Dodge D150 1990 Service Manual page 631

9 - 44 5.2L/5.9L ENGINE
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(16) I n s t a l l t h e twelve a t t a c h i n g bolts Finger
T i g h t . T i g h t e n the bolts t o 34 N-m (25 ft. lbs.) torque
i n the t i g h t e n i n g sequence shown i n (Fig. 7). T i g h t e n
the same bolts to 54 N - m (40 f t . lbs.) i n sequence
shown (Fig. 7). Check t h a t a l l bolts are a t 5 4 N - m
(40 f t . lbs.) torque.
Fig. 7 Intake Manifold Screw Tightening Sequence
(17) I n s t a l l exhaust manifolds a n d t i g h t e n bolts to
27 N-m (20 ft. lbs.) torque and t i g h t e n the n u t s t o 20
N n n (15 f t . lbs.) torque.
(18) A d j u s t spark plugs t o specifications (see Group
8D, I g n i t i o n System). I n s t a l l the plugs and t i g h t e n to
4 1 N-m (30 ft. lbs.) torque.
(19) I n s t a l l coil wires, heat indicator sending u n i t
w i r e , heater hoses and bypass hose.
(20) I n s t a l l vacuum control hose to t h e t h r o t t l e
body.
(21) I n s t a l l t h r o t t l e linkage a n d adjust, as neces-
sary.
(22) I n s t a l l d i s t r i b u t o r cap and wires.
(23) I n s t a l l fuel lines, a l t e r n a t o r a n d drive belt.
T i g h t e n alternator m o u n t i n g bolt t o 4 1 N n n (30 f t .
lbs.) torque and adjusting strap bolt t o 23 N - m (200
i n . lbs.) torque (see Group 7, Cooling Section o n ad-
j u s t i n g belt tension).
(24) Place new cylinder head cover gaskets i n posi-
t i o n and i n s t a l l cylinder head covers. T i g h t e n t o 11
N-m (95 i n . lbs.) torque using load spreader fasten-
ers.
(25) I n s t a l l closed crankcase v e n t i l a t i o n system and
evaporation control system.
(26) F i l l cooling system.
(27) I n s t a l l battery ground cable.
VALVES AND VALVE SPRINGS
The valves are arranged i n l i n e i n t h e cylinder
heads and inclined 18 degrees. T h e rocker shaft sup-
port and t h e valve guides are cast i n t e g r a l w i t h the
heads.
REMOVAL
(1) W i t h cylinder head removed, compress valve
springs u s i n g Tool C-3422-A (Fig. 8).
(2) Remove valve r e t a i n i n g locks, valve spring re-
tainers, valve stem cup seals and valve springs.
(3) Before r e m o v i n g valves, remove any b u r r s from
valve stem lock grooves t o prevent damage t o t h e
valve guides. Identify valves t o insure i n s t a l l a t i o n i n
o r i g i n a l location.
Fig. 8 Compressing Valve Springs with Tool C-
3422A
VALVE INSPECTION
Clean valves t h o r o u g h l y a n d discard burned,
warped and cracked valves.
Measure valve stems for wear. N e w stem diameters
should measure (Fig. 9):
Intake
. . . 9.449 to 9.474 mm
(0.372 to 0.373 inch)
Exhaust
. . 9.423 to 9.449 mm
(0.371 to 0.372 inch)
If wear exceeds 0.051 mm
(0.002 inch), replace valve
J9009-109
Fig. 9 Valve Stem Diameters
Remove carbon and v a r n i s h deposits from inside of
valve guides w i t h a reliable guide cleaner.
Measure valve stem guide clearance as follows:
(a) I n s t a l l sleeve Tool C-3973 over valve stem
(Fig. 10) a n d i n s t a l l valve. The special sleeve
places the valve a t the correct h e i g h t for checking
w i t h a d i a l indicator.
(b) A t t a c h d i a l indicator Tool C-3339 to cylin-
der head and set i t a t r i g h t angle of valve stem be-
ing measured (Fig. 11).