2006 DODGE RAM SRT-10 Service Repair Manual

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Page 1985 of 5267

DODGE RAM SRT-10 2006 Service Repair Manual 6. With the tappet in place, rotate the trough one half
turn so the open side is down (toward crankshaft).
7. Remove the tappet installation tool from the tappet.
8. Re-install a dowel rod and secure

Page 1986 of 5267

DODGE RAM SRT-10 2006 Service Repair Manual PISTON & CONNECTING ROD
DESCRIPTION
PISTONS
The piston is constructed of aluminum and is gravity
cast, free floating design. The piston incorporates a
centrally located high swirl combustion bowl, and

Page 1987 of 5267

DODGE RAM SRT-10 2006 Service Repair Manual REMOVAL
1. Disconnect the battery cables.
2. Remove the cylinder head (Refer to 9 - ENGINE/CYLINDER HEAD - REMOVAL).
3. Remove the oil pan and suction tube (Refer to 9 - ENGINE/LUBRICATION/OILPA N - R

REMOVAL
1. Disconnect the battery cables.
2. Remove the cylinder head (Refer to 9 - ENGINE/CYLINDER HEAD - REMOVAL).
3. Remove the oil pan and suction tube (Refer to 9 - ENGINE/LUBRICATION/OILPA N - R E M O VA L ) .
4. Remove bolts and the block stiffener.
5. Using Miller Tool 7471-B crankshaft barring tool, rotate the crankshaft so all of the pistons are below TDC.
6. Before removing the piston(s) from the bore(s):
a. Remove any carbon ridge formations or deposits at the top of the bore witha dull scraper or soft wire brush.
b. If cylinder bore wear ridges are found, use a ridge reamer to cut the ridgefrom the bore. DO NOT remove
more metal than necessaryto remove the ridge.
7. Remove the J-jet cooling nozzles.
NOTE: If cylinders have ridges, the cylinders are oversize and will more than likely need boring.
8. Using a hammer and steel stamp, stamp the cylinder number in the top of eachpiston.Thefrontofthepiston
is identified by a stamping on the top of the piston. DO NOT stamp in the outside 5 mm (.197 in.) of the piston
diameter. DO NOT stamp over the piston pin.
9. Mark the connecting rod and cap with the corresponding cylinder numbers.
10. Remove the connecting rod bolts and rod caps. Use care so the cylinder bores and connecting rods are not
damaged.
11. Use a hammer handle or similar object to push the piston and connecting rod through the cylinder bore.
12. Store the piston/rod assemblies in a rack.
CLEANING—PISTON AND CONNECTING ROD
CAUTION: DO NOT use bead blast to clean the pistons. DO NOT clean the pistonsandrodsinanacidtank.
PISTON
Clean the pistons and pins in a suitable solvent, rinse in hot water and blowdry with compressed air. Soaking the
pistons over night will loosen most of the carbon build up. De-carbon the ringgrooveswithabrokenpistonringand
again clean the pistons in solvent. Rinse in hot water and blow dry with compressed air.
CONNECTING ROD
Clean the connecting rods in a suitable solvent, rinse in hot water and blowdry with compressed air.
INSPECTION
INSPECTION - PISTONS
PISTON SKIRT DIAMETER (MIN.)
101.775 mm (4.006 in. )
Inspect the pistons for damage and excessive wear. Check top of the piston,ring grooves, skirt and pin bore. Mea-
sure the piston skirt diameter. If the piston is out of limits, replace the piston.

Page 1988 of 5267

DODGE RAM SRT-10 2006 Service Repair Manual The upper groove only needs to be inspected for dam-
age. Use a new piston ring (2) to measure the clear-
ance in the intermediate ring groove. Minimum
clearance is 0.045 mm (0.0018 inch), maximum cle

Page 1989 of 5267

DODGE RAM SRT-10 2006 Service Repair Manual INSPECTION - CONNECTING ROD
Inspect the connecting rod for damage and wear. The
I-Beam section of the connecting rod cannot have
dents or other damage. Damage to this part can
cause stress risers whic

Page 1990 of 5267

DODGE RAM SRT-10 2006 Service Repair Manual a. The connecting rod split/face mustface toward the same side as the piston notch feature on the skirt. The
split face will face toward the exhaust side of the engine if properly installed.
11. Insta

Page 1991 of 5267

DODGE RAM SRT-10 2006 Service Repair Manual RINGS - PISTON
STANDARD PROCEDURE - PISTON RING FITTING
1. Determine the piston diameter and obtain the
appropriate ring set. The piston rings can be iden-
tified as shown.
2. Position each ring in th

Page 1992 of 5267

DODGE RAM SRT-10 2006 Service Repair Manual 7. Install the intermediate piston ring in the second
groove.
8. Install the top piston ring in the top groove.
9. Position the rings as shown.
Install top and second compression rings on pis-
ton wit

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