John Deere 318 - Manual (Page 285)

Section 240
ELECTRICAL CHECKOUT, OPERATION
AND DIAGNOSIS
Contents
Page
Group 05—Electrical System Checkout
Before You Start . . . . . . . . . . . . . . . . . 240-05-1
Dash Lamp Circuit Check . . . . . . . . . . . 240-05-1
Starting Circuit Check . . . . . . . . . . . . . . 240-05-2
Ignition Circuit (Spark) Check . . . . . . . . . 240-05-2
PTO Clutch and Lamp Check . . . . . . . . 240-05-3
Brake Neutral Start Check . . . . . . . . . . . 240-05-3
Transmission Neutral Start Check . . . . . . 240-05-4
PTO Neutral Start Check . . . . . . . . . . . . 240-05-4
Seat Switch Check for PTO . . . . . . . . . . 240-05-4
Seat Switch Check for Ignition . . . . . . . . 240-05-5
Hour Meter Check . . . . . . . . . . . . . . . . 240-05-5
Lighting Check . . . . . . . . . . . . . . . . . . 240-05-5
Operator Complaint Not Identified . . . . . . 240-05-6
Group 10—Electrical Schematics
Single PTO . . . . . . . . . . . . . . . . . . . . . 240-10-3
Dual PTO . . . . . . . . . . . . . . . . . . . . . . 240-10-4
Group 15—Component Location and Operation
Electrical Component Location . . . . . . . . 240-15-1
Theory of Operation
Starting Circuit . . . . . . . . . . . . . . . . . 240-15-2
Ignition Circuit . . . . . . . . . . . . . . . . . 240-15-4
PTO Circuit . . . . . . . . . . . . . . . . . . . 240-15-6
Charging Circuit . . . . . . . . . . . . . . . . 240-15-8
Engine Oil Pressure Lamp Circuit . . . 240-15-10
Group 20—Electrical System Diagnosis
About This Group . . . . . . . . . . . . . . . . 240-20-1
Verify System Grounds . . . . . . . . . . . . . 240-20-1
Battery Tests . . . . . . . . . . . . . . . . . . . . 240-20-1
Dash Lamp Circuit Tests . . . . . . . . . . . . 240-20-4
Starting Circuit Tests . . . . . . . . . . . . . 240-20-10
Ignition Circuit Tests . . . . . . . . . . . . . . 240-20-14
PTO Clutch and Lamp Tests . . . . . . . . 240-20-21
Brake Neutral Start Safety Switch Test . 240-20-25
Transmission Neutral Start Safety Switch
Test . . . . . . . . . . . . . . . . . . . . . . . 240-20-26
PTO Neutral Start Safety Switch Test . . 240-20-26
Seat Switch Test For PTO Time Delay . 240-20-26
Page
Seat Switch Test For Ignition Time
Delay . . . . . . . . . . . . . . . . . . . . . . 240-20-27
Hour Meter Circuit Test . . . . . . . . . . . . 240-20-27
Lighting Test . . . . . . . . . . . . . . . . . . . 240-20-28
Group 25—Electrical System Component Tests
and Adjustments
Before You Start . . . . . . . . . . . . . . . . . 240-25-1
Key Switch Test . . . . . . . . . . . . . . . . . 240-25-1
Circuit Breaker Test . . . . . . . . . . . . . . . 240-25-1
Starter Tests . . . . . . . . . . . . . . . . . . . . 240-25-2
Alternator and Regulator/Rectifier Tests . . 240-25-5
PTO Clutch Adjustment Check . . . . . . . . 240-25-7
System Short Circuit Tests
20-Amp Fuse . . . . . . . . . . . . . . . . . . 240-25-8
2 or 3-Amp Fuses . . . . . . . . . . . . . . . 240-25-9
TM1590 (17MAY95)
240-1
316, 318 & 420 Lawn and Garden Tractors
020895
240