Chrysler 1991 Service Manual Supplement page 82

• 5JL (DIESEL) ENGINES
9 - 19
Fig. 11 Cylinder Head/Gasket Alignment
(5) Use clean engine oil to lubricate the cylinder
head bolt threads and under the bolt heads.
(6) The cylinder head bolts are 3 different sizes. In-
stall the bolts in the proper hole. Tighten the bolts as
follows:
• Step 1—Tighten all bolts, in sequence (Fig. 12), to
90 N-m (88 ft. lbs.) torque. Check the torque. If lower
than 90 N-m (66 ft. lbs.), tighten to this torque.
• Step 2—Tighten all 12 mm bolts, in sequence (Fig.
12), to 120 N-m (89 ft. lbs.) torque. Check the torque.
If lower than 120 N-m (89 ft. lbs.), tighten to this
torque.
• Step 3—Tighten all bolts, in sequence (Fig. 12), an
additional 90°.
J9109-36
Fig. 12 Cylinder Head Tightening Sequence
(7) Be sure to lubricate the push rod sockets with
clean engine oil.
(8) Install the rocker lever pedestal bolts and
tighten to 24 N-m (18 ft. lbs.) torque.
(9) Adjust the valve clearance.
(10) Install the valve covers. Tighten the bolts to
24 N-m (18 ft. lbs.) torque.
(11) Install the injector nozzles and fuel lines (refer
to Group 14, Fuel System).
(12) Install the fuel filter (refer to Group 14, Fuel
System for the proper procedures).
(13) Install the exhaust manifold (refer to Group
11, Exhaust System and Intake Manifold).
(14) Install the turbocharger.
(15) Connect the radiator and heater hoses.
(16) Fill the engine with new coolant or the clean
drained coolant (refer to Group 7, Cooling System for
the proper procedure).
(17) Fill the engine with clean lubricating oil (refer
to Group 0, Lubrication and Maintenance).
PISTON/CONNECTING ROD ISSEilLY
The turbocharged intercooler piston has a N i - R e s i s t
insert with a keystone profile for the top compression
ring. The new piston has a new design bowl and a 7
mm longer piston pin. The 1991V2 pistons can not be
interchanged with earlier models.
PISTON COOLING NOZZLES
The piston cooling nozzles (Fig. 13) on the 1991V2
engine are a new design with increased flow c a p a b i l -
ities. The 1991V2 piston cooling nozzles can not be i n -
terchanged with earlier models.
Fig. 13 Piston Cooling Nozzles
OIL PU1P
The 1991V2 oil pump can be used on earlier model
engines. However, earlier oil pumps can not be used
on 1991V2 engines.
OIL PRESSURE REGULATOR VALVE/SPRING
When oil pressure from the oil pump exceeds 448
kPa (65 psi), the regulator valve opens to allow oil to
drain back into the pan.
OIL COOLER ELE1ENT/G1SKET
The 1991V2 filter head/cooler assembly can be i n -
terchanged with earlier models. However, earlier
model filter head/coolers can not be used on 1991V2
engines.