Dodge ram truck 3500 1996 Service Manual page 1179

B R
5
JL
(DIESEL)
ENIiNE I
- 189
R E i O W L MiB INSTALLATION fContinued)
CAMSHAFT
R E M O V A L
(1) Remove the following parts:
• Valve covers
© Rocker lever assemblies
@ Push rods
© Drive belt
• Fan hub assembly
• Vibration damper
© Gear housing cover
© Lift pump
(2) Insert the dowels through the push tube holes
and Into the top of each tappet. When properly
installed, the dowels can be used to pull the tappets
up (Fig. 69).
(3) Pull the tappets up and wrap a rubber band
around the top of the dowel rods (Fig. 69). This will
prevent the tappets from dropping down.
DOWEL TOOL
Fig. 69 Holding Tappets in Place
(4) Rotate the crankshaft to align the crankshaft
to camshaft timing marks. (Fig. 70)
J 9 1 0 9 - 5 1
Fig. 70 Align Crankshaft to Camshaft
(5) Remove the bolts from the thrust plate (Fig. 71).
(6) Remove the camshaft, gear and thrust plate.
Fig. 71 Thrust Plate Bolt Location
BUSHING REPLACEMENT
(1) Measure the diameter of each bore. (The limit
for the bushing in the No.l bore is the same as for
the other bores without bushings). The limit of the
inside diameter is 54.133 mm (2.1312 inch). I f the
camshaft bore for the first cam bushing is worn
beyond the limit, install a new service bushing.
Inspect the rest of the camshaft bores for damage or
excessive wear.
(2) I f the bores without a bushing are worn beyond
the limit, the engine must be removed for machining
and installation of service bushings, i f badly worn,
replace the cylinder block. *
(3) Remove the bushing from the No.l bore, using
a universal cam bushing tool.
(4) Mark the cylinder block so you can align the oil
hole in the cylinder block with the oil hole in the bush­
ing.
Apply a coating of loctite® 6 0 9 to the backside of the
new bushing. Avoid getting loctite® in the oil hole.
(5) Use a universal cam bushing installation tool
and Install the bushing so that i t is even with the
front face of the cylinder block. The oil hole must be
aligned. A 3.2 mm (0.128 inch) diameter rod must be
able to pass through the hole (Fig. 72).
(6) Measure the installed bushing. The limit of the
inside diameter is 54.133 mm (2.1312 inch).
Fig. 72 Oii Hole Alignment