Service Policy

Our After Sales & Service Team is dedicated to give our customers the best after-sales service experience. Starting from PDI (Pre-Delivery Inspection) until making sure that our BONLUCK Buses & Coaches are safe and sound one the road.

A periodical check and follow up shall be made to make sure drivers, buses and operators are getting the best results for their BONLUCK buses. 

Through our regional offices and representations around the world, BONLUCK customers are able to take advantage of the major component service network which is already established for service, repairs and warranty claims of these components.

For more information, contact us at:

Service & Preventive Maintenance During the Warranty Period

It is advised to perform the preventive maintenance including complete oil change and greasing, when you purchase a new BONLUCK bus.

All services should record it in the appropriate place in the Warranty Booklet to be your maintenance reference for the vehicle.

This initial services will be done at two stages:
– Stage one will be carried out 4 weeks after your bus delivery, or after a maximum of 10,000 km.
– Stage two will be carried out within 3months after the first Warranty Service

In order for BONLUCK Bus & Coach Warranty to apply, you must maintain the bus in accordance with BONLUCK Bus & Coach Preventive Maintenance Program and continually record all the service occasions.

We also advice to perform the following procedures before you start operating your vehicle (If needed):
– Complete oil change for the bus (engine, differential and gearbox)
– Complete re-greasing for the vehicle
– Complete caliber for vehicle doors

Driveline Warranty

As per the warranty policy the driveline warranty is valid for components given below:


  • Cylinder block
  • Cylinder head
  • Cylinder liners & pistons
  • Valve mechanism
  • Timing mechanism
  • Crank mechanism
  • Conn. Rods & bearings
  • Oil pump + pickup pipe
  • Oil cooler
  • Oil filter housing
  • Preheating device
  • Internal pipes
  • Internal gaskets
  • Internal seals
  • Flywheel and casing
  • Exhaust brake
  • Exhaust/Intake manifold
  • Intercooler
  • By-pass valve Fan
  • Coolant pump
  • Radiator
  • Thermostat & housing
  • Electronic control unit
  • Fuel injection
  • Pump* + coupling and feed pump
  • Injectors
  • Turbocharger


  • Clutch housing
  • Gearbox casing
  • Shafts and gears
  • Bearings
  • Synchro cones
  • Hubs
  • Sleeves
  • Internal pipes
  • Internal seals
  • Splitter unit
  • Range unit
  • Internal gear selector
  • Oil pump
  • Oil cooler
  • PTO
  • Automatic transmission
  • Transfer gearbox

Drive axles

  • Propeller shafts
  • Intermediate bearing
  • Universal joints
  • Front/rear axle casing
  • Driving gears
  • Differential casing
  • Differentials gears
  • Differential bearings
  • Differential lock
  • Half shafts
  • Hub an hub
  • Reduction gears

Clearly, components not stated in this list are not covered by the driveline warranty. The scope and conditions of the warranty were explained previously.

Normal Wear and Tear and Maintenance

As per the warranty policy BONLUCK Bus & Coach warranty conditions do not include normal wear and tear and maintenance of the vehicle. The climate, driving conditions, driving behavior, the mileage covered, etc., all influence the service life of the items in question

Following are few examples of normal wear and expendable parts:
– Oils, grease, coolant fluid, anti-freeze
– Filters – oil, fuel, are coolant etc.
– Exhaust system
– Drive belts – fan, alternator etc.
– Bulbs and fuses
– Wiper blades
– Clutch plates
– Brake linings
– Desiccant for air dryer

Following are few examples of adjustment procedures which can be regarded as normal maintenance:
– Valve adjustment
– Maintenance and adjustment of injectors
– Adjustment and overhaul of the compressed-air system (for example, off- loading pressure, level valves, brake control valves… etc.)
– Vehicle front end and power steering adjustment
– Tightening of wheel nuts, springs etc.
– Wheel bearing and axle adjustment
– Greasing

Other examples of repairs & adjustments are the doors, hatches, locks… etc.

Warranty Booklet

This warranty Booklet is a valuable document which should be thoroughly studied and well looked after.

It would be advisable to download this document and always keep it in the vehicle binder once your BONLUCK bus is delivered to you.

This would simplify your service visits and there will be no uncertainties regarding the Warranty period or the treatment and care during the Warranty period.

Among other things, the various service occasions that are included in BONLUCK Bus & Coach Preventive Maintenance Program are recorded in the Warranty Booklet.

The proper care in accordance with the instructions in this Warranty Booklet is a precondition for ensuring that BONLUCK Bus & Coach Warranty terms are to apply.

If you have any questions concerning BONLUCK Bus & Coach Warranty conditions or your BONLUCK bus itself, you are more than welcome to contact your nearest BONLUCK Bus & Coach regional office, or you can contact our regional office in charge of your location for more information.