Mitsubishi 4DQ5 Service Manual download pdf (Page 32)

Crankcase

(1) Inspect the outside and inside surfaces for evidence

cracking. VisuaUy examine the cylinder bores

for scuffing, rusting, erosion or any abnormal

wear. Using a straightedge, check the top

face

(for mating with cylinder head), front

face

(for

mating with front plate) and rear

face

(for mating

with rear plate) for flatness.

(2)

Make

sure that the top

face

the crankcase is

flat within the standard specified below.

the

standard

found

be exceeded, reface the top

by using a surface grinder to make it flat within

the specified standard.

Specifications

Item Standard

Warpage

crankcase

0.05, max.

gasketed surface

Crankshaft

(1) Journals

(0.0020)

Unit:

(in.)

Repair

limit

0.20

(0.0079)

(a) Inspect each journal for surface flaws such

roughing, scratches, pitting and bums, and,

necessary, repair the journals by grinding to the

next undersize or replace the crankshaft.

(b)

Mike

each journal

take a total

four read-

ings

to determine the wear, out-of-round and

taper (cylindricity).

any

the limits is

exceeded, repair by grinding to the next under-

size or replace the crankshaft.

-28-

Checking crankcase top for flatness

Positions for miking journal

1 2 ... 27 28 29 30 31 32 33 34 35 36 37 ... 119 120

Comments to this Manuals

No comments

Mitsubishi 4DQ5 Service Manual Page 32

Comments to this Manuals

Related products and manuals for Engine Mitsubishi 4DQ5