MerCruiser 305 CID (5.0L) Service Manual page 194

5.0l / 305 cid / 5.7l / 350 cid ENGINES
Cleaning and Inspection
1. Thoroughly clean all parts in cleaning solvent and inspect them carefully. If any parts are
damaged or worn, entire lifter assembly should be replaced.
2. If outer lifter body wall is scuffed or worn, inspect cylinder block lifter bore.
3. If roller of lifter is scuffed or worn, inspect camshaft lobe.
4. If push rod seat is scuffed or worn, inspect push rod.
Installation
IMPORTANT: It is recommended that the engine oil be changed and a new oil filter be
installed whenever servicing valve lifters or camshaft.
IMPORTANT: Before installing lifters/rollers, coat the bottom of the lifter/roller with
engine oil. If new lifters or a new camshaft have been installed, an additive containing
EP lube (such as General Motors Cam and Lifter Prelube or equivalent) should be
poured over camshaft lobes before installing lifters.
IMPORTANT: Before installation, coat entire valve lifter with engine oil.
IMPORTANT: DO NOT install used valve lifters if a new camshaft has been installed.
1. Install roller lifters and components.
2. Torque roller lifter restrictor retainer plate fasteners to 18 lb-ft (25 Nm).
3. Install intake manifold.
4. Install and adjust valve mechanism.
5. Install rocker arm cover.
6. Start engine and check for leaks.
Index
Page 3A-28
SERVICE MANUAL NUMBER 24
90-861327--1 OCTOBER 1999