Need some torque specs
#1
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Join Date: Jan 2008
Location: Kenosha, Wi
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Year: 2000
Model: Cherokee
Engine: 4.0L I-6
Need some torque specs
Im looking for Torq specs & order of torq for replacing the head on my jeep. If anyone has a link, that'd be great.
I also need to know which bolts need sealant.
I also need to know which bolts need sealant.
#2
CF Veteran
Hopefully this helps. It's the procedure found in the Factory Service Manual for my '99:
INSTALLATION:
(1) Remove the shop towels from the cylinder
bores. Coat the bores with clean engine oil.
(2) Install cylinder head alignment studs VM.1009.
(3) After determining the correct head gasket
thickness, clean the block and head mating surfaces,
place the engine cylinder head gasket over the alignment
studs.
(4) Place the engine cylinder head over the alignment
studs.
CAUTION: New cylinder head bolts should be used.
(5) Tighten the engine cylinder head bolts in
sequence according to the following procedure (Fig.
38):
a. The threads and underside heads of the bolts
should be lubricated. Use the cylinder head alignment
studs tool number VM-1009. Position the heads
on the block and secure with the ten large center
bolts and spacers (clamps), finger tight only.
b. Ensure that the various clamps are installed
correctly and the head gasket remains in it’s proper
position, completely covered. Then, lubricate and
install the eight small bolts, also finger tight.
(6) Install the intake and exhaust manifolds with
a new gasket, partially tightening the nuts to a maximum
of 5 N·m (44 in. lbs.). This will align the heads.
Refer to Group 11, Exhaust System and Turbocharger
for the proper procedure. Install lift eye and
brake vacuum tube at this time.
(7) Then, tighten the 12mm bolts with special tool
VM.1019 in the following manner:
(8) 1st Phase: Tightening Head Bolts (Fig. 38).
Central bolts (A-L): Tighten all bolts, starting with
bolt H then G-F-E-D-C-B-A-L-I, to 30 N·m. Tighten
all bolts an additional 70°, starting with bolt A and
continuing in alphabetical order. Finally, tighten all
bolts an additional 70°, starting again with bolt A
and continuing in alphabetical order.
(9) Tighten the 14mm bolts in the following manner:
(10) Side bolts (M1-M2): Tighten M1 bolts to 30
N·m, then rotate them 85° (65). Tighten M2 bolts to
30 N·m, then rotate them 85° (65).
NOTE: If vehicle is equipped with A/C do not install
A/C lines to compressor and charge A/C till Phase 2
is complete.
(11) 2nd Phase: After 20 minutes of engine operation
at operating temperature, allow engine to cool
down completely. Then retorque the head bolts as follows:
(12) Central bolts A-L: Completely back off bolts
one-by-one and then retighten to 30 N·m plus 130°
(65°). Then proceed in the same way, bolt by bolt,
following alphabetical order, as indicated.
(13) Side bolts M1-M2: Without slackening,
torque bolts M1 then bolts M2 to 90 N·m (66 ft. lbs.).
(14) Torque intake nuts to 32 N·m (24 ft. lbs.) and
exhaust manifolds nuts to 32 N·m (24 ft. lbs.) after
completing the cylinder head torquing procedure.
NOTE: If the engine cylinder head is to be replaced
and the original valves used, measure the valve
stem diameter. Only standard size valves can be
used with a service replacement engine cylinder
head unless the replacement head valve stem guide
bores are reamed to accommodate oversize valve
stems. Remove all carbon buildup and reface the
valves.
(15) Install the oil feed lines for the rocker arm
assemblies and oil pressure switch. Torque oil feed
lines to 13 N·m (115 in. lbs.).
(16) Install the push rods and rocker arm assemblies,
tighten nuts to 29 N·m (22 ft. lbs.).
(17) Install the cylinder head cover. Torque bolts to
15 N·m (133 in. lbs.).
(18) Connect the crankcase breather hose.
(19) Connect the injector sensor wire and the glow
plug hot lead.
(20) Install the turbocharger oil feed line. Torque
banjo bolts to 27 N·m (20 ft. lbs).
(21) Install the turbocharger oil drain line. Torque
bolts to 11 N·m (97 in. lbs.).
(22) Install the water manifold. Torque bolts to 12
N·m (106 in. lbs.).
(23) Install the generator support bracket.
(24) Raise the vehicle on hoist.
(25) Install the exhaust down pipe to turbocharger,
tighten bolts to 22 N·m (16 ft. lbs.).
(26) Install the exhaust down pipe heat shield.
(27) Install the exhaust heat shield, Tighten bolts
to 11 N·m (8 ft. lbs.).
(28) Install the EGR valve to intake manifold,
tighten bolts to 26 N·m (19 ft. lbs.).
(29) Install the EGR tube to EGR valve, tighten
bolts to 26 N·m (19 ft. lbs.).
(30) Install the lower Charge air cooler hose to turbocharger.
(31) Install the air cleaner assembly and hose.
(32) Install the oil breather hose to air cleaner
hose.
(33) Install the upper charge cooler hose to turbocharger.
(34) Connect the recover bottle hose to water manifold.
(35) Install the fuel injectors using special tool
VM.1012. Refer to Group 14, Fuel System for procedures.
(36) Install the fuel injector lines from the pump
to injectors. Torque nuts to 23 N·m (17 ft. lbs.).
(37) Connect the A/C lines to compressor and
install bracket on cylinder head cover, if equipped
with air conditioning.
(38) Install the fuel filter, Tighten bolts to 28 N·m
(250 in. lbs.)
(39) Connect the fuel supply and return lines
(40) Connect the upper radiator hose.
(41) Connect the negative cable battery.
(42) If equipped with A/C, evacuate and charge the
air conditioning system. Refer to Group 24, Heater
and Air Conditioning.
(43) Fill the cooling system. Check for leaks.
WARNING: USE EXTREME CAUTION WHEN THE
ENGINE IS OPERATING. DO NOT STAND IN DIRECT
LINE WITH THE FAN. DO NOT PUT HANDS NEAR
THE PULLEYS, BELTS OR FAN. DO NOT WEAR
LOOSE CLOTHING.
(44) Operate the engine with the radiator cap off.
Inspect for leaks and continue operating the engine
until the thermostat opens. Add coolant, if required.
CAUTION: After rebuild or cylinder head gasket
replacement, the cylinder head must be retorqued
within the first 20,000km. If individual fiber type
head gaskets were used.
NOTE: The one piece steel type head gasket does
not require, the above mentioned, retorque procedure.
CYLINDER HEAD RE-TORQUE
Within the first 20,000 km (12,000 miles) after
rebuild, retorque the cylinder head bolts as follows:
(Fig. 38) Central bolts A-L: Without slackening the
bolts, following alphabetical order tighten the bolts
through an angle of 15°. Side bolts M1-M2: Without
slackening, tighten M1 then M2 bolts through an
angle of 15°.
INSTALLATION:
(1) Remove the shop towels from the cylinder
bores. Coat the bores with clean engine oil.
(2) Install cylinder head alignment studs VM.1009.
(3) After determining the correct head gasket
thickness, clean the block and head mating surfaces,
place the engine cylinder head gasket over the alignment
studs.
(4) Place the engine cylinder head over the alignment
studs.
CAUTION: New cylinder head bolts should be used.
(5) Tighten the engine cylinder head bolts in
sequence according to the following procedure (Fig.
38):
a. The threads and underside heads of the bolts
should be lubricated. Use the cylinder head alignment
studs tool number VM-1009. Position the heads
on the block and secure with the ten large center
bolts and spacers (clamps), finger tight only.
b. Ensure that the various clamps are installed
correctly and the head gasket remains in it’s proper
position, completely covered. Then, lubricate and
install the eight small bolts, also finger tight.
(6) Install the intake and exhaust manifolds with
a new gasket, partially tightening the nuts to a maximum
of 5 N·m (44 in. lbs.). This will align the heads.
Refer to Group 11, Exhaust System and Turbocharger
for the proper procedure. Install lift eye and
brake vacuum tube at this time.
(7) Then, tighten the 12mm bolts with special tool
VM.1019 in the following manner:
(8) 1st Phase: Tightening Head Bolts (Fig. 38).
Central bolts (A-L): Tighten all bolts, starting with
bolt H then G-F-E-D-C-B-A-L-I, to 30 N·m. Tighten
all bolts an additional 70°, starting with bolt A and
continuing in alphabetical order. Finally, tighten all
bolts an additional 70°, starting again with bolt A
and continuing in alphabetical order.
(9) Tighten the 14mm bolts in the following manner:
(10) Side bolts (M1-M2): Tighten M1 bolts to 30
N·m, then rotate them 85° (65). Tighten M2 bolts to
30 N·m, then rotate them 85° (65).
NOTE: If vehicle is equipped with A/C do not install
A/C lines to compressor and charge A/C till Phase 2
is complete.
(11) 2nd Phase: After 20 minutes of engine operation
at operating temperature, allow engine to cool
down completely. Then retorque the head bolts as follows:
(12) Central bolts A-L: Completely back off bolts
one-by-one and then retighten to 30 N·m plus 130°
(65°). Then proceed in the same way, bolt by bolt,
following alphabetical order, as indicated.
(13) Side bolts M1-M2: Without slackening,
torque bolts M1 then bolts M2 to 90 N·m (66 ft. lbs.).
(14) Torque intake nuts to 32 N·m (24 ft. lbs.) and
exhaust manifolds nuts to 32 N·m (24 ft. lbs.) after
completing the cylinder head torquing procedure.
NOTE: If the engine cylinder head is to be replaced
and the original valves used, measure the valve
stem diameter. Only standard size valves can be
used with a service replacement engine cylinder
head unless the replacement head valve stem guide
bores are reamed to accommodate oversize valve
stems. Remove all carbon buildup and reface the
valves.
(15) Install the oil feed lines for the rocker arm
assemblies and oil pressure switch. Torque oil feed
lines to 13 N·m (115 in. lbs.).
(16) Install the push rods and rocker arm assemblies,
tighten nuts to 29 N·m (22 ft. lbs.).
(17) Install the cylinder head cover. Torque bolts to
15 N·m (133 in. lbs.).
(18) Connect the crankcase breather hose.
(19) Connect the injector sensor wire and the glow
plug hot lead.
(20) Install the turbocharger oil feed line. Torque
banjo bolts to 27 N·m (20 ft. lbs).
(21) Install the turbocharger oil drain line. Torque
bolts to 11 N·m (97 in. lbs.).
(22) Install the water manifold. Torque bolts to 12
N·m (106 in. lbs.).
(23) Install the generator support bracket.
(24) Raise the vehicle on hoist.
(25) Install the exhaust down pipe to turbocharger,
tighten bolts to 22 N·m (16 ft. lbs.).
(26) Install the exhaust down pipe heat shield.
(27) Install the exhaust heat shield, Tighten bolts
to 11 N·m (8 ft. lbs.).
(28) Install the EGR valve to intake manifold,
tighten bolts to 26 N·m (19 ft. lbs.).
(29) Install the EGR tube to EGR valve, tighten
bolts to 26 N·m (19 ft. lbs.).
(30) Install the lower Charge air cooler hose to turbocharger.
(31) Install the air cleaner assembly and hose.
(32) Install the oil breather hose to air cleaner
hose.
(33) Install the upper charge cooler hose to turbocharger.
(34) Connect the recover bottle hose to water manifold.
(35) Install the fuel injectors using special tool
VM.1012. Refer to Group 14, Fuel System for procedures.
(36) Install the fuel injector lines from the pump
to injectors. Torque nuts to 23 N·m (17 ft. lbs.).
(37) Connect the A/C lines to compressor and
install bracket on cylinder head cover, if equipped
with air conditioning.
(38) Install the fuel filter, Tighten bolts to 28 N·m
(250 in. lbs.)
(39) Connect the fuel supply and return lines
(40) Connect the upper radiator hose.
(41) Connect the negative cable battery.
(42) If equipped with A/C, evacuate and charge the
air conditioning system. Refer to Group 24, Heater
and Air Conditioning.
(43) Fill the cooling system. Check for leaks.
WARNING: USE EXTREME CAUTION WHEN THE
ENGINE IS OPERATING. DO NOT STAND IN DIRECT
LINE WITH THE FAN. DO NOT PUT HANDS NEAR
THE PULLEYS, BELTS OR FAN. DO NOT WEAR
LOOSE CLOTHING.
(44) Operate the engine with the radiator cap off.
Inspect for leaks and continue operating the engine
until the thermostat opens. Add coolant, if required.
CAUTION: After rebuild or cylinder head gasket
replacement, the cylinder head must be retorqued
within the first 20,000km. If individual fiber type
head gaskets were used.
NOTE: The one piece steel type head gasket does
not require, the above mentioned, retorque procedure.
CYLINDER HEAD RE-TORQUE
Within the first 20,000 km (12,000 miles) after
rebuild, retorque the cylinder head bolts as follows:
(Fig. 38) Central bolts A-L: Without slackening the
bolts, following alphabetical order tighten the bolts
through an angle of 15°. Side bolts M1-M2: Without
slackening, tighten M1 then M2 bolts through an
angle of 15°.
#5
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Join Date: Aug 2011
Location: Prescott, Az
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Received 1,527 Likes
on
1,239 Posts
Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
Hopefully this helps. It's the procedure found in the Factory Service Manual for my '99:
INSTALLATION:
(1) Remove the shop towels from the cylinder
bores. Coat the bores with clean engine oil.
(2) Install cylinder head alignment studs VM.1009.
(3) After determining the correct head gasket
thickness, clean the block and head mating surfaces,
place the engine cylinder head gasket over the alignment
studs.
(4) Place the engine cylinder head over the alignment
studs.
CAUTION: New cylinder head bolts should be used.
(5) Tighten the engine cylinder head bolts in
sequence according to the following procedure (Fig.
38):
a. The threads and underside heads of the bolts
should be lubricated. Use the cylinder head alignment
studs tool number VM-1009. Position the heads
on the block and secure with the ten large center
bolts and spacers (clamps), finger tight only.
b. Ensure that the various clamps are installed
correctly and the head gasket remains in it’s proper
position, completely covered. Then, lubricate and
install the eight small bolts, also finger tight.
(6) Install the intake and exhaust manifolds with
a new gasket, partially tightening the nuts to a maximum
of 5 N·m (44 in. lbs.). This will align the heads.
Refer to Group 11, Exhaust System and Turbocharger
for the proper procedure. Install lift eye and
brake vacuum tube at this time.
(7) Then, tighten the 12mm bolts with special tool
VM.1019 in the following manner:
(8) 1st Phase: Tightening Head Bolts (Fig. 38).
Central bolts (A-L): Tighten all bolts, starting with
bolt H then G-F-E-D-C-B-A-L-I, to 30 N·m. Tighten
all bolts an additional 70°, starting with bolt A and
continuing in alphabetical order. Finally, tighten all
bolts an additional 70°, starting again with bolt A
and continuing in alphabetical order.
(9) Tighten the 14mm bolts in the following manner:
(10) Side bolts (M1-M2): Tighten M1 bolts to 30
N·m, then rotate them 85° (65). Tighten M2 bolts to
30 N·m, then rotate them 85° (65).
NOTE: If vehicle is equipped with A/C do not install
A/C lines to compressor and charge A/C till Phase 2
is complete.
(11) 2nd Phase: After 20 minutes of engine operation
at operating temperature, allow engine to cool
down completely. Then retorque the head bolts as follows:
(12) Central bolts A-L: Completely back off bolts
one-by-one and then retighten to 30 N·m plus 130°
(65°). Then proceed in the same way, bolt by bolt,
following alphabetical order, as indicated.
(13) Side bolts M1-M2: Without slackening,
torque bolts M1 then bolts M2 to 90 N·m (66 ft. lbs.).
(14) Torque intake nuts to 32 N·m (24 ft. lbs.) and
exhaust manifolds nuts to 32 N·m (24 ft. lbs.) after
completing the cylinder head torquing procedure.
NOTE: If the engine cylinder head is to be replaced
and the original valves used, measure the valve
stem diameter. Only standard size valves can be
used with a service replacement engine cylinder
head unless the replacement head valve stem guide
bores are reamed to accommodate oversize valve
stems. Remove all carbon buildup and reface the
valves.
(15) Install the oil feed lines for the rocker arm
assemblies and oil pressure switch. Torque oil feed
lines to 13 N·m (115 in. lbs.).
(16) Install the push rods and rocker arm assemblies,
tighten nuts to 29 N·m (22 ft. lbs.).
(17) Install the cylinder head cover. Torque bolts to
15 N·m (133 in. lbs.).
(18) Connect the crankcase breather hose.
(19) Connect the injector sensor wire and the glow
plug hot lead.
(20) Install the turbocharger oil feed line. Torque
banjo bolts to 27 N·m (20 ft. lbs).
(21) Install the turbocharger oil drain line. Torque
bolts to 11 N·m (97 in. lbs.).
(22) Install the water manifold. Torque bolts to 12
N·m (106 in. lbs.).
(23) Install the generator support bracket.
(24) Raise the vehicle on hoist.
(25) Install the exhaust down pipe to turbocharger,
tighten bolts to 22 N·m (16 ft. lbs.).
(26) Install the exhaust down pipe heat shield.
(27) Install the exhaust heat shield, Tighten bolts
to 11 N·m (8 ft. lbs.).
(28) Install the EGR valve to intake manifold,
tighten bolts to 26 N·m (19 ft. lbs.).
(29) Install the EGR tube to EGR valve, tighten
bolts to 26 N·m (19 ft. lbs.).
(30) Install the lower Charge air cooler hose to turbocharger.
(31) Install the air cleaner assembly and hose.
(32) Install the oil breather hose to air cleaner
hose.
(33) Install the upper charge cooler hose to turbocharger.
(34) Connect the recover bottle hose to water manifold.
(35) Install the fuel injectors using special tool
VM.1012. Refer to Group 14, Fuel System for procedures.
(36) Install the fuel injector lines from the pump
to injectors. Torque nuts to 23 N·m (17 ft. lbs.).
(37) Connect the A/C lines to compressor and
install bracket on cylinder head cover, if equipped
with air conditioning.
(38) Install the fuel filter, Tighten bolts to 28 N·m
(250 in. lbs.)
(39) Connect the fuel supply and return lines
(40) Connect the upper radiator hose.
(41) Connect the negative cable battery.
(42) If equipped with A/C, evacuate and charge the
air conditioning system. Refer to Group 24, Heater
and Air Conditioning.
(43) Fill the cooling system. Check for leaks.
WARNING: USE EXTREME CAUTION WHEN THE
ENGINE IS OPERATING. DO NOT STAND IN DIRECT
LINE WITH THE FAN. DO NOT PUT HANDS NEAR
THE PULLEYS, BELTS OR FAN. DO NOT WEAR
LOOSE CLOTHING.
(44) Operate the engine with the radiator cap off.
Inspect for leaks and continue operating the engine
until the thermostat opens. Add coolant, if required.
CAUTION: After rebuild or cylinder head gasket
replacement, the cylinder head must be retorqued
within the first 20,000km. If individual fiber type
head gaskets were used.
NOTE: The one piece steel type head gasket does
not require, the above mentioned, retorque procedure.
CYLINDER HEAD RE-TORQUE
Within the first 20,000 km (12,000 miles) after
rebuild, retorque the cylinder head bolts as follows:
(Fig. 38) Central bolts A-L: Without slackening the
bolts, following alphabetical order tighten the bolts
through an angle of 15°. Side bolts M1-M2: Without
slackening, tighten M1 then M2 bolts through an
angle of 15°.
INSTALLATION:
(1) Remove the shop towels from the cylinder
bores. Coat the bores with clean engine oil.
(2) Install cylinder head alignment studs VM.1009.
(3) After determining the correct head gasket
thickness, clean the block and head mating surfaces,
place the engine cylinder head gasket over the alignment
studs.
(4) Place the engine cylinder head over the alignment
studs.
CAUTION: New cylinder head bolts should be used.
(5) Tighten the engine cylinder head bolts in
sequence according to the following procedure (Fig.
38):
a. The threads and underside heads of the bolts
should be lubricated. Use the cylinder head alignment
studs tool number VM-1009. Position the heads
on the block and secure with the ten large center
bolts and spacers (clamps), finger tight only.
b. Ensure that the various clamps are installed
correctly and the head gasket remains in it’s proper
position, completely covered. Then, lubricate and
install the eight small bolts, also finger tight.
(6) Install the intake and exhaust manifolds with
a new gasket, partially tightening the nuts to a maximum
of 5 N·m (44 in. lbs.). This will align the heads.
Refer to Group 11, Exhaust System and Turbocharger
for the proper procedure. Install lift eye and
brake vacuum tube at this time.
(7) Then, tighten the 12mm bolts with special tool
VM.1019 in the following manner:
(8) 1st Phase: Tightening Head Bolts (Fig. 38).
Central bolts (A-L): Tighten all bolts, starting with
bolt H then G-F-E-D-C-B-A-L-I, to 30 N·m. Tighten
all bolts an additional 70°, starting with bolt A and
continuing in alphabetical order. Finally, tighten all
bolts an additional 70°, starting again with bolt A
and continuing in alphabetical order.
(9) Tighten the 14mm bolts in the following manner:
(10) Side bolts (M1-M2): Tighten M1 bolts to 30
N·m, then rotate them 85° (65). Tighten M2 bolts to
30 N·m, then rotate them 85° (65).
NOTE: If vehicle is equipped with A/C do not install
A/C lines to compressor and charge A/C till Phase 2
is complete.
(11) 2nd Phase: After 20 minutes of engine operation
at operating temperature, allow engine to cool
down completely. Then retorque the head bolts as follows:
(12) Central bolts A-L: Completely back off bolts
one-by-one and then retighten to 30 N·m plus 130°
(65°). Then proceed in the same way, bolt by bolt,
following alphabetical order, as indicated.
(13) Side bolts M1-M2: Without slackening,
torque bolts M1 then bolts M2 to 90 N·m (66 ft. lbs.).
(14) Torque intake nuts to 32 N·m (24 ft. lbs.) and
exhaust manifolds nuts to 32 N·m (24 ft. lbs.) after
completing the cylinder head torquing procedure.
NOTE: If the engine cylinder head is to be replaced
and the original valves used, measure the valve
stem diameter. Only standard size valves can be
used with a service replacement engine cylinder
head unless the replacement head valve stem guide
bores are reamed to accommodate oversize valve
stems. Remove all carbon buildup and reface the
valves.
(15) Install the oil feed lines for the rocker arm
assemblies and oil pressure switch. Torque oil feed
lines to 13 N·m (115 in. lbs.).
(16) Install the push rods and rocker arm assemblies,
tighten nuts to 29 N·m (22 ft. lbs.).
(17) Install the cylinder head cover. Torque bolts to
15 N·m (133 in. lbs.).
(18) Connect the crankcase breather hose.
(19) Connect the injector sensor wire and the glow
plug hot lead.
(20) Install the turbocharger oil feed line. Torque
banjo bolts to 27 N·m (20 ft. lbs).
(21) Install the turbocharger oil drain line. Torque
bolts to 11 N·m (97 in. lbs.).
(22) Install the water manifold. Torque bolts to 12
N·m (106 in. lbs.).
(23) Install the generator support bracket.
(24) Raise the vehicle on hoist.
(25) Install the exhaust down pipe to turbocharger,
tighten bolts to 22 N·m (16 ft. lbs.).
(26) Install the exhaust down pipe heat shield.
(27) Install the exhaust heat shield, Tighten bolts
to 11 N·m (8 ft. lbs.).
(28) Install the EGR valve to intake manifold,
tighten bolts to 26 N·m (19 ft. lbs.).
(29) Install the EGR tube to EGR valve, tighten
bolts to 26 N·m (19 ft. lbs.).
(30) Install the lower Charge air cooler hose to turbocharger.
(31) Install the air cleaner assembly and hose.
(32) Install the oil breather hose to air cleaner
hose.
(33) Install the upper charge cooler hose to turbocharger.
(34) Connect the recover bottle hose to water manifold.
(35) Install the fuel injectors using special tool
VM.1012. Refer to Group 14, Fuel System for procedures.
(36) Install the fuel injector lines from the pump
to injectors. Torque nuts to 23 N·m (17 ft. lbs.).
(37) Connect the A/C lines to compressor and
install bracket on cylinder head cover, if equipped
with air conditioning.
(38) Install the fuel filter, Tighten bolts to 28 N·m
(250 in. lbs.)
(39) Connect the fuel supply and return lines
(40) Connect the upper radiator hose.
(41) Connect the negative cable battery.
(42) If equipped with A/C, evacuate and charge the
air conditioning system. Refer to Group 24, Heater
and Air Conditioning.
(43) Fill the cooling system. Check for leaks.
WARNING: USE EXTREME CAUTION WHEN THE
ENGINE IS OPERATING. DO NOT STAND IN DIRECT
LINE WITH THE FAN. DO NOT PUT HANDS NEAR
THE PULLEYS, BELTS OR FAN. DO NOT WEAR
LOOSE CLOTHING.
(44) Operate the engine with the radiator cap off.
Inspect for leaks and continue operating the engine
until the thermostat opens. Add coolant, if required.
CAUTION: After rebuild or cylinder head gasket
replacement, the cylinder head must be retorqued
within the first 20,000km. If individual fiber type
head gaskets were used.
NOTE: The one piece steel type head gasket does
not require, the above mentioned, retorque procedure.
CYLINDER HEAD RE-TORQUE
Within the first 20,000 km (12,000 miles) after
rebuild, retorque the cylinder head bolts as follows:
(Fig. 38) Central bolts A-L: Without slackening the
bolts, following alphabetical order tighten the bolts
through an angle of 15°. Side bolts M1-M2: Without
slackening, tighten M1 then M2 bolts through an
angle of 15°.
#6
::CF Moderator::
Join Date: Aug 2011
Location: Prescott, Az
Posts: 43,876
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Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
#7
CF Veteran
Join Date: Aug 2010
Location: Canton, MI
Posts: 8,357
Likes: 0
Received 82 Likes
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Year: 1999
Model: Cherokee
Engine: 4.0
It always baffles me why someone would tackle a job like a head replacement and not have any data at hand to go by. Even a Haynes manual has the procedures for head R & R.
Trending Topics
#8
::CF Moderator::
Join Date: Aug 2011
Location: Prescott, Az
Posts: 43,876
Received 1,527 Likes
on
1,239 Posts
Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
How about posting up a copy of the FSM for the wrong engine?
#10
::CF Moderator::
Join Date: Aug 2011
Location: Prescott, Az
Posts: 43,876
Received 1,527 Likes
on
1,239 Posts
Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
Don't post your engine.
Reply not knowing the engine.
Getting thanked for the incorrect info.
And there may be a fourth one: Me ASSuming it's a 4.0, and responding.
#12
Senior Member
This is an old post but I believe in post #6 bolt torque levels for a 4.0 engine are reversed between bolt 11 and all the others. Bolt 11, which goes into the water jacket, should have a lower torque than the others: 100 ft.lb. for bolt 11, 110 ft. lb. for all others. Also: bolt 11 gets Loctite 592 thread sealant (Loctite P/N 59231. I am just finishing replacing the head on my 2000 4.0 and did a large amount of research, including using a FSM. Hopefully this will save someone from using the wrong torque values but it is a good idea to always reference a service manual or other verified info for critical procedures.
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