Mitsubishi 4DQ50 - Page 91

L.imi t of Use
Remedies
Remarks
1 ) According to Cols.8 and 11,
use overs ize rings. Oversizes:
+O.25,+O.5{) arxl +0.75
1 • 5
2) Replance oil rings in sets
If sample not available,
1 • 5
wi th exparxler spr ings.
measW'e approximately at
top
1
.5
of cylinder.
lhfJ:£e piston pJn o.r) bush
1 )
Use bodies a:rx! caps in
respective pai rs.
2) In putting together each
body
arxI cap,place marks on
same Side.
Ti 11 worn up to limit of repair,
replace metals:one limit over,
use uncIersizes.metals.
Urxlersize:-o.25,-0.50 and -0.75
r~-grirxl Crank shaft pins' under-
slze,-o.25,-0.50,-0.75
Crank shaft pin:+0.25
Re-,gin:l JO\lI'I18ls.~ersize:
1) Use crankcases arxI bearing
-0. ,-0. 0 and -0.7
T i 11 worn up to 1 Lmi t of repair
caps
in a set.
replace metals,once limit
2) Place metal with thrust
over,1ll!e ~er~ze metals;
bearing at top.
Urxlersue.-0.2 ,-0.50 and -0.75
3) Of each pair of metals,
~lac;,g:inl~ri~(wi th
place that which has oi 1 hoh
ust nn.
\pOD the other.
Repair bend or replace.
Measure as set in crankcase.
Re-grind
to minimum required.
If10ver tjmit of repair,repace
Special tools available to
va ve gul es·
~ess them out aDd in.
terferenc:e:more than 0.007
E~l both inlet and exhaust
va
ves. Can be ffl~ed as
I tin.
~~ Valva
How to fit in inserts is
-
Put in seat inserts.
#! ./bore
described separately.
~
~.
s.at,V J J~.
If over I imi t
of repair,widen
Use tapered cutter of 50
0
angle Valve depression
valve bore.
Decrease of margin by
refacing:up to 1.2
- 83-