14. PERIODIC SERVICE
14-13
SA221/324/424 Operation Manual
1. Inspect the tires for fissures or any other
damages.
2. Use a tire gauge to check the tire air pressure.
3. Adjust the tires to the standard tire air pressure.
(For details, see "1. Tires" on page 12-1.)
■ Check the Power Steering Line
1. Park the tractor safely and securely.
• For details, see "7. Safe Practices for Parking the
Tractor" on page 1-7.
2. Shut off the engine.
3. Chock all the tires safely and securely.
4. Allow the engine to cool down for several
minutes.
5. Check at the lower part and underneath the
tractor.
6. Check for leaks and damages on the power
steering lines and hoses.
■ Check the brake
1. Park the tractor safely and securely.
• For details, see "Safe Practices for Parking the
Tractor" on page 1-7.
2. Shut off the engine.
3. Check all the tires safely and securely.
4. Engage the parking brake. For details, see "6.
Lock and Set the Parking Brake" on page 7-3.
5. Confirm that the parking brake lock holder is
surely applied and the parking brake lock lever is
locked securely.
6. Periodically clean and apply oil to prevent dust or
rust that could interfere with proper operation.
7. Disengage the parking brake.
(A) Brake pedal
(a) 2.9±0.1 in (73±3 mm)
8. Check the free play of the brake pedal.
• The brake pedal free play must be within
2.9±0.1 in (73±3 mm)
9. If the brake pedal is necessary to be adjusted,
contact YOUR LOCAL YANMAR TRACTOR
DEALER for technical assistance.
IMPORTANT
●When checking tire air pressure of liquid filled
tires:
• rotate the tire placing the valve stem on top
position
• the preceding practice prevents the liquid from
escaping through the valve stem
●To prevent tire damage:
• always inflate the tires to less than the
maximum tire air pressure shown on the tire
sidewall
SA221_324_424_OperatorsManual.book 13 ページ ２０１８年６月４日 月曜日 午後５時１９分
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