Dodge ram truck 3500 1996 Service Manual page 1130

I - 140 8 J L E l i S l E
R E M O V A L AMB I N S T A L L A T I O N fContinued)
FITS INTO TOOL MD 998772A
FITS INTO CYLINDER HEAD
J9409-95
Fig. 25 Special Studs 6715 for ¥-10 Engine
Fig. 26 Vaive Spring Compressor MD-998772A with
Adaptor 6716-A and Screw 6765
valve guides. Identify valves to ensure Installation in
original location.
INSTALLATION
(1) Clean valves thoroughly. Discard burned,
warped and cracked valves.
(2) Remove carbon and varnish deposits from
inside of valve guides with a reliable guide cleaner.
(3) Measure valve stems for wear. I f wear exceeds
0.051 mm (0.002 inch), replace the valve.
(4) Make sure there are no burrs on valve stems.
(5) Coat valve stems with lubrication oil. Insert
valves into valve guides in cylinder head.
(6) Install new seals on all valve guides (BLACK
on intake and BROWN on exhaust). Install valve
springs and valve retainers.
(7) Compress valve springs with Valve Spring
Compressor Tool MD-998772A and adapter 6716A,
install locks and release tool. Tap the retainer with a
brass or heavy plastic hammer to ensure locks have
been seated.
(8) I f valves and/or seats were ground, measure
the installed height of springs. Make sure the mea­
surement Is taken from bottom of spring seat in cyl­
inder head to the bottom surface of spring retainer. I f
spacers are installed, measure from the top of spacer.
I f height is greater than 42.86 mm (1-11/16 inches),
install a 1.587 mm (1/16 inch) spacer in head coun-
terbore. Ensure this brings spring height back to nor­
mal, 41.27 to 42.86 mm (1-5/8 to 1-11/16 inch).
HYDRAULIC TAPPETS
REMOVAL
(1) Disconnect the negative cable from the battery.
(2) Remove the air cleaner.
(3) Remove cylinder head cover.
(4) Remove rocker arm assembly and push rods.
Identify push rods to ensure installation in original
location.
(5) Remove upper and lower intake manifold.
(6) Cut the cylinder head gasket for accessibility i f
the end tappets are to be removed.
(7) Remove yoke retainer spider and tappet align­
ing yokes (Fig. 27).
Fig, 27 Tappets, Aligning Yoke and Yoke Retaining
Spider