APE November 2020 | Page 16

EXPERT ADVICE
In winterizing a paver ' s engine , there are considerations surrounding DEF ( Diesel Emissions Fluid ). It is important to note that DEF freezes at 12 ° F ( -11 ° C ). Bolick cautioned that DEF should be stored in temperatures between 40-80 ° F ( 5-27 ° C ) to maintain shelf life . Temperatures above 86 ° F ( 30 ° C ) he said will cause DEF to break down into ammonia . DEF may be stored in the machine ’ s tank for up to four months . If the machine is stored or used above 86 ° F ( 30 ° C ), the DEF storage life will be reduced . It is always advised to purchase DEF in a container size which can be consumed in a few months . With winterizing the asphalt paver engine there are other tips to follow . “ Check the air filter and clean or replace the air filter elements if needed ,” stated Bolick . “ Check the engine oil level and fill if needed . Ensure the fuel tank is full to prevent condensation in the fuel tank . I ' d add cold weather additive to the fuel when appropriate .

If the paver will sit idle over winter , start it up once per month and let it warm up completely .

Perform specific gravity test on engine coolant . Drain and replace or fill with antifreeze mixture to prevent freeze damage if needed . You ' ll want to disconnect the battery and store inside in a cool , dry place ; and ensure breakers are in the OFF position .” Bolick continued : “ Cover the exhaust and intake filter . Be sure to seal the exhaust cover with tape to prevent moisture from entering , especially if storing outside .” Should your paver require any repairs — or if you ’ re looking at refurbishment or reman — winter is the perfect time to make those repairs without worrying about unscheduled downtime . If the paver will sit idle over winter , start it up once per month and let it warm up completely . While it can be difficult to fit necessary maintenance or monthly startups into busy schedules , when it comes time to hit the first job in spring , taking these steps will help ensure a smooth season launch — and a smooth road ahead .
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