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Old 31-01-2021, 14:21   #16
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Re: Volvo md30A typical failures/weak spots, parts to take on a world circum

MD30 valve adjust as follows:
- engine cold
- firing order- 1,3,4,2
- clearance, both inlet and exhaust- .4mm or .016”

Remove the valve cover and rotate the engine clockwise (viewing from the front) until both valves on #1 cylinder are “rocking”....ie. Exhaust just closing and intake just opening, both valves moving at this point. #1 cylinder is on overlap stroke at this point. Then rotate the crank one full turn more. This puts #1 at TDC compression. Adjust #1 cylinder valves at this point.
Rotate the crank 1/2 turn and adjust #3-
Rotate the crank another 1/2 turn and adjust #4
Rotate the crank another 1/2 turn and adjust #2

Coolant capacity is 15 liter without a hot water heater. Add extra for hot water heater and hose length. Mix 50/50 good quality Diesel engine antifreeze with distilled water. Change interval depends on the antifreeze, but should be every 3-4 yrs.
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