Mercury MerCruiser Engines Service Manual Number 24 GM V-8 305 CID 350 CID

COOLING SYSTEM
Section 6A - Seawater Cooled Models
Torque Specifications  . . . . . . . . . . . . . . . .
6A-2
6A-2
6A-3
6A-3
6A-3
6A-3
6A-3
Seawater Pump Bearing Housing  . . . . .
6A-14
6A-14
6A-15
6A-16
6A-19
6A-19
6A-19
6A-19
6A-20
6A-20
6A-20
6A-20
6A-21
6A-22
6A-23
Tools  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Lubricants / Sealants / Adhesives  . . . . .
Specifications . . . . . . . . . . . . . . . . . . . . . . .
Cooling System Capacity  . . . . . . . . . .
Thermostat  . . . . . . . . . . . . . . . . . . . . . .
Seawater Inlet Recommendations  . . . . .
Transom Mounted or Thru-Hull Seawater
Pickups and Hose  . . . . . . . . . . . . . . . .
Seacock (Seawater Inlet Valve) . . . . .
Sea Strainer  . . . . . . . . . . . . . . . . . . . . .
Seawater Pickups  . . . . . . . . . . . . . . . . . . .
Thru-Hull Mounted . . . . . . . . . . . . . . . .
Transom Mounted  . . . . . . . . . . . . . . . .
Quicksilver Sea Strainer . . . . . . . . . . . . . .
Removal   . . . . . . . . . . . . . . . . . . . . . . . .
Cleaning and Inspection  . . . . . . . . . . .
Installation . . . . . . . . . . . . . . . . . . . . . . .
Disassembly  . . . . . . . . . . . . . . . . . . . . .
Cleaning and Inspection  . . . . . . . . . . .
Reassembly  . . . . . . . . . . . . . . . . . . . . .
Water Circulating Pump  . . . . . . . . . . . . . .
Removal   . . . . . . . . . . . . . . . . . . . . . . . .
Cleaning and Inspection  . . . . . . . . . . .
Installation . . . . . . . . . . . . . . . . . . . . . . .
Drive Belt Tension Adjustment  . . . . . . . .
Flushing Seawater Cooling System . . . .
Thermostat . . . . . . . . . . . . . . . . . . . . . . . . .
Removal   . . . . . . . . . . . . . . . . . . . . . . . .
Testing  . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation . . . . . . . . . . . . . . . . . . . . . . .
Auxiliary Hot Water Heater Installation  .
6A-3
6A-4
6A-4
6A-5
6A-5
6A-6
6A-7
6A-7
6A-8
6A-8
6A-10
6A-10
6A-12
6A-13
Water Tap Locations For Propshaft Coolers . . . .
6A-24
Water Flow Diagrams . . . . . . . . . . . . . . . . 6A-25
305 cid and 350 cid Bravo, Inboard and Ski
Engines  . . . . . . . . . . . . . . . . . . . . . . . . .    6A-25
305 cid and 350 cid Alpha Engines . .
Seawater Pickup Pump  . . . . . . . . . . . . . .
Output Test  . . . . . . . . . . . . . . . . . . . . . .
Disassembly  . . . . . . . . . . . . . . . . . . . . .
Reassembly  . . . . . . . . . . . . . . . . . . . . .
6A-26
Section 6B - Closed Cooled Models
Torque Specifications  . . . . . . . . . . . . . . . .
6B-2
6B-2
6B-2
6B-2
6B-2
6B-2
6B-2
6B-3
6B-3
6B-3
6B-4
6B-5
6B-6
6B-6
6B-6
Thermostat . . . . . . . . . . . . . . . . . . . . . . . . .
6B-10
6B-10
6B-11
6B-12
6B-13
6B-13
6B-13
6B-13
6B-14
6B-14
6B-14
6B-16
6B-17
6B-19
6B-20
Lubricants / Sealants / Adhesives  . . . . .
Specifications . . . . . . . . . . . . . . . . . . . . . . .
Closed Cooling System Capacity  . . .
Coolant Specification . . . . . . . . . . . . . .
Thermostat  . . . . . . . . . . . . . . . . . . . . . .
Pressure Cap Rating . . . . . . . . . . . . . .
Description  . . . . . . . . . . . . . . . . . . . . . . . . .
Coolant Recommendations . . . . . . . . . . .
Maintaining Coolant Level  . . . . . . . . . . . .
Pressure Cap Maintenance . . . . . . . . . . .
Heat Exchanger Repair  . . . . . . . . . . . . . .
Testing Closed Cooling System  . . . . . . .
Testing Coolant for Alkalinity  . . . . . . .
Pressure Testing System  . . . . . . . . . .
Testing for Cylinder Head
Removal   . . . . . . . . . . . . . . . . . . . . . . . .
Testing  . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation . . . . . . . . . . . . . . . . . . . . . . .
Changing Coolant  . . . . . . . . . . . . . . . . . . .
Closed Cooling Section . . . . . . . . . . . .
Change Intervals  . . . . . . . . . . . . . . . . .
Draining Instructions  . . . . . . . . . . . . . .
Cleaning System . . . . . . . . . . . . . . . . . . . .
Closed Cooling Section . . . . . . . . . . . .
Seawater Section . . . . . . . . . . . . . . . . .
Filling Closed Cooling Section  . . . . . . . .
Auxiliary Hot Water Heater Installation  .
Heat Exchanger Bracket Hardware  . . . .
Heat Exchanger Hose Connections . . . .
Closed Cooling System
Gasket Leak . . . . . . . . . . . . . . . . . . . . .
Testing Heat Exchanger  . . . . . . . . . . .
Testing Pressure Cap  . . . . . . . . . . . . .
6B-7
6B-8
6B-8
Water Flow Diagram  . . . . . . . . . . . . . . . .
MCM / MIE Models  . . . . . . . . . . . . . . .
Draining Diagram
6B-21
6B-21
(Coolant Section of System) . . . . . . . . . .
6B-22
90-861327--1
OCTOBER 1999
Page xiii
Product Specification
CategoriesMercury MerCruiser Manuals
Tags,
Model Year1998, 1999, 2000, 2001
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Mercury MerCruiser Engines Service Manual Number 24 GM V-8 305 CID 350 CID SKU UPC Model
Fernando Woll on Dec 09, 2014. Boat Engine

Great performance engine.
Class 1

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