Oil Capacity: 

1994: 10 qt. (9.5 L) with filter 
11 quarts using Cummins p/n 3928740 or Dodge p/n 4796874 dipstick 
11 qts by marking the dipstick 1 3/16" above the "ADD" mark 

1995-98: 11 qt. (10.4 L) with filter

Valve System: 

OHV, 12 valves, solid sliding tappet lifter/followers 
Valve Adjustment (engine cold) 
Intake = 0.010" Exhaust = 0.020" 
Adjustment interval - 24,000 miles 

Fuel System:

Valve Specs

seat angle:(degree) = 30
face angle:(degree) = 45
spring test pressure:(lbs.@in.) = 81@1.64
spring installed height:(in.) = 2.36

stem-to-guide clearance:(in)
intake = 0.002
exhaust = 0.006

stem diameter:(in.)
intake = 0.313 - 0.314
exhaust = 0.313 - 0.314

Turbocharger specifications:

Big Thanks to Illflem for some of the information precent in this article

Dowel Pin Repair Kit for 94-98
If you have heard of “dowel pin issues” on the 12 valve Cummins 5.9 with the P7100 Bosch injection pump then you may already have taken care of your truck. This dowel pin issue applies to all ’89-’98 12 valve Rams with Cummins engines and many other non-Dodge Cummins 12 valve engines. If you have not heard of the issue, or you heard yet have done nothing and you are the owner of one of these vehicles, listen up. A dowel pin failure could destroy your engine completely or do no damage at all.

The aluminum front gear housing on the 5.9 Cummins is precisely located on the front of the cast iron engine block using dowel pins. The dowel pin is about 3/8 inch diameter by 3/4inch length made of steel. During engine assembly the dowel pins are driven into holes drilled in the block such that about half their length protrudes. Matching holes in the gear housing permit a precise fit of the housing the block. Several cap screws are used to hold the housing to the block. The problem with the dowel pin occurs because the hole in the aluminum gear housing was drilled through. During engine operation vibration could cause the dowel pin to work its way out of the hole and fall into the gear case. When the dowel pin falls, it can drop right to the oil pan or land in the gear housing, causing no damage at all. 

On the other hand, the pin can be caught in the camshaft gear and forced into the aluminum gear housing, breaking out a big chunk of the housing which would cause a huge oil leak and an expensive, time consuming failure. 

Worst-case failure is when the dowel pin goes between the cam and crank gears, or cam and injection pump gears, breaking the gear off the camshaft. The camshaft stops rotating instantly causing valves to stop operating, leaving some valves open and some closed. The crankshaft continues to rotate for a few seconds, slamming pistons into valves, and possibly ruining block, crank, rods, cylinder head, and valve train. Almost no reusable parts in this case, a complete engine swap could be required.

If you are the owner of one of these 12 valve 5.9 engines and you haven’t taken preventive action, we suggest you take action before the vehicle strands you in a bad location and sticks you with an expensive repair bill. TST offers a “Dowel Pin Kit” that includes the parts you need to access the dowel pin, positively lock it in place so that it does not come out. Installing this kit requires removal of the engine fan shroud, fan, damper, and front gear cover to gain access to the dowel pin. Once the dowel pin is secured, a new crankshaft seal included in the kit is installed in the gear cover and all parts are reinstalled. This kit sells for $65 and takes about 4 hours to install. See http://www.tstproducts.com/DowelPina.pdf for complete installation instructions.

Cummins also has all the parts you need:

• Blocking tab # CM3958017 (Or Make your own)
• Front seal # CM3804899
• Timing cover gasket # CM3918673
•  

Stock KDP

Tabbed KDP.  Finding something to make the tab out of is a good place to get creative.  strength isn't a big deal, you can even use a pop can.

Typical KDP caused case crack and pin with cover removed

View from the top, fan bearing housing almost always needs to be removed to see

More severe but common damage

Even more severe, cracked gear

Side view of cracked gear

If you have any further questions, please feel welcome to ask them on the Mopar1973Man Forum.

The first thing you need to do is pull the valve covers off the engine. You'll need a socket and a 3/8" ratchet. Loosen all the bolts till you can lift the bolt up. Don't bother removing the bolts from the valve cover. Once you got that the valve covers will come off. Just lift the 6 covers straight up.

Now you need to use your 1/2" ratchet and the 15/16" socket to rotate the alternator. You want to turn it towards the passenger side (or towards coolant bottle). You want to get the gear to be in the TDC (Top Dead Center) using the timing pin found under the injection pump.

Mopar's Notes

Once TDC found using the timing pin mark the damper and the gear case in one spot denoting TDC. There is a reason for this...

Now check the rocker arms on number 1 cylinder. both should be loose at this point. If not check both rockers on cylinder number 6. If cylinder number 6 is loose then your 360° out on the crank, so rotate another 360° till you line up on your TDC marks again.

WARNING! Be sure that the timing pin is pulled out of the gear before rotating the engine. Otherwise damage to the timing pin will occur!

Here is the valve clearance measurement

But if you followed my suggestion above now you wouldn't need to mess with that pin anymore! But for making things simple we'll start at TDC of number 1 cylinder with both rockers loose.

now rotate the engine crank 360° again so now cylinder number 6 rockers should be loose. Using your new timing marks on the damper.

Now reassemble the valve covers.