Inspect all pivot points, hinges, latches, etc.  Apply lubricant where needed, wiping off excess.
Check all locking devices.  Lubricate as required.
Inspect center gate support rollers and lubricate as required.
Clean roller track of any debris.
Check bolts, fasteners, and mounting hardware.  Tighten or adjust as necessary.
Check for any obstructions that retard full swing or movement of the gate.
Check hold-open devices for proper operation.  Lubricate as required.
Clean surrounding area, record results and findings and report any needed repairs or operational adjustments.

Obtain and review manufacturer's instructions.  Follow manufacturer’s instructions or procedures if different to these instructions or procedures.
This work should be scheduled at non-peak hours.
Notify affected personnel before performing PM (alarmed or security entrances).
Post "out of service" signs and/or barricades, as appropriate.

Standard and Phillips head screw drivers-various sizes; Pliers-vise grip (2), slipjoint, needlenose, diagonal; cutting pliers, side cutters; Ball peen hammer; Hack saw and spare blades; 3/8' drive socket set and ratchet; Small set of Allen wrenches; Assorted center punches, drift punches, and steel chisel; 12' measuring tape; Crescent wrenches 4" to 8";  Open and box end wrenches ¼" to ¾"; File; Pipe wrenches to 14"; Small level and square; Pocket knife; Flashlights; Grease guns and oilers; Wire brush; Extension cord and inspection lights; Various cleaning tools - brushes, scrapers, etc; Emery cloth.
"Out of Service" signs
Cleaning equipment and materials. 
Ladder.  Check ladder for defects. Do not use defective ladders.
Lubricants. 
Consult the MSDS for hazardous ingredients and proper PPE.
Gloves.