2006 DODGE RAM SRT-10 Service Repair Manual

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Page 2113 of 5267

DODGE RAM SRT-10 2006 Service Repair Manual 5. Remove the crankshaft oil scraper nuts (1) and oil
scraper (2).
CAUTION: DO NOT use a number stamp or a
punch to mark connecting rods. Damage to con-
necting rod could occur.
6. Inspect connecting

Page 2114 of 5267

DODGE RAM SRT-10 2006 Service Repair Manual PISTON
1. Inspect all piston surfaces for nicks and scuffs.
2. Inspect piston and ring grooves for wear.
INSTALLATION
NOTE: Pistons and connecting rods are serviced
as an assembly. Left bank pistons a

Page 2115 of 5267

DODGE RAM SRT-10 2006 Service Repair Manual 8. Install the crankshaft oil scraper (2) and nuts (1).
Torque nuts (1) to 23 Nꞏm (200 in. lbs.).
9. Install oil pump pick up tube (2) using anewo-ring
(4). Torque 1/4-20 bolt to 11 Nꞏm (95 in. lb

Page 2116 of 5267

DODGE RAM SRT-10 2006 Service Repair Manual RINGS-PISTON
STANDARD PROCEDURE - MEASURING PISTON RING CLEARANCES
1. Wipe cylinder bore clean. Insert ring and push
down with piston to ensure it is square in bore. The
ring gap measurement must be m

Page 2117 of 5267

DODGE RAM SRT-10 2006 Service Repair Manual INSTALLATION
The No. 1 (1) and No. 2 (2) piston rings have a differ-
ent cross section. Install rings with manufacturers I.D.
mark facing up, to the top of the piston.
CAUTION: Install piston rings in

Page 2118 of 5267

DODGE RAM SRT-10 2006 Service Repair Manual 5. Position piston ring end gaps as shown.
6. Position oil ring expander gap at least 45° from the
side rail gaps butnoton the piston pin center or
on the thrust direction. Staggering ring gap is
imp

Page 2119 of 5267

DODGE RAM SRT-10 2006 Service Repair Manual BEARINGS-CONNECTING ROD
DESCRIPTION
The bearing caps are not interchangeable and should be paint marked or scribed at removal to insure correct
assembly.
The bearing shells must be installed so that t

BEARINGS-CONNECTING ROD
DESCRIPTION
The bearing caps are not interchangeable and should be paint marked or scribed at removal to insure correct
assembly.
The bearing shells must be installed so that the tangs are in the machined grooves in the rods and caps.
Limits of taper or out-of-round on any crankshaft journals should be held to 0.013 mm (0.0005 in.). Bearings are
available in 0.025 mm (0.001 in.), 0.051 mm (0.002 in.), 0.076 mm (0.003 in.), 0.254 mm (0.010 in.) and 0.305 mm
(0.012 in.) undersize.Install the bearings in pairs. Do not use a new bearing half with an old bearing half. Do
not file the rods or bearing caps.
STANDARD PROCEDURE
CONNECTING ROD BEARING - FITTING
Fit all rods on one bank until complete. Do not alternate from one bank to another, because when the rods are
assembled to pistons correctly, they are not interchangeable from one bank to another.
The bearing caps are not interchangeable and should be marked at removal toinsure correct assembly.
The bearing shells must be installed so that the tangs are in the machined grooves in the rods and caps.
Limits of taper or out-of-round on any crankshaft journals should be held to 0.013 mm (0.0005 in.). Bearings are
available in 0.025 mm (0.001 in.), 0.051 mm (0.002 in.), 0.076 mm (0.003 in.), 0.254 mm (0.010 in.) and 0.305 mm
(0.012 in.) undersize.Install the bearings in pairs. Do not use a new bearing half with an old bearing half. Do
not file the rods or bearing caps.
1. (Refer to 9 - ENGINE/ENGINE BLOCK/CONNECTING ROD BEARINGS - STANDARD PROCEDURE) - Mea-
suring Connecting Rod Bearing Clearance to determine bearing clearance.
2. Before installing the connecting rod cap bolts, the bolt threads shouldbe oiled with engine oil.
3. Install bolts finger tight, then alternately torque each bolt to assemble the cap properly.
4. Tighten the connecting rod bolts to 68 Nꞏm (50 ft. lbs.).
MEASURING CONNECTING ROD BEARING CLEARANCE
Engine crankshaft bearing clearances can be deter-
mined by use of Plastigage (1) or equivalent. The fol-
lowing is the recommended procedure for the use of
Plastigage:
1. Rotate the crankshaft until the connecting rod to be
checked is at the bottom of its stroke.
2. Remove oil film from surface to be checked. Plas-
tigage is soluble in oil.
3. Place a piece of Plastigage (1) across the entire
width of the bearing shell in the bearing cap
approximately 6.35 mm (1/4 inch.) off center and
away from the oil hole. In addition, suspect areas
can be checked by placing plastigage in the suspect area.
4. Before assembling the rod cap with Plastigage in place, the crankshaft must be rotated until the connecting rod
being checked starts moving toward the top of the engine. Only then should the cap be assembled and torqued
to specifications.Do not rotate the crankshaft while assembling the cap or the Plastigage maybe
smeared, giving inaccurate results.

Page 2120 of 5267

DODGE RAM SRT-10 2006 Service Repair Manual 5. Remove the bearing cap and compare the width of
the flattened Plastigage with the metric scale pro-
vided on the package. Locate the band closest to
the same width. This band shows the amount of
cl

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