Inspection Of Cylinder Block - Toyota Celica Supra 1986 Service And Repair Manual

EM·48 ENGINE MECHANICA L - Cylinder Block
0
Front • Oi...ction
®
(D Ttvust
®
A><i ..
Direction
10mm
10.391n.)
Middle
10mm
10.39 in.)
INSPECTION OF CYLINDER BLOCK
1. REMOVE GASKET MATERIAL
Using a gasket sere per, remove
aU
gasket mateual from
the cylinder bloc, k surfaces.
2.
CLEAN CYLINDER BLOCK
Using a soft brush and solvent, clean t he block.
3.
INSPECT CYLINDERS
4 .
Visually inse>eet cylinders for venical scratches. If deep
sctatctles are preseflt, robore aU six cylindeu. (See page
EM-50)
INSPECT CYLINDER BLOCK WARPAGE
Warpege: Limit 0 .06 mm (0.0020 in.)
If warpage is greater than the specif ied value, replace tho
cylinder block .
6. MEASURE CYLINDER BORE
Using a cylinder mic· r ometer. measure the cyfinder bore at
positions A. 8 and C In the thrust and axial d irections.
If
any of the following meuurements are not w ithin the
specification, rebore the cylinder. !See pege EM·50l
(a) Cylinder diameter Is greater than the maximum per-
missible limit.
On otandard sized piston
Maximum diameter: 83.25 mm (3.2776 ln.)
On oversized platon (0/S 0 .60)
Maximum diamet er: 83.75 mm (3.2972
in.)
On oversized piston (0/S
0.
761
Maximum diameter: 84.00
mm
(3.307 1 ln.l
On ovenlzed pilton (0/S
1.00)
Maximum diamet er: 84.25
mm
(3.3169 ln.)
lbl If the difference between meaSUt'ements A, 8 and C
is greater than the taper limit. rebore the cylinder.
!See
page EM-501
Taper limit: 0.02 mm (0.0008 ln. I
(c) If the difference between thrust and axial moaaure·
ments is greater than the
out·of~round
limit, reboro
the cylinder. ISee poge EM-501
Out-of-<ound limit: 0 .02 mm (0.0008 in.J
6. REMOVE CYLINDER RIOGE
If wear is less than 0 . 2 mm 1 0.008 in. I. use a ridge reamer
to machine the piston ring ridge at the top of the cylinder.