Mitsubishi 4DQ50 Service Manual page 89

Service Standards
Limit of Use
NLET VALVE
CLOSES.
Remedies
Remarks
Check Ven tur i or governor.
Ditto abov.e
Specified separately.
Refer to "Trouble-Shooting"
At 20-30Cb of oi I arx:\ water
t ratures.
Ditto above.
EXHAUST VALVE CLOSES.
EXHAUST VALVE OPENS.
Refer to "Caution Plate" on rocker cover.
+
0.95
H>ne
to+{).2& ..
+O.g~or
-HI.75
on
ODe
4 cyliDCIer to equal -'er-
naninaldiam .of
COlI'
and use ..,.
oversize pistons
and
ri~
size. Change of 1 iners is
_
_ _ _ _ _ _ _ _ _ -j.:.,~r:.:n:...:be:yo~iId::..l:i:m:i~t.:ct:..:us:el'iic~~e,.... desecribed s aratel •
Ijnen.
Be=grini
to
minimmn required.
0.15
0.10
0.10
Piston pins; -0.05
Check bearirv clearcmces.
UseCoversize pistons accordi;tg
to
01.
8. OVersize:+Q.25, .
-HI.50 aDCI +0.75
Till worn
up
to limit of use,
pistons replacing rings; once
limit over,replilce pistons.
Till worn
up
to limit of •
repair,replace pi ston pins,
once I uni t over ,replace pistons.
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