Power train checkout, operation and diagnosis – John Deere 318 User Manual

Page 351

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Section 250

POWER TRAIN CHECKOUT, OPERATION

AND DIAGNOSIS

Contents

Page

Group 05—Power Train Checkout
Before You Start . . . . . . . . . . . . . . . . . 250-05-1
Transmission Oil Leak Check . . . . . . . . . 250-05-1
Hydrostatic Lever Friction Check . . . . . . . 250-05-1
Transmission Neutral Check . . . . . . . . . 250-05-1
Neutral Return Check . . . . . . . . . . . . . . 250-05-2
Transmission Drive Check . . . . . . . . . . . 250-05-2
Speed Reduction Check . . . . . . . . . . . . 250-05-2
Two-Speed Axle Lever Check (420) . . . . 250-05-3
Differential Lock Check (420) . . . . . . . . . 250-05-3
Operator Complaint Not Identified . . . . . . 250-05-3

Group 10—Theory of Operation
Hydrostatic Transmission Operation . . . . . 250-10-2

Group 15—Diagnosis, Tests and Adjustments
About This Group . . . . . . . . . . . . . . . . 250-15-1
Troubleshooting Guide . . . . . . . . . . . . . 250-15-1
Check Valve Debris Check . . . . . . . . . . 250-15-5
Charge Pump

Pressure Test . . . . . . . . . . . . . . . . . . 250-15-5
Suction Line Check . . . . . . . . . . . . . . 250-15-6

Charge Relief Valve

Check . . . . . . . . . . . . . . . . . . . . . . . 250-15-6
Adjustment . . . . . . . . . . . . . . . . . . . . 250-15-6

Implement Relief Valve

Pressure Test . . . . . . . . . . . . . . . . . . 250-15-7
Check . . . . . . . . . . . . . . . . . . . . . . . 250-15-7
Adjustment . . . . . . . . . . . . . . . . . . . . 250-15-7

Charge Pump Flow Test . . . . . . . . . . . . 250-15-8
Welch Plug Location Check . . . . . . . . . . 250-15-8
Hydraulic Oil Warm-Up Procedure . . . . . . 250-15-9
Steering Valve Neutral Check (318 and

420) . . . . . . . . . . . . . . . . . . . . . . . . 250-15-9

Hydrostatic Lever Friction Adjustment . . 250-15-10
Neutral Return Linkage Adjustment (Early

Models) . . . . . . . . . . . . . . . . . . . . . 250-15-10

Neutral Adjustment (Early Models) . . . . 250-15-13
Neutral and Neutral Return Linkage

Adjustment (Later Models) . . . . . . . . 250-15-14

Page

Two-Speed Axle Lever Linkage Check

(420) . . . . . . . . . . . . . . . . . . . . . . 250-15-17

Differential Lock Linkage Check (420) . . 250-15-17

TM1590 (17MAY95)

250-1

316, 318 & 420 Lawn and Garden Tractors

020895

250

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This manual is related to the following products:

316, 420