so iam going to attempt adjusting my valves tomorrow, i've done lots of work on smaller motors and chevy small blocks but nothing to a diesel, they have never been adjusted in 250,000km and i can hear them starting to click, so iam goin in there tomorrow.
anyone have any tips for me or info to get me ready for any stubborn issues?

 

Mark the TDC on the front balancer first, makes it easier to see. If you don't have a barring tool you can use a fan wrench to turn crankshaft. I usually put a little dab of white paint on the rocker arm that I have adjusted also. Makes it less confusing then follow the adusting procedure and you should be alright.

 

i use the one of the four bolts on the front of the crank holding the belt pulley on........ a socket and ratchet is all you need

 

how do i line up bottom dead center? is it on the balancer?

 

The barring/turning tool makes it alot easier. The hole is back behind the turbo on the flywheel housing. It can also be turned by a crankshaft bolts. There should be an engraved line on the balancer. Put it to 12 oclock, remove valve cover, adjust 1/2 of the valves, turn the motor 360', set the other 1/2. Or if cant see the mark, can use the valve over lap method.

 

360'? or 180?

 

never mind, i figured er out. thanks guys

 

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 (Refer to 9 - ENGINE/CYLINDER HEAD/CYLINDER HEAD COVER(S) - REMOVAL).
Using the crankshaft barring tool #7471–B, 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 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.



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 (Refer to 9 - ENGINE/CYLINDER HEAD/CYLINDER HEAD COVER(S) - INSTALLATION).
Connect the battery negative cables.