Mitsubishi Lancer Evolution 8. Manual — part 24
16
4G6 – WATER PUMP, WATER PIPES
Key Points for Fitting
Fitting thermostat housing
(1) Squeeze liquid gasket (thickness 3mm) into area indicated
in drawing.
Liquid gasket brand:
MZ100191 or equivalent
(2) Tighten bolts indicated by j on drawing, to specified torque,
23 ± 4 N
•
m.
(3) Tighten water inlet pipe bolt (k), using fixing on pipe, to
specified torque, 5.0 ± 1.0 N
•
m.
(4) Bolt l was tightened when fitting air control valve bracket
was fitted (See Page 13).
Fitting water outlet fitting
Squeeze liquid gasket (thickness 3 mm) into area shown in
drawing.
Liquid gasket brand:
MZ100191 or equivalent
A
B
17
4G6 – CYLINDER HEAD / VALVES
Cylinder Head / Valves
Checks
Valve springs
(1) Measure free height of spring. If it is above limit, replace
valve spring.
Standard height: 50.4 mm
Limit: 49.4 mm
(2) Measure perpendicularity of spring. If it is ‘leaning’ by more
than the permitted limit, replace the valve spring.
Standard variance from perpendicular:
Within 2.0˚
Limit: 4˚
Perpendicularity
Free height
18
4G6 – PISTONS, CONNECTING RODS
Pistons, Connecting Rods
Removal / Fitting
Removal Order
1. Connecting rod cap nut
7. Piston ring No. 2
2. Connecting rod cap
8. Oil ring
3. Connecting rod bearing
9. Piston pin
4. Piston connecting rod
10. Piston
5. Connecting rod bearing
11. Connecting rod
6. Piston ring No. 1
12. Bolt
Smear engine oil on
all sliding sections
when fitting
*
*
A
*
*
*
*
*
*
*
*
19
4G6 – PISTONS, CONNECTING RODS
Fitting oil ring
1. Fit oil ring spacer into piston ring groove, then ft upper side
rail, and finally fit lower side rail.
NB:
(1) Fit them so that the side rail / spacer gaps are in the
positions shown in the drawing.
(2) Mark (new) spacers and side rails with distinguishing
colour (shown in chart below) to denote their sizes.
2. Tip for fitting side rails: First insert one end of rail into piston
groove. Then, holding this end with your thumb, as shown in
the drawing, push the rest of it in.
Warning
Like the other piston rings, opening the side rails out
with ring expanders may cause them to break.
3. After fitting the side rail on the piston, check that it rotates
smoothly in both directions.
Size
Colour
S.T.D.
None
0.50 mm O.S.
Red
1.00 mm O.S.
Yellow
Upper
side
rail
gap
Lower
side
rail
gap
Spacer gap
End of side rail
A
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