VALVE_LASH_ADJUSTMENT.doc

VALVE ALVE LASH ADJUSTMENT ADJU STMENT 2003-2007 CUMMINS 5.9L Note: To obtain a!"ate "ea#in$%& 'a('e (a%) *ea%!"e*ent an# a#+!%t*ent% %)o!(# on(, be e"o"*e# /)en t)e en$ine oo(ant te*e"at!"e i% (e%% t)an 0 #e$"ee% C 10 #e$"ee% 4.

(1) Disconnect Disconnect negative negative battery battery cables (2) Remove cylinder cylinder head cover cover.. (3) Using the crank shaft shaft bearing tool #771!" #771!" (recommended (recommended by $mmins)% $mmins)% rotate crankshaft to align dam&er 'D mark to 12 o*clock &osition. a! +f both both n$mber 1 cylinder cylinder rocker rocker levers levers are are loose% contin$e contin$e to ne,t ne,t ste&. ste&.  b! +f both n$mber one rocker levers are not loose% rotate crankshaft 3- degrees. () ith ith the engine in this &osition% valve lash can be meas$red at the follo/ing rocker arms Inta6e -2-  E8)a!%t -3-5. 0eas$re the valve lash by inserting a feeler ga$ge bet/een the rocker arm socket and crosshead. Refer to  4 4 56 +0+' 6R' 6R' for the correct s&ecifications. +f the meas$rement falls /ithin the limits% ad$stment8resetting ad$stment8resetting is not necessary. necessary. +f meas$rement finds the lash o$tside of the limits% ad$stment is re9$ired. VALVE ALVE LASH LIMIT LIMI T CHAT INTAE 0.52 ** 10.00 in. MIN. 0.3< ** 10.05 in. MA;.

E;HAUST 0.3< ** 10.05 in. MIN. 0.72 ** 10.030 in. MA;.

Note: I *ea%!"e# 'a('e (a%) a((% /it)in t)e%e %eiiation%& no a#+!%t*ent i% nee%%a",. En$ine oe"ation /it)in t)e%e "an$e% )a% no a#'e"%e aet on e"o"*ane& e*i%%ion%& !e( eono*, o" (e'e( o en$ine noi%e.

(:) +f ad$stment is re9$ired% loosen the lock n$t on the rocker arms and t$rn the ad$sting scre/ $ntil the desired lash is obtained !Inta6e .2: mm (.1 in.) !E8)a!%t .:; mm (.2 in.) 'ighten the lock lock n$t to 2 <.m (1; ft. ft. lbs) and recheck the valve lash. (-) Using the crankshaft crankshaft bearing bearing tool% rotate the crankshaft crankshaft one revol$tion revol$tion to align the dam&er 'D mark to the 12 o*clock &osition. (7) ith ith the engine in this &osition &osition%% valve lash can be meas$red meas$red at the remaining remaining rocker arms Inta6e 3-5-  E8)a!%t 2-- . Use the same method as above for  for  determining /hether ad$stment is necessary% and ad$st those that are fo$nd to  be o$tside of the limits. (;) +nstall +nstall the the cylinder cylinder head head cover cover. (=) onnect the negativ negativee battery battery cables. cables.