Page 1509 of 5267

DESCRIPTION Nꞏm Ft. Lbs. In. Lbs.
Bolts - Cylinder Head
M11 Bolts Refer To Procedure
M8 Bolts Refer To Procedure
Bolts - Cylinder Head Cover 12 - 105
Bolts - Exhaust Manifold 25 18 -
Nuts - Exhaust Manifold Heat Shield 8 - 72
Then loosen 45°
Bolts - Flexplate 95 70 -
Bolts - Engine Mount Bracket to Block 61 45 -
Bolts - Rear Mount to Transmission 46 34 -
Bolts - Generator Mounting
M10 Bolts 54 40 -
M8 Bolts 28 - 250
Bolts - Intake Manifold 12 - 105
Refer to Procedure for Tightening Sequence
Bolts - Oil Pan 15 - 130
Plug - Oil Pan-Drain 34 25 -
Bolts - Oil Pump 28 - 250
Bolts - Oil Pump Cover 12 - 105
Bolt and Nut - Oil Pickup Tube 28 - 250
Bolt - Oil Dipstick Tube to Engine Block 15 - 130
Bolts - Oil Fill Tube 12 - 105
Bolts - Timing Chain Guide 28 - 250
Timing Chain Tensioner Arm 28 - 250
Bolts - Hydraulic Tensioner 28 - 250
Bolts - Timing Chain Primary Tensioner 28 - 250
Bolt - Timing Drive Idler Sprocket 34 25 -
Bolts - Thermostat Housing 12 - 105
Bolts - Water Pump 58 43 -
Page 1553 of 5267

BLOCK-ENGINE
DESCRIPTION
The cylinder block is made of cast iron.The block is a closed deck design with the left bank forward. To provide
high rigidity and improved NVH an enhanced compacted graphite bedplate isbolted to the block. The block design
allows coolant flow between the cylinders bores, and an internal coolant bypass to a single poppet inlet thermostat
is included in the cast aluminum front cover.
STANDARD PROCEDURE - CYLINDER BORE HONING
Before honing, stuff plenty of clean shop towels under
the bores and over the crankshaft to keep abrasive
materials from entering the crankshaft area.
1. Used carefully, the Cylinder Bore Sizing Hone
C-823, equipped with 220 grit stones, is the best
tool for this job. In addition to deglazing, it will
reduce taper and out-of-round, as well as removing
light scuffing, scoring and scratches. Usually, a few
strokes will clean up a bore and maintain the
required limits.
CAUTION: DO NOT use rigid type hones to remove
cylinder wall glaze.
2. Deglazing of the cylinder walls may be done if the
cylinder bore is straight and round. Use a cylinder
surfacing hone, Honing Tool C-3501, equipped with
280 grit stones (C-3501-3810). about 20-60
strokes, depending on the bore condition, will be
sufficient to provide a satisfactory surface. Using
honing oil C-3501-3880, or a light honing oil, avail-
able from major oil distributors.
CAUTION: DO NOT use engine or transmission oil, mineral spirits, or kerosene.
3. Honing should be done by moving the hone up and down fast enough to get a crosshatch pattern (1). The hone
marks should INTERSECT at 50° to 60° for proper seating of rings (2).
4. A controlled hone motor speed between 200 and 300 RPM is necessary to obtain the proper crosshatch angle.
The number of up and down strokes per minute can be regulated to get the desired 50° to 60° angle. Faster up
and down strokes increase the crosshatch angle.
5. After honing, it is necessary that the block be cleaned to remove all traces of abrasive. Use a brush to wash
parts with a solution of hot water and detergent. Dry parts thoroughly. Usea clean, white, lint-free cloth to check
that the bore is clean. Oil the bores after cleaning to prevent rusting.
CLEANING
Thoroughly clean the oil pan and engine block gasket surfaces.
Use compressed air to clean out:
The galley at the oil filter adaptor hole.
The front and rear oil galley holes.
The feed holes for the crankshaft main bearings.
Once the block has been completely cleaned, apply Loctite PST pipe sealantwith Teflon 592 to the threads of the
front and rear oil galley plugs. Tighten the 1/4 inch NPT plugs to 20 Nꞏm (177in. lbs.) torque. Tighten the 3/8 inch
NPT plugs to 27 Nꞏm (240 in. lbs.) torque.
Page 1562 of 5267
SEAL-CRANKSHAFT OIL-FRONT
REMOVAL
1. Disconnect negative cable from battery.
2. Remove accessory drive belt (Refer to 7 - COOL-
ING/ACCESSORY DRIVE/DRIVE BELTS -
REMOVAL).
3. Remove A/C compressor mouning fasteners and
set aside.
4. Drain cooling system (Refer to 7 - COOLING -
STANDARD PROCEDURE).
5. Remove upper radiator hose.
6. Disconnect electrical connector for fan mounted
inside radiator shroud.
7. Remove radiator shroud attaching fasteners.
NOTE: Transmission cooler line snaps into shroud
lower right hand corner.
8. Remove radiator cooling fan and shroud (Refer to
7 - COOLING/ENGINE/RADIATOR FAN -
REMOVAL).
9. Remove crankshaft damper bolt.
10. Remove damper using Special Tools 8513 Insert
and 1026 Three Jaw Puller (2).
11. Using Special Tool 8511 (1), remove crankshaft
front seal.
Page 1565 of 5267
INSTALLATION
1. Lubricate the crankshaft flange with engine oil.
2. Position the magnetic seal guide Special Tool
8349-2 onto the crankshaft rear face. Then position
the crankshaft rear oil seal (1) onto the guide (2).
3. Using Special Tools 8349 Crankshaft Rear Oil Seal
Installer (2) and C-4171 Driver Handle (3), with a
hammer, tap the seal (1) into place. Continue to
tap on the driver handle until the seal installer
seats against the cylinder block crankshaft bore.
4. Install the flexplate.
5. Install the transmission.
Page 1566 of 5267
PLATE-FLEX
REMOVAL
1. Remove the transmission. (Refer to 21 - TRANS-
MISSION/TRANSAXLE/AUTOMATIC - 45RFE/
545RFE - REMOVAL).
2. Remove the bolts and flexplate (1).
INSTALLATION
1. Position the flexplate ontothe crankshaft and install
the bolts hand tight.
2. Tighten the flexplate (1) retaining bolts to 95 Nꞏm
(70 ft. lbs.) in the sequence shown.
3. Install the transmission.
Page 1577 of 5267
DAMPER-CRANKSHAFT
REMOVAL
1. Disconnect negative cable from battery.
2. Remove accessory drive belt (Refer to 7 - COOL-
ING/ACCESSORY DRIVE/DRIVE BELTS -
REMOVAL).
3. Drain cooling system (Refer to 7 - COOLING -
STANDARD PROCEDURE).
4. Remove radiator upper hose.
5. Remove upper fan shroud.
6. Using Special Tools 6958 Spanner with Adapter
Pins 8346 (1), loosen fan and viscous assembly
from water pump.
7. Remove fan and viscous assembly.
8. Disconnect electrical connector for fan mounted
inside radiator shroud.
NOTE: Transmission cooler line snaps into shroud
lower right hand corner.
9. Remove crankshaft damper bolt.
10. Remove damper using Special Tools 8513 Insert
and 1026 Three Jaw Puller (2).
Page 1579 of 5267

COVER-STRUCTURAL
DESCRIPTION
The structural dust cover is made of die cast aluminum and joins the lower half of the transmission bell housing to
the engine bedplate.
OPERATION
The structural cover provides additional powertrain stiffness and reduces noise and vibration.
REMOVAL
1. Raise vehicle on hoist.
2. Remove the left hand exhaust pipe from exhaust
manifold.
3. Loosen the right hand exhaust manifold-to-exhaust
pipe retaining bolts.
4. Remove the eight bolts (1,2,3) retaining structural
cover in the sequence shown.
5. Pivot the exhaust pipe downward and remove the
structural cover.
INSTALLATION
CAUTION: The structural cover must be installed
as described in the following steps. Failure to do
so will cause severe damage to the cover.
1. Position the structural cover in the vehicle.
2. Install all four bolts (1,2,3)retaining the cover-to-en-
gine . DO NOT tighten the bolts at this time.
3. Install the four cover-to-transmission bolts (1,2,3).
Do NOT tighten at this time.
CAUTION: The structural cover must be held
tightly against both the engine and the transmis-
sion bell housing during tightening sequence. Fail-
ure to do so may cause damage to the cover.
4. Starting with the two rearcover-to-engine bolts,
tighten bolts (1) to 54 Nꞏm (40 ft. lbs.), then tighten bolts (2) and (3) to 54Nꞏm ( 40 ft. lbs.) in the sequence
shown.
5. Install the exhaust pipe on left hand exhaust manifold.
6. Tighten exhaust manifold-to-exhaust pipe retaining bolts to 20–26 Nꞏm(15–20 ft. lbs.).
Page 1584 of 5267
MOUNT-REAR
REMOVAL
1. Raise the vehicle on a hoist.
2. Using a suitable jack, support transmission.
3. Remove the nuts from the transmission mount (1).
4. Remove the two bolts that attach the transmission
mount to the engine bracket.
5. Raise the transmission enough to remove the
mount from the crossmember (2).
6. Remove the mount (1).
INSTALLATION
NOTE: Threadlocking compound must be applied to the bolts before installation.
1. Install the two bolts that attach the transmission mount to the transmission bracket.
2. Torque the bolts to 61Nꞏm (45 ft.lbs.) torque.
3. Lower the transmission so the transmission mount rests on the crossmember, and the studs of the transmission
mount are aligned in the slots in the crossmember.
4. Install the nuts onto the transmission mount studs through the crossmember access slot.
5. Torque the nuts to 54Nꞏm (40 ft. lbs.).