slimpicken

What all is involved in adjusting the valve lash on these trucks? Mine is over 100k and is smoking at idle so i need to get it adjusted. I wasn't sure if thats something I can handle or not.
Thanks for your help

skynyrd

its pretty simple if you do a seach there is a write up DTR about adjusting the valves on a 24valve. i did mine yesterday took me about 30-45 mins

gus's 03

https://www.dieseltruckresource.com/...d.php?t=168398

tools.
10 mm for cover bolts
9/16 and a 5mm allen wrench for the adjustments
15mm on a long 1/2 drive to turn the motor over..

140k on the clock, mine were LOOSE!
recomended specs are .010/. 020
int tolerance .006/.014
exhaust tolerance .016/.024
i set mine .008/.018

directly from svc man:


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.
(1) Disconnect battery negative cables.
(2) Remove cylinder head cover (Refer to 9 -
ENGINE/CYLINDER HEAD/CYLINDER HEAD
COVER(S) - REMOVAL).
(3) Using the crankshaft barring tool #7471–B,
rotate crankshaft to align damper TDC mark to
12:00 o’clock position.
(a) If both number one cylinder rocker levers are
loose, continue to next step.
(b) If both number one clylinder rocker levers
are not loose, rotate crankshaft 360 degrees.
(4) 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 (Fig. 32). 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 EXHAUST
0.152 mm ( 0.006 in.)
MIN.
0.381 mm (0.015 in.)
MIN.
0.381 mm (0.015 in.)
MAX.
0.762 mm (0.030 in.)
MAX.
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.
(5) If adjustment/resetting is required, loosen the
lock nut on rocker arms and turn the adjusting screw
until the desired lash is obtained:
²




INTAKE 0.254 mm (0.010 in.)

²




EXHAUST 0.508 mm (0.020 in.) Tighten the

lock nut to 24 Nm (18 ft. lbs.) and re-check the valve
lash.
(6) Using the crankshaft barring tool, rotate the
crankshaft




one revolution (360°) to align the

damper TDC mark to the 12 o’clock position.
(7) 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.
(8) Install the cylinder head cover (Refer to 9 -
ENGINE/CYLINDER HEAD/CYLINDER HEAD
COVER(S) - INSTALLATION).
(9) Connect the battery negative cables.

slimpicken

thanks for the help guys. Where can i find a feeler gauge??

dodge00

any auto parts store has them.

skynyrd

it took me all of 20-30 mins to adjust mine