LiftMaster MGJ MGJ S-SERIES Manual - Page 8

MAINTENANCE SCHEDULE Check at the intervals listed in the following chart. ITEM Drive Chain Sprockets Fasteners Manual Disconnect Bearings & Shafts PROCEDURE Check for excessive slack. Check & adjust as required. Lubricate.* Check set screw tightness Check & tighten as required Check & Operate Check for wear & lubricate EVERY 3 MONTHS EVERY 6 MONTHS EVERY 12 MONTHS ● ✔ ● ✔ ● ✔ ● ✔ ● ✔ ✳ Use SAE 30 Oil (Never use grease or silicone spray). ✔ Repeat ALL procedures. ■ Do not lubricate motor. Motor bearings are rated for continuous operation. ■ Inspect and service whenever a malfunction is observed or suspected. ■ CAUTION: BEFORE SERVICING, ALWAYS DISCONNECT OPERATOR FROM POWER SUPPLY. HOW TO ORDER REPAIR PARTS & CUSTOMER SUPPORT INSTALLATION AND SERVICE INFORMATION ARE AVAILABLE 5 DAYS A WEEK CALL OUR TOLL FREE NUMBER - 866-522-9007 HOURS 8:00 TO 5:00 p.m. Eastern Standard Time) MONDAY Through FRIDAY 8