Diagnosis, tests and adjustments, Troubleshooting guide, Group 15 – John Deere 318 User Manual
ABOUT THIS GROUP
The step-by-step procedures in this group provide you
with the detailed diagnostic information you will need
to perform a test. Basic diagnostic equipment is used.
It is assumed that you are familiar with the machine
and its steering system components. If you need
additional information, read the theory of operation in
Group 10 or refer to the overall hydraulic schematics
in Section 270, Group 10.
Engine rpm and temperature are critical in most
hydraulic tests. Be sure to follow test specifications
Always start with the first step and follow the
sequence from left to right. Read each step
completely before performing the test.
Upon completing a test or adjustment, check to see
whether the problem is corrected.
NOTE: The 316 has manual steering (gearbox).
The 318 and 420 have power steering
Therefore, all solutions to the symptoms may
not apply to your particular machine.
If the steering system does not operate properly, select the appropriate symptom from the list below.
After selecting the appropriate symptom, go to that step and perform the following checks, tests, or
adjustments in the order shown to isolate and repair the malfunction.
• STEERING WANDER: GO TO
• STEERING SHIMMY: GO TO
• SLUGGISH STEERING RESPONSE: GO TO
• LOST MOTION AT THE STEERING WHEEL: GO TO
• HIGH STEERING EFFORT IN ONE DIRECTION: GO TO
• HIGH STEERING EFFORT IN BOTH DIRECTIONS: GO TO
• WHEELS DO NOT HIT STOP: GO TO
• STEERING EFFORT IS ERRATIC: GO TO
• WHEELS CONTINUE TURNING AFTER STEERING WHEEL IS STOPPED: GO TO
Diagnosis, Tests and Adjustments
316, 318 & 420 Lawn and Garden Tractors