Holder C-Trac 4.74 - Manual (Page 160)

Operating instructions
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C 4.74
Maintenance schedule
Interval Checks and services
Maintenance every 1000 hours Check engine valve clearances
Check the battery
Check V-belt tension and condition
Change the fuel filter
Clean/replace the fuel pump strainer
Lubricate the cardan joint nipples
Maintenance every 1500 hours Change hydraulic oil for traction and working hydraulics
Clean the filter for the traction and working hydraulics return line
and change it, if necessary.
Check / clean for suction filter for working hydraulic system.
Maintenance every 3000 hours Check the injection nozzles
Change the toothed belt
Annual maintenance Change the brake fluid of the foot brake
Periodic maintenance