1999 DODGE DURANGO Front driveshaft

Downloaded from www.Manualslib.com manuals search engine ENGINE LUBRICATION SYSTEM
DESCRIPTION
A gear-type positive displacement pump (Fig. 3) is
mounted at the underside of the rear main bearing
cap. The pump uses a pick-up tube and screen
assembly to gather engine oil from the oil pan.
OPERATION
The pump draws oil through the screen and inlet
tube from the sump at the rear of the oil pan. The oil
is driven between the drive and idler gears and
pump body, then forced through the outlet to the
block. An oil gallery in the block channels the oil to
the inlet side of the full flow oil filter. After passing
through the filter element, the oil passes from the
center outlet of the filter through an oil gallery that
channels the oil up to the main gallery, which
extends the entire length on the right side of the
block. The oil then goes down to the No. 1 main bear-ing, back up to the left side of the block, and into the
oil gallery on the left side of the engine.
Galleries extend downward from the main oil gal-
lery to the upper shell of each main bearing. The
crankshaft is drilled internally to pass oil from the
main bearing journals to the connecting rod journals.
Each connecting rod bearing has half a hole in it, oil
passes through the hole when the rods rotate and the
hole lines up, oil is then thrown off as the rod
rotates. This oil throwoff lubricates the camshaft
lobes, distributor drive gear, cylinder walls, and pis-
ton pins.
The hydraulic valve tappets receive oil directly
from the main oil gallery. The camshaft bearings
receive oil from the main bearing galleries. The front
camshaft bearing journal passes oil through the cam-
shaft sprocket to the timing chain. Oil drains back to
the oil pan under the No. 1 main bearing cap.
The oil supply for the rocker arms and bridged
pivot assemblies is provided by the hydraulic valve
tappets, which pass oil through hollow push rods to a
hole in the corresponding rocker arm. Oil from the
rocker arm lubricates the valve train components.
The oil then passes down through the push rod guide
holes and the oil drain-back passages in the cylinder
head, past the valve tappet area, and then returns to
the oil pan.
Fig. 1 Firing Order
Fig. 2 Engine Identification Number
Fig. 3 Positive Displacement Oil PumpÐTypical
1 ± INNER ROTOR AND SHAFT
2 ± BODY
3 ± DISTRIBUTOR DRIVESHAFT (REFERENCE)
4 ± COTTER PIN
5 ± RETAINER CAP
6 ± SPRING
7 ± RELIEF VALVE
8 ± LARGE CHAMFERED EDGE
9 ± BOLT
10 ± COVER
11 ± OUTER ROTOR
DN5.2L ENGINE 9 - 87
DESCRIPTION AND OPERATION (Continued)

Downloaded from www.Manualslib.com manuals search engine INSTALLATION
Only one main bearing should be selectively fitted
while all other main bearing caps are properly tight-
ened. All bearing capbolts removed during service pro-
cedures are to be cleaned and oiled before installation.
When installing a new upper bearing shell, slightly
chamfer the sharp edges from the plain side.
(1) Start bearing in place, and insert Crankshaft
Main Bearing Remover/Installer Tool C-3059 into oil
hole of crankshaft (Fig. 58).
(2) Slowly rotate crankshaft counterclockwise slid-
ing the bearing into position. Remove Tool C-3059.
(3)
Install the bearing caps. Clean and oil the bolts.
Tighten the capbolts to 115 N´m (85 ft. lbs.) torque.
(4) Install the oil pump.
(5) Install the oil pan.
(6) Start engine check for leaks.
DISTRIBUTOR DRIVE SHAFT BUSHING
REMOVAL
(1) Remove distributor, refer to Group 8D, Ignition
Systems for the proper procedure.
(2) Remove the intake manifold. Refer to Intake
Manifold in this section for correct procedure.
(3) Insert Distributor Drive Shaft Bushing Puller
Tool C-3052 into old bushing and thread down until a
tight fit is obtained (Fig. 59).
(4) Hold puller screw and tighten puller nut until
bushing is removed.
INSTALLATION
(1) Slide new bushing over burnishing end of Dis-
tributor Drive Shaft Bushing Driver/Burnisher Tool
C-3053. Insert the tool and bushing into the bore.
(2) Drive bushing and tool into position, using a
hammer (Fig. 60).
(3) As the burnisher is pulled through the bushing,
the bushing is expanded tight in the block and bur-
nished to correct size (Fig. 61).DO NOT ream this
bushing.CAUTION: This procedure MUST be followed when
installing a new bushing or seizure to shaft may
occur.
(4) Install the intake manifold.
DISTRIBUTOR INSTALLATION
NOTE: Before installing the distributor, the oil
pump drive shaft must be aligned to number one
cylinder.
(1) Rotate crankshaft until No.1 cylinder is at top
dead center on the firing stroke.
(2) When in this position, the timing mark of
vibration damper should be under ª0º on the timing
indicator.
(3) Install the shaft so that after the gear spirals
into place, it will index with the oil pump shaft. The
slot on top of oil pump shaft should be aligned
towards the left front intake manifold attaching bolt
hole (Fig. 62).
(4) Install distributor, refer to Group 8D, Ignition
Systems for the proper procedure.
Fig. 59 Distributor Driveshaft Bushing Removal
1 ± SPECIAL TOOL C-3052
2 ± BUSHING
Fig. 60 Distributor Driveshaft Bushing Installation
1 ± SPECIAL TOOL C-3053
2 ± BUSHING
Fig. 61 Burnishing Distributor Driveshaft Bushing
1 ± SPECIAL TOOL C-3053
2 ± BUSHING
9 - 114 5.2L ENGINEDN
REMOVAL AND INSTALLATION (Continued)

Downloaded from www.Manualslib.com manuals search engine INSTALLATION
(1) Clean Gasket Maker residue and sealant from
the cylinder block and rear cap mating surface. Do
this before applying the MopartGasket Maker and
the installation of rear cap.
(2) Lightly oil the new upper seal lips with engine
oil.
(3) Install the new upper rear bearing oil seal with
the white paint facing towards the rear of the engine.
(4) Position the crankshaft into the cylinder block.
(5) Lightly oil the new lower seal lips with engine
oil.
(6) Install the new lower rear bearing oil seal into
the bearing cap with the white paint facing towards
the rear of the engine.
(7) Apply 5 mm (0.20 in) drop of MopartGasket
Maker, or equivalent, on each side of the rear main
bearing cap (Fig. 66). DO NOT over apply sealant or
allow the sealant to contact the rubber seal. Assem-
ble bearing cap to cylinder block immediately after
sealant application.
(8) To align the bearing cap, use cap slot, align-
ment dowel and cap bolts. DO NOT remove excess
material after assembly. DO NOT strike rear cap
more than 2 times for proper engagement.
(9) Clean and oil all cap bolts. Install all main
bearing caps. Install all cap bolts and alternately
tighten to 115 N´m (85 ft. lbs.) torque.
(10) Install oil pump.
(11) Install the timing chain cover.
(12) Install the vibration damper.
(13) Position the connecting rods onto the crank-
shaft and install the rod bearing caps. Tighten the
nuts to 61 N´m (45 ft. lbs.).
(14) Apply MopartSilicone Rubber Adhesive Seal-
ant, or equivalent, at bearing cap to block joint to
provide cap to block and oil pan sealing (Fig. 67).Apply enough sealant until a small amount is
squeezed out. Withdraw nozzle and wipe excess seal-
ant off the oil pan seal groove.
(15) Install new front crankshaft oil seal.
(16) Immediately install the oil pan.
(17) If the transmission was removed, install the
transmission.
OIL PUMP
REMOVAL
(1) Remove the oil pan.
(2) Remove the oil pump from rear main bearing
cap.
INSTALLATION
(1) Install oil pump. During installation slowly
rotate pump body to ensure driveshaft-to-pump rotor
shaft engagement.
(2) Hold the oil pump base flush against mating
surface on No.5 main bearing cap. Finger tighten
pump attaching bolts. Tighten attaching bolts to 41
N´m (30 ft. lbs.) torque.
(3) Install the oil pan.
CRANKSHAFT OIL SEALÐFRONT
The oil seal can be replaced without removing the
timing chain cover provided the cover is not mis-
aligned.
(1) Disconnect the negative cable from the battery.
(2) Remove vibration damper.
(3) If front seal is suspected of leaking, check front
oil seal alignment to crankshaft. The seal installa-
tion/alignment tool 6635, should fit with minimum
Fig. 66 Sealant Application to Bearing Cap
1 ± .25 DROP OF LOCTITE 515 ON BOTH SIDES OF REAR
MAIN CAP
Fig. 67 Apply Sealant to Bearing Cap to Block Joint
1 ± MOPAR SILICONE RUBBER ADHESIVE SEALANT NOZZLE
TIP
2 ± SEALANT APPLIED
3 ± CYLINDER BLOCK
4 ± REAR MAIN BEARING CAP
DN5.2L ENGINE 9 - 117
REMOVAL AND INSTALLATION (Continued)

Downloaded from www.Manualslib.com manuals search engine CYLINDER BLOCK
DISASSEMBLE
With Engine removed from vehicle:
(1) Remove the cylinder heads. refer to Cylinder
Head in this section for correct procedure.
(2) Remove the exhaust manifolds. Refer to
Exhaust Manifolds in this section.
(3) Remove the oil pan. Refer to Oil Pan in this
section.
(4) Remove the piston and connecting rod assem-
blies. Refer to Piston and Connecting Rod in this sec-
tion.
(5) Remove the crankshaft. Refer to Crankshaft in
this section.
(6) Remove the core plugs.
ASSEMBLE
(1) Install the core plugs.
(2) Install the crankshaft.
(3) Install the piston and connecting rods.
(4) Install the oil pan.
(5) Install the cylinder heads.
(6) Install the exhaust manifolds.
(7) Install the intake manifold.
(8) Install the engine into the vehicle.
CLEANING AND INSPECTION
CYLINDER HEAD COVER
CLEANING
Clean cylinder head cover gasket surface.
Clean head rail, if necessary.
INSPECTION
Inspect cover for distortion and straighten, if nec-
essary.
Check the gasket for use in head cover installation.
If damaged, use a new gasket.
CYLINDER HEAD ASSEMBLY
CLEANING
Clean all surfaces of cylinder block and cylinder
heads.
Clean cylinder block front and rear gasket surfaces
using a suitable solvent.
INSPECTION
Inspect all surfaces with a straightedge if there is
any reason to suspect leakage. If out-of-flatness
exceeds 0.00075 mm/mm (0.00075 inch/inch) times
the span length in inches in any direction, either
replace head or lightly machine the head surface.
FOR EXAMPLE:A 305 mm (12 inch) span is
0.102 mm (0.004 inch) out-of-flat. The allowable out-
of-flat is 305 X 0.00075 (12 X 0.00075) equals 0.23
mm (0.009 inch). This amount of out-of-flat is accept-
able.
The cylinder head surface finish should be
1.78-3.00 microns (70-125 microinches).
PISTON AND CONNECTING ROD ASSEMBLY
INSPECTION
Check the crankshaft connecting rod journal for
excessive wear, taper and scoring.
Check the cylinder block bore for out-of-round,
taper, scoring and scuffing.
Check the pistons for taper and elliptical shape
before they are fitted into the cylinder bore (Fig. 83).
OIL PAN
CLEANING
Clean the block and pan gasket surfaces.
Trim or remove excess sealant film in the rear
main cap oil pan gasket groove.DO NOT remove
the sealant inside the rear main cap slots.
If present, trim excess sealant from inside the
engine.
Fig. 82 Oil Pump
1 ± INNER ROTOR AND SHAFT
2 ± BODY
3 ± DISTRIBUTOR DRIVESHAFT (REFERENCE)
4 ± COTTER PIN
5 ± RETAINER CAP
6 ± SPRING
7 ± RELIEF VALVE
8 ± LARGE CHAMFERED EDGE
9 ± BOLT
10 ± COVER
11 ± OUTER ROTOR
9 - 124 5.2L ENGINEDN
DISASSEMBLY AND ASSEMBLY (Continued)

Downloaded from www.Manualslib.com manuals search engine DESCRIPTION AND OPERATION
ENGINE
DESCRIPTION
The 5.9 Liter (360 CID) eight-cylinder engine is a
V-Type lightweight, single cam, overhead valve
engine with hydraulic roller tappets. This engine is
designed for unleaded fuel.
The engine lubrication system consists of a rotor
type oil pump and a full flow oil filter.
The cylinders are numbered from front to rear; 1,
3, 5, 7 on the left bank and 2, 4, 6, 8 on the right
bank. The firing order is 1-8-4-3-6-5-7-2 (Fig. 1).
The engine serial number is stamped into a
machined pad located on the left, front corner of the
cylinder block. When component part replacement is
necessary, use the engine type and serial number for
reference (Fig. 2).
ENGINE LUBRICATION SYSTEM
DESCRIPTION
A gear-type positive displacement pump (Fig. 3) is
mounted at the underside of the rear main bearing
cap. The pump uses a pick-up tube and screen
assembly to gather engine oil from the oil pan.
OPERATION
The pump draws oil through the screen and inlet
tube from the sump at the rear of the oil pan. The oil
is driven between the drive and idler gears and
pump body, then forced through the outlet to the
block. An oil gallery in the block channels the oil to
the inlet side of the full flow oil filter. After passing
through the filter element, the oil passes from the
center outlet of the filter through an oil gallery that
channels the oil up to the main gallery, which
extends the entire length on the right side of the
block. The oil then goes down to the No. 1 main bear-
ing, back up to the left side of the block, and into the
oil gallery on the left side of the engine.
Galleries extend downward from the main oil gal-
lery to the upper shell of each main bearing. The
crankshaft is drilled internally to pass oil from the
main bearing journals to the connecting rod journals.
Each connecting rod bearing has half a hole in it, oil
passes through the hole when the rods rotate and the
hole lines up, oil is then thrown off as the rod
rotates. This oil throwoff lubricates the camshaft
lobes, distributor drive gear, cylinder walls, and pis-
ton pins.
Fig. 1 Firing Order
Fig. 2 Engine Identification Number
Fig. 3 Positive Displacement Oil PumpÐTypical
1 ± INNER ROTOR AND SHAFT
2 ± BODY
3 ± DISTRIBUTOR DRIVESHAFT (REFERENCE)
4 ± COTTER PIN
5 ± RETAINER CAP
6 ± SPRING
7 ± RELIEF VALVE
8 ± LARGE CHAMFERED EDGE
9 ± BOLT
10 ± COVER
11 ± OUTER ROTOR
9 - 136 5.9L ENGINEDN

Downloaded from www.Manualslib.com manuals search engine (4) Hold puller screw and tighten puller nut until
bushing is removed.
INSTALLATION
(1) Slide new bushing over burnishing end of Dis-
tributor Drive Shaft Bushing Driver/Burnisher Tool
C-3053. Insert the tool and bushing into the bore.
(2) Drive bushing and tool into position, using a
hammer (Fig. 64).
(3) As the burnisher is pulled through the bushing,
the bushing is expanded tight in the block and bur-
nished to correct size (Fig. 65).DO NOT ream this
bushing.
CAUTION: This procedure MUST be followed when
installing a new bushing or seizure to shaft may
occur.
(4) Install the intake manifold.
DISTRIBUTOR INSTALLATION
NOTE: Before installing the distributor, the oil
pump drive shaft must be aligned to number one
cylinder.(1) Rotate crankshaft until No.1 cylinder is at top
dead center on the firing stroke.
(2) When in this position, the timing mark of
vibration damper should be under ª0º on the timing
indicator.
(3) Install the shaft so that after the gear spirals
into place, it will index with the oil pump shaft. The
slot on top of oil pump shaft should be aligned
towards the left front intake manifold attaching bolt
hole (Fig. 66).
(4) Install distributor, refer to Group 8D, Ignition
Systems for the proper procedure.
After the distributor has been installed, its rota-
tional position must be set using theSET SYNC
mode of the DRB scan tool. Refer to Checking Dis-
tributor Position following the Distributor Installa-
tion section in Group 8D, Ignition system.
Do not attempt to adjust ignition timing by
rotating the distributor. It has no effect on igni-
tion timing. Adjusting distributor position will
effect fuel synchronization only.
Fig. 63 Distributor Driveshaft Bushing Removal
1 ± SPECIAL TOOL C-3052
2 ± BUSHING
Fig. 64 Distributor Driveshaft Bushing Installation
1 ± SPECIAL TOOL C-3053
2 ± BUSHING
Fig. 65 Burnishing Distributor Driveshaft Bushing
1 ± SPECIAL TOOL C-3053
2 ± BUSHING
Fig. 66 Position of Oil Pump Shaft Slot
1 ± DISTRIBUTOR DRIVE
DN5.9L ENGINE 9 - 173
REMOVAL AND INSTALLATION (Continued)

Downloaded from www.Manualslib.com manuals search engine (7) Remove and discard the crankshaft rear oil
seals.
(8) Remove and discard the front crankshaft oil
seal.
INSPECTION OF JOURNALS
The crankshaft connecting rod and main journals
should be checked for excessive wear, taper and scor-
ing. The maximum taper or out-of-round on any
crankshaft journal is 0.025 mm (0.001 inch).
Journal grinding should not exceed 0.305 mm
(0.012 inch) under the standard journal diameter. DO
NOT grind thrust faces of No.3 main bearing. DO
NOT nick crank pin or bearing fillets. After grinding,
remove rough edges from crankshaft oil holes and
clean out all oil passages.
CAUTION: After any journal grind, it is important
that the final paper or cloth polish be in the same
direction as the engine rotates.
CLEANING
Clean Loctite 518 residue and sealant from the cyl-
inder block and rear cap mating surface. Do this
before applying the Loctite drop and the installation
of rear cap.
INSTALLATION
(1) Lightly oil the new upper seal lips with engine
oil.
(2) Install the new upper rear bearing oil seal with
the white paint facing towards the rear of the engine.
(3) Position the crankshaft into the cylinder block.
(4) Lightly oil the new lower seal lips with engine
oil.
(5) Install the new lower rear bearing oil seal into
the bearing cap with the white paint facing towards
the rear of the engine.
(6) Apply 5 mm (0.20 in) drop of Loctite 518, or
equivalent, on each side of the rear main bearing cap
(Fig. 72). DO NOT over apply sealant or allow the
sealant to contact the rubber seal. Assemble bearing
cap to cylinder block immediately after sealant appli-
cation.
(7) To align the bearing cap, use cap slot, align-
ment dowel and cap bolts. DO NOT remove excess
material after assembly. DO NOT strike rear cap
more than 2 times for proper engagement.
(8) Clean and oil all cap bolts. Install all main
bearing caps. Install all cap bolts and alternately
tighten to 115 N´m (85 ft. lbs.) torque.
(9) Install oil pump.
Apply MopartSilicone Rubber Adhesive Sealant,
or equivalent, at bearing cap to block joint to provide
cap to block and oil pan sealing (Fig. 73). Apply
enough sealant until a small amount is squeezed out.Withdraw nozzle and wipe excess sealant off the oil
pan seal groove.
(10) Install new front crankshaft oil seal.
(11) Immediately install the oil pan.
OIL PUMP
REMOVAL
(1) Remove the oil pan.
(2) Remove the oil pump from rear main bearing
cap.
INSTALLATION
(1) Install oil pump. During installation slowly
rotate pump body to ensure driveshaft-to-pump rotor
shaft engagement.
Fig. 72 Sealant Application to Bearing Cap
1 ± .25 DROP OF LOCTITE 515 ON BOTH SIDES OF REAR
MAIN CAP
Fig. 73 Apply Sealant to Bearing Cap to Block Joint
1 ± MOPAR SILICONE RUBBER ADHESIVE SEALANT NOZZLE
TIP
2 ± SEALANT APPLIED
3 ± CYLINDER BLOCK
4 ± REAR MAIN BEARING CAP
DN5.9L ENGINE 9 - 177
REMOVAL AND INSTALLATION (Continued)