Valves And Seats; Valve Guide Bares; Cylinder Head Disassembly; Cylinder Head Tightening Sequence - Jeep J-10 Series 1982 Technical & Service Manual

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(7) Disconnect fuel pipe from carburetor. Move pipe
over and align with opening in intake manifold to facil
itate cylinder head removal.
(8) Remove rear heater hose and upper radiator
hose.
(9) Remove power steering pump and bracket
assembly.
NOTE: Do not disconnect power steering hoses from
pump or gear.
(10) Remove dipstick.
(11) Remove rocker arm assemblies and push rods.
NOTE: Note location ofrockerarms tofacilitate instal
lation i« their original locations.
CAUTION; To prevent slipping, use a 12 mm 12-point
socket wrench to ensure a tight fit on the bolt heads.
(12) Remove cylinder head bolts.
(13) Remove cylinder head by inserting pry bar into
alternator bracket and prying upward.
iMtatlatiofl
The gasket mating surfaces on both the head and the
block must be smooth and clean, i.e., no foreign matter,
nicks or heavy scratches. The cylinder head bolt threads
in the block and on the cylinder head bolts must also be
clean, if not, bolt tightening torque will be inaccurate.
(1) Place replacement cylinder head gasket in posi
tion over dowel pins and flat on cylinder block.
(2) Carefully guide cylinder head into place over
dowel pins and gasket.
(3) Coat underside of heads and threads of cylinder
head bolts with sealing compound and install finger-
tight.
CAUTION: To prevent slipping, use a 12 mm 12-point
socket wrench to ensure a tight fit on the bolt heads.
(4) Tighten cylinder head bolts in steps following
sequence depicted in figure 1B-26. The final torque is 92
foot-pounds (125 N«m).
(5) Install push rods, rocker arm assemblies and
cylinder head cover. Tighten rocker arm capscrews with
20 foot-pounds (27 N*m) torque. Refer to Cylinder Head
Cover for procedure.
90888
Ftf.lB-26 Cylinder Heed Ttf*te*|
ENGINES 1B-15
(6) Install power steering pump and bracket.
(7) If removed, install air pump, bracket and spa
cers. Ensure spacers are installed in correct positions.
Tighten belt to specified tension. Refer to Chapter
1C—Cooling Systems for procedure.
(8) Connect fuel pipe to carburetor.
(9) Install heater hose and upper radiator hose,
tighten clamps.
(10) Connect vacuum hoses.
(11) Connect exhaust pipe to manifold. Tighten nuts
with 35 foot-pounds (47 N*m) torque.
(12) Refill cooling system with coolant.
(13) Install dipstick.
(14) Connect battery negative cable.
WARNING: Use extreme caution when engine is oper
ating. Do not stand in direct line with fan. Do not put
hands near pulleys, belts or fan. Do not wear loose
clothing.
(15) Start engine and inspect for leaks.
V4ra art Setts
Reconditioning of valves and valve seats is very im
portant because the seating of the valves must be precise
for the engine to produce specified power and provide
reliable performance.
Another important factor is the cooling of the valve
heads. Close contact between each valve and its seat is
imperative to ensure that the heat in the valve head will
be properly transferred to the cylinder head.
Several different types of equipment are available for
refacing valves and valve seats. The instructions pro
vided by the manufacturer of the equipment being used
should be carefully followed to attain proper results.
Regardless of the type of equipment used it is essen
tial that valve bores be free from carbon and other
foreign matter to ensure correct centering of the pilot in
the guide.
Valve Gitb Bom
Valves with oversize stems are available for both in
take and exhaust valves. Guides should be reamed and
replacement oversize valves installed whenever clear
ances exceed specifications.
GfllBitr Httd DtsasstaMf
(1) With cylinder head removed, remove rocker arm
capscrews, pivot balls and rocker arms. Install
capscrews.
(2) Using Tool J-5892-1, compress each valve spring
and remove locks. Release tool and remove spring cap,
spring shield, spring, and oil seal. Wash all parts in
cleaning solvent and dry thoroughly.
(3) Remove valves from cylinder head and place in
rack in proper sequence to facilitate assembly in their
original positions.

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