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ENGINE DIVISION SERVICE MANUAL
TM 5-4210-230-14&P-1
ENGINE
CARBURETOR MODELS 4150, 4150C,
4150G AND 4150EG
CONTENTS
Subject
Page
GENERAL INFORMATION
CARBURETOR SYSTEMS................................ ................................ ................................ ................................ ....3
Fuel Inlet System................................ ................................ ................................ ................................ ............ 3
Idle System ................................ ................................ ................................ ................................ .................... 6
Main Metering System ................................ ................................ ................................ ................................ ....7
Power Enrichment System................................ ................................ ................................ .............................. 8
Two-Stage Power Valve................................ ................................ ................................ ................................ ..8
Power Valve Modulator................................ ................................ ................................ ................................ ...8
Acceleration Pump System................................ ................................ ................................ ............................. 9
Choke System................................ ................................ ................................ ................................ .............. 10
Throttle Modulator. ................................ ................................ ................................ ................................ ....... 10
(1970-1971 Vehicles Under 6000 Lbs. GVW)
Deceleration Throttle Modulator................................ ................................ ................................ .................... 11
(1973 California and 1974 Thru 1980 Federal Vehicles Over 6000 Lbs. GVW)
Secondary Throttle Operation................................ ................................ ................................ ....................... 12
Governor (Distributor Spinner Controlled) ................................ ................................ ................................ .....12
Electronic Vacuum Modulating Governor System (EVM)................................ ................................ ............... 16
Redundant Throttle Closing Linkage................................ ................................ ................................ ............. 18
Special Tools................................ ................................ ................................ ................................ ................ 18
DISASSEMBLY
Fuel Bowls and Metering Blocks................................ ................................ ................................ ................... 22
Main Body ................................ ................................ ................................ ................................ .................... 24
Throttle Operating Housing................................ ................................ ................................ ........................... 25
Governor Housing ................................ ................................ ................................ ................................ ........ 25
Secondary Diaphragm Assembly................................ ................................ ................................ .................. 26
CLEANING AND INSPECTION
Cleaning................................ ................................ ................................ ................................ ....................... 27
Inspection................................ ................................ ................................ ................................ ..................... 27
REASSEMBLY
Throttle Operating Housing................................ ................................ ................................ ........................... 28
Governor Housing ................................ ................................ ................................ ................................ ........ 29
Main Body ................................ ................................ ................................ ................................ .................... 29
Fuel Bowl and Metering Blocks................................ ................................ ................................ ..................... 31
CGES-125-T Page 1
PRINTED IN UNITED STATES OF AMERICA
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