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Triumph Modern Classics

Triumph Bonneville T120 Ace Maintenance Schedule

Maintenance schedule and service interval for the Triumph Bonneville T120 Ace

This is the maintenance schedule with associated service intervals for the Triumph Bonneville T120 Ace motorcycles.

It’s very similar to those for other motorcycles with similar engines in the Triumph Modern Classics.

This maintenance schedule applies to the following model:

  • 2019 Triumph Bonneville T120 Ace

Maintenance Schedule for Triumph Bonneville T120 Ace

The following is the list of maintenance operations and to be done on this motorcycle with a distance or time interval — whichever comes earlier.

There are two kinds of service interval: every a) distance or b) time period. In each case, it’s the earlier of the two that’s most important.

Part of the below table includes checks you should do every day.

Operation DescriptionEvery500
(800)
1 month
Year10,000 and 30,000
(16,000 and 48,000)
20,000 (32,000)40,000
(64,000)
Lubrication
Engine – check for leaks Day
Engine oil – replace
Engine oil filter – replace
Fuel System and Engine Management
Fuel system – check for leaks, chafing etc.
Throttle body plate (butterfly) – check/clean
Autoscan – Carry out a full Autoscan using the
Triumph Diagnostic Tool (print a customer copy)
Air cleaner – replace
Fuel filter – replace
Throttle bodies – balance – 1200 cc engines only
Fuel hoses – replace Every 4 years regardless of mileage
Evaporative loss hoses* – replaceEvery 4 years regardless of mileage
Ignition system
Spark plugs – check
Spark plugs – replace
Cooling system
Cooling system – check for leaks Day
Cooling system – check coolant hoses for
chafing/cracks/damage. Replace if necessary.
Coolant level – check/adjustDay
Coolant – replaceEvery 3 years, regardless of mileage
Engine
Clutch cable – check function and adjust as
necessary
Day
Valve clearances – check
Camshaft timing
Wheels and Tires
Tire wear/tire damage – checkDay
Tire pressures – check/adjust Day
Wheels – inspect for damageDay
Wheels – check wheels for broken or damaged
spokes and check spoke tightness (models with
spoked wheels only)
Day
Wheel bearings – check for wear/smooth
operation
Steering and Suspension
Steering – check for free operationDay
Front and rear suspension – check for damage/
leaks/smooth operation
Day
Fork oil – replace
Steering head bearings – check/adjust
Steering head bearings – lubricate
Brakes
Brake pads – check wear levelsDay
Brake master cylinders – check for fluid leaks
Brake calipers – check for fluid leaks and seized
pistons
Brake fluid levels – checkDay
Brake fluid – replaceEvery 2 years regardless of mileage
Drive Chain
Drive chain slack – check/adjust Day
Drive chain – wear checkEvery 500 miles (800 km)
Drive chain – lubricateEvery 200 miles (300 km)
Drive chain rubbing strips – check
Electrical
All lights, instruments and electrical systems –
check/adjust
Day
General
Instruments, chassis ECM (if equipped) and
engine ECM – check for latest calibration
download using the Triumph diagnostic tool
Fasteners – inspect visually for securityDay
Bank angle indicators – check for wearDay
Side stand/Center stand – lubricate/check
operation
Day
Side stand pivot pin – clean/grease
Carry out all outstanding Service Bulletin and
warranty work
Carry out road test
Complete the service record book and reset the
service indicator (if equipped)

* Evaporative system fitted to models for certain markets only.

General information about the Triumph Bonneville T120 Ace

The 2019 Triumph Bonneville T120 Ace is purely a styling exercise. Underneath all the custom parts is a standard Bonneville T120 Black. That means you get the 1200cc High Torque engine, along with modern electronics ranging from ride-by-wire to a USB charging outlet. However, one could argue that the shorty fender from the Triumph accessory catalog is functional.

A 25.5° steering-head angle and 18-inch front wheel give it 4.14-inches of trail and an eager demeanor in the curves in keeping with its stoplight-racing roots. A 17-inch rear rim rounds out the rolling chassis, and of course, the look of the laced wheels accentuate the dated panache of the bike and mount a 100/90 up front and a 150/70 around back.

Manual for the Triumph Bonneville T120 Ace

Triumph Bonneville T120 Ace Maintenance Schedule Screenshot From Manual

The above maintenance schedule comes directly from the user’s manual for the Triumph Bonneville T120 Ace, which is available on the Triumph website.