the next time we will start doing different things to figure it out.




how does one check the valve seats. and how are they repaired
 
If I can find a better paying job by then I'd buy it. But I wouldn't hold your breath.
 
its not really for sale....i dont think. well i guess any things for sale for the right price....just dont think any of yall got that kind of money!
 
SCHOOL BUS said:
well last time i went in chris' helper did it cuz was busy and i was in a hurry so he didnt get to look at it, but i remember the guy saying it was more than one. chris said to see how long it goes and the next time we will start doing different things to figure it out.




how does one check the valve seats. and how are they repaired
Click to expand...

Its safer to fix a valve seat before it drops off into the motor!!!!:bang
 
cant really check them w/o removing the cyl head but increasing valve clearance is a good indicator that they may be dropping

a machinist cuts them out and them some, presses new seats in, blends it, and does a valve job and its good to go

cha ching
 
WEll then you would have to loosen your fuel line clamps...


Actually something isnt right on my truck right now. Im thinking the time has come and it needs to go under the knife
 
man you gotta run faster than me cody....youre gonna run out of excuses here sooner or later :hehe:
 
idk. i think at ennis it was a 7.7 my truck was shining on the top end tho. damn traction
 
ok back on track.


so what do yall think i should do first?

i was thinking:
check lash.
document which valve(s) are loose or tight which cylinder etc for diagnosis purposes.
pull push rods, check to make sure straight
put rods back in rockers on,
lash valves with NEW nuts






i cant think of anything else. what would yall check for while in there?
 
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