MerCruiser 305 CID (5.0L) Service Manual page 232

5.0l / 305 cid / 5.7l / 350 cid ENGINES
Connecting Rod / Piston Assembly
Removal
1. Remove oil pan and dipstick tube.
2. Remove baffle and oil pump.
3. Remove distributor and intake manifold.
4. Remove cylinder heads.
IMPORTANT: Before ridge and/or deposits are removed, turn crankshaft until piston
is at bottom of stroke and place a cloth on top of piston to collect cuttings. After ridge
and/or deposits are removed, turn crankshaft until piston is at top of stroke, then
remove cloth and cuttings.
5. Use a ridge reamer to remove any ridge and/or deposits from upper end of cylinder bore.
6. Mark connecting rods and bearing caps (left bank 1, 3, 5 and 7; right bank 2, 4, 6 and
8 from front to rear on same side as piston thrust).
7. Remove connecting rod cap and install connecting rod bolt guide (3/8-24) on bolts. Push
connecting rod and piston assembly out of top of cylinder block.
NOTE: Turn crankshaft slightly to disconnect and remove some connecting rod and piston
assemblies.
Index
Page 3A-66
a - Connecting Rod Bolt Guide 3/8-24 (J-5239)
a
SERVICE MANUAL NUMBER 24
72364
90-861327--1 OCTOBER 1999