valve adj

[kenkankys]

any threads for valve adj for 2005 5. 9 HO

 

[AllianceDiesel]

why are you adjusting the valves, you only need to adjust them every 100,000 miles unless you have a performance issue.



Mopar

Alliance Dodge

 

[AllianceDiesel]

STANDARD PROCEDURE - VALVE LASH ADJUSTMENT AND VERIFICATION

NOTE: To obtain accurate readings, valve lash measurements AND adjustments should only be performed when the engine coolant temperature is less than 60° C (140° F).



The 24-valve overhead system is a “low-maintenance” design. Routine adjustments are no longer necessary, however, measurement should still take place when trouble-shooting performance problems, or upon completion of a repair that includes removal and installation of the valve train components or injectors.



Disconnect battery negative cables.

Remove cylinder head cover, rotate crankshaft to align damper TDC mark to 12:00 o'clock position. If both number one cylinder rocker levers are loose, continue to next step. If both number one clylinder rocker levers are not loose, rotate crankshaft 360 degrees. With the engine in this position, valve lash can be measured at the following rocker arms: INTAKE 1-2-4 / EXHAUST 1-3-5.



Measure the valve lash by inserting a feeler gauge between the rocker arm socket and crosshead. Refer to VALVE LASH LIMIT CHART for the correct specifications. If the measurement falls within the limits, adjustment/resetting is not necessary. If measurement finds the lash outside of the limits, adjustment/resetting is required.

VALVE LASH LIMIT CHART

INTAKE . 010

EXHAUST . 020



NOTE: If measured valve lash falls within these specifications, no adjustment/reset is necessary. Engine operation within these ranges has no adverse affect on performance, emissions, fuel economy or level of engine noise.



If adjustment/resetting is required, loosen the lock nut on rocker arms and turn the adjusting screw until the desired lash is obtained:

INTAKE 0. 254 mm (0. 010 in. )

EXHAUST 0. 508 mm (0. 020 in. )

Tighten the lock nut to 24 Nm (18 ft. lbs. ) and re-check the valve lash.

Using the crankshaft barring tool, rotate the crankshaft one revolution (360°) to align the damper TDC mark to the 12 o'clock position. With the engine in this position, valve lash can be measured at the remaining rocker arms: INTAKE 3-5-6 / EXHAUST 2-4-6. Use the same method as above for determining whether adjustment is necessary, and adjust those that are found to be outside of the limits.

Install the cylinder head cover.



Mopar

Alliance Dodge

 

[pwknapp]

Just did mine this weekend with another guy with an 07 and what a difference. Some intakes were way tight and some exhaust way loose. His truck was sounding like a 12 valve when we started. Both trucks ran much smoother when done. Afterwards I would not trust that the settings were correct out of the factory. By the way mine had 26k and his 38k.



Did set them to 10 and 20 thou not 26 thou as on the valve cover. Settings confirmed by a call to Cummins.

 

[AllianceDiesel]

I think they went to a little more tollerance on the exhaust for more expansion, ya just looked on dealerconnect and it says for the 07 and newer 10/26

 

[kenkankys]

thanks for the reply but I need to know how and where to time or timing marks

 

[AllianceDiesel]

there should be a line on the crankshaft dampener just turn the engine with a wrench until the mark is strait up, if your #1 rockers are both loose then go on with the test if it isn't than rotate it one revolution and check again.

 

[SShafranko]

Just got mine done. Runs a lot smoother and better. Paid $89. 00. For that price i'll do them every three months

 

[kenkankys]

well thanks for the replies, but I must have a defect there are no timing marks on damper or under inspection cover for injection pump so for any one else with such an issue I will explain how to adjust lash regardless of TDC/BDC more time consuming just rotate crank until intake valves are fully open you now can adjust the exhaust valves do this to the 1 cyl rotate crank until exhaust valves are fully open now adjust intake valves repeat 2 3 4 5 6 time consuming but effective

 

[BHolm]

I would find it difficult to believe your dampner doesn't have a hash mark in it, they all do, it just might be tough to see.



I did mine at 75k miles, some were out worse than others but it made no difference in sound or performance for me.

 

[FJfonda]

See TDR issue 54 page 48 --- a full write up. Just completed mine, biggest challenge was finding the timing mark on the dampner as there was corrosion in that same spot. At 45K miles, all the lash was in spec ---> nominalized all and quited the valve train noise down significantly.

 

[pwknapp]

The friend who helped with mine (24 yrs diesel exp. ) simply put on a remote starter button and bumped the engine until the #6 hole valves were "quiet" then adjusted both intake and exhaust. Repeated on 5,4,3,2,1 and was done.

Maybe 30 minutes tops.