RM38T0EC _51 Engine / Hybrid System _144958 M20F-FXS, M20G-FXS ENGINE MECHANICAL _0604255 CYLINDER HEAD A

M20F-FXS, M20G-FXS ENGINE MECHANICAL  CYLINDER HEAD  DISASSEMBLY  


CAUTION / NOTICE / HINT

The necessary procedures (adjustment, calibration, initialization or registration) that must be performed after parts are removed and installed, or replaced during cylinder head removal/installation are shown below.

Necessary Procedures After Parts Removed/Installed/Replaced
Replaced Part or Performed Procedure Necessary Procedure Effect/Inoperative Function when Necessary Procedure not Performed Link
Replacement of cylinder head sub-assembly Inspection after repair
·

Poor idle, etc.

·

Engine start function, etc.


(Click here)

CAUTION / NOTICE / HINT

COMPONENTS (DISASSEMBLY)
A536547N01
4.167,0.833 4.5,0.833 false 4.219,0.448 4.552,0.448 false 4.198,0.167 4.531,0.167 false 4.167,1.458 4.5,1.458 false 4.135,1.25 4.583,1.083 4.583,1.083 4.75,1.083 false 4.104,1.76 4.354,1.76 false 5.802,1.719 6.052,1.719 false 5.042,1.51 5.24,1.302 5.24,1.302 5.406,1.302 false 1,2.708 1.333,2.708 false 2.865,1.771 3.198,1.771 false 2.698,1.469 3.031,1.469 false 2.708,1.271 3.042,1.271 false 2.604,0.833 2.854,0.833 false 2.417,0.458 2.75,0.458 false 2.375,0.156 2.708,0.156 false 3.417,5.25 3.792,5.25 false 4.292,5.083 4.667,5.083 false 1.667,3.667 1.667,3.302 false 0.594,2.646 0.75,2.844 0.156,0.198 10 false ● 2.427,1.719 2.583,1.917 0.156,0.198 10 false ● 2.344,1.188 2.5,1.385 0.156,0.198 10 false ● 5.688,1.219 5.844,1.417 0.156,0.198 10 false ★ 4.208,0.167 4.417,0.365 0.208,0.198 10 false x8 4.188,0.438 4.396,0.635 0.208,0.198 10 false x8 4.198,0.917 4.406,1.115 0.208,0.198 10 false x8 4.125,1.25 4.333,1.448 0.208,0.198 10 false x8 4.094,1.448 4.302,1.646 0.208,0.198 10 false x8 4.125,1.781 4.333,1.979 0.208,0.198 10 false x8 5.031,1.573 5.24,1.771 0.208,0.198 10 false x4 3.896,5.552 4.104,5.75 0.208,0.198 10 false x8 4.563,5.385 4.771,5.583 0.208,0.198 10 false x8 1.74,3.333 1.948,3.531 0.208,0.198 10 false x7 3.313,1.75 3.521,1.948 0.208,0.198 10 false x8 3.208,1.344 3.417,1.542 0.208,0.198 10 false x8 3.156,1.188 3.365,1.385 0.208,0.198 10 false x8 3.094,0.875 3.302,1.073 0.208,0.198 10 false x8 2.885,0.375 3.094,0.573 0.208,0.198 10 false x8 2.781,0.063 2.99,0.26 0.208,0.198 10 false x8 4.74,0.01 5.115,0.313 0.375,0.302 18 false 1 4.594,0.323 4.969,0.625 0.375,0.302 18 false 2 4.542,0.677 4.917,0.979 0.375,0.302 18 false 4 5,0.948 5.375,1.25 0.375,0.302 18 false 8 4.719,1.25 5.094,1.552 0.375,0.302 18 false 10 4.563,1.635 4.938,1.938 0.375,0.302 18 false 14 5.833,1.167 6.208,1.469 0.375,0.302 18 false 11 6.365,1.552 6.74,1.854 0.375,0.302 18 false 15 4.708,4.917 5.083,5.219 0.375,0.302 18 false 5 1.521,3.75 1.938,4.052 0.417,0.302 18 false 12 0.656,2.573 1.031,2.875 0.375,0.302 18 false 15 2.542,1.615 2.917,1.917 0.375,0.302 18 false 13 2.49,1.375 2.865,1.677 0.375,0.302 18 false 9 2.5,1.104 2.875,1.406 0.375,0.302 18 false 7 2.406,0.688 2.781,0.99 0.375,0.302 18 false 3 2.208,0.323 2.583,0.625 0.375,0.302 18 false 2 2.229,0.01 2.604,0.313 0.375,0.302 18 false 1 4.833,1 4.99,1.198 0.156,0.198 10 false ● 3.219,5.104 3.594,5.406 0.375,0.302 18 false 6

Procedure Part Name Code
Z101186

Z101188

Z101187

1 VALVE SPRING RETAINER LOCK 13741A (Click here) - -
2 VALVE SPRING RETAINER 13741B - - -
3 INTAKE VALVE COMPRESSION SPRING 13711M - - -
4 EXHAUST VALVE COMPRESSION SPRING 13715H - - -
5 INTAKE VALVE 13711 - - -
6 EXHAUST VALVE 13715 - - -
7 INTAKE VALVE STEM OIL SEAL 13711E - - -
8 EXHAUST VALVE STEM OIL SEAL 13715A - - -
9 INTAKE VALVE SPRING SEAT 13734A (Click here) - -
10 EXHAUST VALVE SPRING SEAT 13734B (Click here) - -
11 NO. 1 STRAIGHT SCREW PLUG 11117E - - -
12 STUD BOLT - (Click here) - -
13 INTAKE VALVE GUIDE BUSH 11122 (Click here) - -
14 EXHAUST VALVE GUIDE BUSH 11126 (Click here) - -
15 RING PIN 11115A (Click here) - -

● Non-reusable part ★ Precoated part

PROCEDURE

Hide 13741A 1.REMOVE VALVE SPRING RETAINER LOCK

a.
A464797N02
0.5,0.063 0.781,0.417 0.281,0.354 18 false i

i.

Using SST, compress each compression spring and remove the 16 valve spring retainer locks.

SST
09202-70020  (09202-01010, 09202-01020)
09202-00021  



Hide 13741B 2.REMOVE VALVE SPRING RETAINER

a.
A465000


Hide 13711M 3.REMOVE INTAKE VALVE COMPRESSION SPRING (for Intake Side)

a.
A465001


Hide 13715H 4.REMOVE EXHAUST VALVE COMPRESSION SPRING (for Exhaust Side)

a.

Perform the same procedure as for the intake side.


Hide 13711 5.REMOVE INTAKE VALVE

a.
A465002


Hide 13715 6.REMOVE EXHAUST VALVE

a.

Perform the same procedure as for the intake side.


Hide 13711E 7.REMOVE INTAKE VALVE STEM OIL SEAL (for Intake Side)

a.
A468382


Hide 13715A 8.REMOVE EXHAUST VALVE STEM OIL SEAL (for Exhaust Side)

a.

Perform the same procedure as for the intake side.


Hide 13734A 9.REMOVE INTAKE VALVE SPRING SEAT (for Intake Side)

a.
A465026N02
0.438,0.052 0.719,0.406 0.281,0.354 18 false i

i.

Using compressed air and a Magnet Hand, remove the 8 intake valve spring seats from the cylinder head sub-assembly by blowing air onto them.



Hide 13734B 10.REMOVE EXHAUST VALVE SPRING SEAT (for Exhaust Side)

a.

Perform the same procedure as for the intake side.


Hide 11117E 11.REMOVE NO. 1 STRAIGHT SCREW PLUG

Z101186

NOTICE:

If coolant leaks from a No. 1 straight screw plug or a plug is corroded, replace it.



a.
A465004N03
0.479,0.063 0.76,0.417 0.281,0.354 18 false i

i.

Using a 6 mm straight hexagon wrench, remove the 4 No. 1 straight screw plugs from the cylinder head sub-assembly.



Hide 12.REMOVE STUD BOLT

Z101186

NOTICE:

If a stud bolt is deformed or its threads are damaged, replace it.



a.
A465005N02
0.469,0.104 0.75,0.458 0.281,0.354 18 false i

i.

Using an E8 "TORX" socket wrench, remove the 7 stud bolts.



Hide 11122 13.REMOVE INTAKE VALVE GUIDE BUSH

a.
A465006N02
0.427,0.083 0.708,0.438 0.281,0.354 18 false i 4.208,0.073 4.49,0.427 0.281,0.354 18 false ii

i.

Heat the cylinder head sub-assembly to between 80 and 100°C (176 and 212°F).


ii.

Place the cylinder head sub-assembly on wooden blocks.

CAUTION:

Be sure to wear protective gloves.



iii.

Using SST and a hammer, tap out the intake valve guide bush.

SST
09201-01055  
09950-70010  (09951-07100)



Hide 11126 14.REMOVE EXHAUST VALVE GUIDE BUSH

a.
A465007N02
0.417,0.063 0.698,0.417 0.281,0.354 18 true i 4.021,0.073 4.302,0.427 0.281,0.354 18 true ii

i.

Heat the cylinder head sub-assembly to between 80 and 100°C (176 and 212°F).


ii.

Place the cylinder head sub-assembly on wooden blocks.

CAUTION:

Be sure to wear protective gloves.



iii.

Using SST and a hammer, tap out the exhaust valve guide bush.

SST
09201-01055  
09950-70010  (09951-07100)



Hide 11115A 15.REMOVE RING PIN

Z101186

NOTICE:

It is not necessary to remove the ring pins unless they are being replaced.



a.
A465008