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Date of Origin – 02/24/11
Updated – 02/03/20
MAINTENANCE SCHEDULE - TENDER
* Alignment and Suspension check *
1) Initial alignment check 90 days for Air-Ride
2) Check suspension for damage (cracks, loose or missing fasteners)
3) Check air-ride suspensions for conditions of bushings, air leaks and shock absorbers
* Wheels, Rims, Tires *
1) Check all wheel nuts for tightness and should be torqued to 450 to 500 ft-lbs (dry)
after 50 to 100 miles of service - weekly thereafter
2) Check tires for cuts and abrasions.
3) Check tire inflation daily.
a.)Tire Manufacturers require weekly tire inflation by gauge
b.)Tire rotation every 30,000 miles of trailer usage
4) Check wheel stud condition for stripped & damaged threads (if damaged see owners manual)
Reference Manual for:
* vendor maintenance information concerning loading, inflation-maintenance procedures
* replacing damaged components, part number and type.
5) Confirm bearing end-play and change hub lubricant every 100,000 miles or during each
annual inspection
* target reading 0.001 – 0.005” range required, dial indicator measurement
* also confirm bearing end-play to support long tire life
* Lights, Reflective Devices, Brakes and Electrical controls *
1) Check and clean all lamps, reflectors and conspicuity tape.
2) Check 7-way electrical connection.
3) Check air brake glad hands for cracked housing and for rubber washer damage.
4) Check air hoses and air lines for cracking and chafing.
5) Check the operation of brakes. Check stroke indicators on auto slacks for proper adjustment.
6) Drain moisture from the air brake system by opening the drain cocks on air tanks.
7) Check ABS warning lamp for system status.
* FIFTH WHEEL AND KING PIN *
1) Inspect king pin and its structure on the trailer for damage or unusual wear.
2) Inspect coupling for positive engagement of the fifth wheel and king pin.
3) Inspect for proper lubrication of 5th wheel plate.
* Trailer Body and Structural Components *
1) Visually check trailer body, suspension, sub-frame, upper coupler, etc. for any cracking,
deterioration or of any loose or missing fasteners.
2) Check trailer sides for damage, sharp bends, ripples or missing fasteners.
* Tarp System *
1) Check to be sure the tarp is in serviceable condition.
2) Insure that the latching system is in good working order.
3) Check proper operation of electric tarp system.
Reference Manual for:
*securing tarp prior to travel to prevent damage.
DAILY
WEEKLY
MONTHLY
ANNUALLY
SEMI-ANNUAL
QUARTERLY
MILEAGE/HR
Actual Reading Time Spec Date Initials
DAILY
DAILY
DAILY
DAILY
DAILY
DAILY
DAILY
DAILY
DAILY
WEEKLY
DAILY
DAILY
DAILY
DAILY
DAILY
MILEAGE/HR
DAILY
DAILY
DAILY
WEEKLY
MONTHLY/HR
DAILY
ANNUALLY/100K MI.
Trailer Serial Number
Responsible Facility
Customer Name
In-Service Date
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