Acura RL (1996-2004 year). Manual — part 346
Piston Rings
Alignment (cont'd)
2. Rotate the rings in their grooves to make sure they
do not bind.
3. Position the ring end gaps as shown:
SECOND RING GAP
DO NOT position any ring gap
at piston thrust surfaces.
Approx. 90°
TOP RING GAP
DO NOT position any ring gap
in line with piston pin hole.
OIL RING
GAP
SPACER GAP
OIL RING GAP
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Crankshaft Oil Seal
Installation
The seal surface on the block should be dry.
Apply a light coat of oil to the crankshaft and to
the lip of the oil seal.
1. Using the special tool, drive the crankshaft oil seal
into the rear cover.
REAR COVER
DRIVER
ATTACHMENT
Install oil seal with the
part number side
facing out.
2. Confirm that the clearance is equal all the way
around with a feeler gauge.
Clearance: 0.2 - 0.5 mm (0.01 - 0.02 in)
0.2 — 0.5 mm
(0.01 — 0.02 in)
REAR COVER
REAR
COVER
CRANKSHAFT OIL
SEAL
and
for installation
of the oil pump side oil seal.
DRIVER
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3. Stop after the ring compressor pops free, and check
the connecting rod-to-crank journal alignment
before pushing the piston into place.
4. Install the rod caps with bearings, and torque the
nuts to 44 N-m (4.5 kgf-m, 33 Ibf-ft).
RUBBER HOSES
CORRECT
Pistons
Installation
Before installing the piston, apply a coat of engine
oil to the ring grooves and cylinder bores.
1. Install the ring compressor, check that the bearing
is securely in place; then position the piston in the
cylinder and tap it in using the wooden handle of a
hammer.
2. Install the piston/connecting rod assemblies in the
cylinder block.
• Guide the piston carefully to prevent damage.
• Fit long rubber hoses (about 30 cm (12 in) long)
to the connecting rod bolts to protect the crank-
shaft.
• Install the pistons after setting the crankshaft to
BDC for each cylinder.
INCORRECT
The arrow must face
the timing belt side
of the engine and the
connecting rod oil hole
must face the right side
of the engine.
CONNECTING ROD
OIL HOLE
RUBBER
HOSE
NOTE: Maintain downward force on the ring com-
pressor to prevent the rings from expanding before
entering the cylinder bore.
Use the wooden handle
of a hammer to push, or
tap the piston into the
cylinder bore.
RING COMPRESSOR
(Commercially available)
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Crankshaft
Installation
Before installing the crankshaft, apply a coat of
engine oil to the main bearings and rod bearings.
1. Insert the bearing halves in the cylinder block and
connecting rods.
2. Lower the crankshaft into the block.
4. Install the bearings and caps. Tighten the cap bolts
only enough to seat the bearing caps.
TIMING BELT
SIDE
BEARING CAPS
JOURNAL NUMBER
CAP BOLT
9 x 1.25 mm
CAP BOLT
11 x 1.5 mm
BEARING CAP
MAIN BEARING
LONG
BOLT
SHORT
BOLTS
LONG
BOLT
SIDE CAP BOLT
10 x 1.25 mm
RUBBER
CAP
THRUST WASHERS
Grooved sides face
outward.
3. Install the thrust washers on the No. 3 journal. Oil
the thrust washer surfaces.
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