Specifications

4M41 ENGINE -
Cylinder Head and Valve Mechanism
11B-16-11
(2) Turn the cam
A
of the tensioner
9
to thrust the plunger
B
in a nd lock the plunger with the hook
C
. Then, install
the tensioner in that state.
(3) Crank the engine in the normal direction (clockwise).
Caution
1. If the tensioner 9 is installed without thrusting
the plunger B in, the timing chain *b may be
damaged by excessive tension.
2. The tensioner 9 stretches the timing chain *b to
optimum tension by means of the internal ratchet
mechanism. If the engine is cranked counter-
clockwise (as viewed from the front) after the ten-
sioner 9 is installed, an excessive thrust is exerted
to the plunger B and the cam A may be damaged
as a result. Should the engine be cranked counter-
clockwise, remove the tensioner and re-install it
in the sequence described above.
NOTE
If the engine is cranked in the normal direction (clockwise)
after the tensioner has been installed, the hook
C
will
be released automatically, the timing chain being adjusted
to optimum tension by means of the internal ratchet
mechanism.
INSPECTION
1. INTAKE AND EXHAUST VALVES
(1) Checking Stem for Wear
Replace the valve
23
,
24
if the diameter is below the
specified service limit or uneven wear is recognized.
Standard value:
Intake 6.560 - 6.575 mm
Exhaust 6.53 - 6.55 mm
Limit: 6.45 mm
Caution
If the valve 23, 24 is new, be sure to lap it and the
valve seat 27, 28 for proper seating.
(2) Valve Seat Angle and Valve Margin
Correct or replace the valve
23
,
24
if the specified service
limit is exceeded.
Standard value:
Valve seat angle 45
_ ±
15’
Valve margine 1.0 mm
Limit:
Valve margine 0.8 mm
A
: Valve seat angle
B
: Valve margin
PWEE9409-D
E
Feb. 2000Mitsubishi Motors Corporation Added
A
B
C
*b
9
D
23, 24
23, 24
A
B