Dodge RAM TRUCK 1500 1995 Service Manual page 903

Fig. S Measuring Waiwe Guide Wear
Mmwmf 0 / S
Welwe Gmi® Size
0.076 m m
8.026 - 8.052 mm
(0.003 In.)
(0.316-0.317 in.}
0.381
mm 8.331-8.357 mm
(0.0151a)
(0.328-0.329 in.)
J9309-30
Fig. 7 Reamer Sims
REFACING WAIVES AND WAIVE SEATS
The intake and exhaust valves have a 48-1/4° to
43-8/4° face angle and a 44-1/4° to 44-3/4° seat angle
(Fig. 8).
W A L W E S
Inspect the remaining margin after the valves are
refaced (Fig. 9). Valves with less than 1.190 mm
(0.047 Inch) margin should be discarded.
VALVE SEATS
CAUTlONs DO NOT uti-shrouel waives during waiwe
seat refacing (Fig. 10).
(1) When refacing valve seats, it is important that
the correct size valve guide pilot be used for reseat­
ing stones. A true and complete surface must be ob­
tained.
(2) Measure the concentricity of valve seat using a
dial Indicator. Total runout should not exceed 0.051
mm (0.002 inch) total indicator reading.
(8) Inspect the valve seat with Prussian blue to de­
termine where the valve contacts the seat. To do this,
coat valve seat LIGHTLY with Prussian blue then set
valve In place. Rotate the valve with light pressure.
If the blue Is transferred to the center of valve face,
A - SEAT WIDTH - INTAKE 1.016-1.524 mm (0.040 - 0.060 In.]
EXHAUST 1.524 - 2.032 mm (0.060 - 0.080 in.)
B - FACE ANGLE (INTAKE & EXHAUST) 4374° - 43V.°
C - SEAT ANGLE (INTAKE & EXHAUST) mh - 44 3 //
D - CONTACT SURFACE
J9309-95
Fig, 8 Value Face and Seat Angles
iNXAKI
¥AL¥i
EXHAUST
V A L V E
V A L V E
SPRING
RETAINER LOCK
GROOVE
J 9 2 0 9 - 1 2 7
Fig. 3 Intake and Exhaust Valves
contact Is satisfactory. If the blue is transferred-to
the top edge of valve face, lower valve seat with a 15°
stone. If the blue is transferred to bottom edge of
valve face raise valve seat with a 80° stone.
(4) When seat Is properly positioned the width of
intake seats should be 1.016-1.524 mm (0.040-0.060
Inch). The width of the exhaust seats should be
1.524-2.032 mm (0.060-0.080 inch).
WALWE
SPRING IN8PE&FION
Whenever valves have been removed for Inspection,
reconditioning or replacement, valve springs should
be tested. As an example the compression length of
the spring to be tested is 1-5/16 Inch. Turn table of
Universals Valve Spring Tester Tool until surface is