Toyota 4-Runner 1985 Repair Manual page 89

EM-60
~ r
',-
~ ' . ~ ' . ,
~('
u
Size
O/S 0.50
O/S 1.00
ENGINE MECHANICAL - Cylinder Block
Outside Diameter
mm (in.)
92.460 - 92.490
(3.6402 - 3.6413)
92.960 - 92.990
(3.6598 - 3.6610)
REPLACEMENT OF REAR OIL SEAL
1. REMOVE OIL SEAL FROM OIL SEAL RETAINER
Using a screwdriver, remove the oil seal.
2. INSTALL NEW OIL SEAL ON OIL SEAL RETAINER
(a) Using SST, install a new oil seal.
SST 09223-41020
(b) Coat the seal lightly with multipurpose grease.
BORING OF CYLINDERS
1 . SELECT OVERSIZED PISTON
O/S pistons with pins are available in the sizes listed.
Replace pistons in matched sets. Take the largest boo
measured and select the oversized piston for that bore.
Bore all cylinders for the oversized piston selected.
2. CALCULATE DIMENSION TO BORE CYLINDERS
(a) Using a micrometer, measure the piston diameter as
shown.
(b) Calculate the size each cylinder is to be rebored as
follows:
Size to be rebored
=.
P
+
C - H
P
=
piston diameter
C
=
piston clearance
0.02 - 0.04 mm (0.0008 - 0.0016 in.)
H
=
allowance for honing
Less than 0.02 mm (0.0008 in.)
3. BORE AND HONE CYLINDERS TO CALCULATED
DIMENSIONS
Honing amount: 0.02 mm (0.0008 in.) maximum
CAUTION: Excess honing
will
destroy the finished
roundness.