z Amount of Anti-freeze The anti-freeze, 33 ~ 50% of the whole coolant, is always to be used to prevent the cooling system from the corrosion. And in the winter the amount of anti-freeze shown in the following table should be used in accordance with the ambient temperature. As the individual freezing points corresponding to the proportions of antifreeze in the table are subject to change slightly according to the kind of antifreeze, you must follow the specifications provided by the antifreeze manufacturer. Any coolant loss due to engine operation must be replenished. But adding fresh water for coolant tends to lower the content of anti-freeze.
Always replenish the coolant with a mixture of antifreeze and water, and keep the proper the content of anti-freeze (33 ~ 50%). 2.3.24. Valve clearance adjust procedure z After letting the #1 cylinder's piston come at the compression top dead center by z Loosen the lock nuts of rocker arm adjusting screws and push the feeler gauge turning the crankshaft, adjust the valve clearances. of specified value between a rocker arm and a valve stem and adjust the clearance with adjusting screw respectively and then tighten with the lock nut. z As for the valve clearance, adjust it when in cold, as follows.
DL06 Diesel Engine Technical Information 36 Ambient Temperature (°C) Cooling water (%) Anti-freeze (%) Over –10 -10 -15 -20 -25 -30 -40 85 80 73 67 60 56 50 15 20 27 33 40 44 50 Engine model Intake valve (X) Exhaust valve (X) DL06 0.3 mm 0.4 mm