Jeep UNIVERSAL CJ-2A - Page 31

D
L4-134 ENGINE
D-8. Remove Manifolds
On models so equipped, remove the crankcase
ventilator tube which extends from the ventilator
valve mounted in the intake manifold to an elbow
mounted on the valve cover plate. Remove the
seven nuts from the manifold-to-cylinder-block
studs. Pull the intake and exhaust manifolds as an
assembly off the studs. Remove the manifold-to-
block gasket.
D-9. Remove Oil Filler Tube
Loop a piece of wire several times around the tube
below the top and make a loop through which a
pry bar may be used to pry over the top of the
engine. Pull the tube, tapping it just above the
crankcase opening.
D-10. Remove Water Outlet Fitting
Remove the bolts and lockwashers that attach the
water outlet fitting to the cylinder head. Lift the
outlet fitting and thermostat from the cylinder
head.
D-11. Remove Crankshaft Pulley
Remove the crankshaft nut. Install a puller and
pull the pulley from the crankshaft.
D-12. Remove Oil Pump
The oil pump is located externally on the left side
of the engine. If the oil pump is to be removed with
the engine in the vehicle, set No. 1 piston at TDC
for reference for reinstalling the oil pump without
greatly disturbing the ignition timing. Then remove
the distributor cover and note the position of the
rotor. If the distributor has already been removed,
sight through the distributor hole before removing
the oil pump. The slot should be near vertical.
Remove the capscrews and lockwashers attaching
the oil pump to the cylinder block. Carefully slide
the oil pump and its drive shaft out of the cylinder
block.
D-13. Remove Crankcase Ventilator Valve
On vehicles so equipped, remove the capscrew and
ventilator body gasket securing the crankcase vent
body and related parts to the exhaust valve spring
compartment cover and to the cylinder block. Re-
move the crankcase vent body and the engine
ventilating system parts threaded to it. Remove
the valve cover plate screws and the valve cover
plate.
D-14. Remove Cylinder Head
Remove the spark plugs. Remove the cylinder head
nuts and the temperature sending unit, then lift
the head from the block. Removal is· made easy· by
using lifting hooks screwed into No. 1 and No. 4
spark plug holes. Remove and discard the cylinder
head gasket.
CAUTION: Do not use a screw driver, chisel, or
other sharp instrument to drive between the cyl-
inder head and block to break the head loose from
the gasket.
30
FIG. 32-REMOVING RIDGE WITH REAMER
D-15. Ream Cylinder Bore Ridges
To prevent breaking the piston lands, the ridge at
the top of each cylinder bore must be removed. To
remove this ridge, use a cylinder ridge reamer, fol-
lowing
the instructions furnished by the reamer
manufacturer. Use care not t:> cut below the top
of the upper ring travel in the bore. Keep each
piston top covered with an oil-soaked cloth to pre-
vent cuttings from falling into the cylinder.
NOTE: This operation should be performed at this
time before the engine is rotated for the sequence
steps following.
D-16. Remove Oil Pan
Rotate the engine to the upside down position.
Remove the screws and lockwashers that attach
the oil pan to the cylinder block.
Remove the oil pan and gasket. Discard the gasket.
D-17. Remove Piston and Connecting
Rod Assemblies
Remove the stamped locking nuts from the lower
end of each connecting rod bearing bolt. Remove
the connecting rod nuts. Remove the bearing cap
evenly. Push the connecting rod and piston as-
sembly out of the- cylinder block with the handle
end of a hammer until the piston rings are free from
the cylinder bore. Remove the piston and connect-
ing rod assembly from the top of the cylinder
block. Reassemble the connecting rod bearing cap
with the bearings in place in the rod from which it
was removed. Rotate the crankshaft and follow
the same procedure until all the piston and con-
necting rod assemblies are removed.