DeWalt D55273 instruction manual See Motor Pulley/Flywheel Alignment under

English

CODE	POSSIBLE CAUSE	POSSIBLE SOLUTION
12	Restricted air intake filter	Clean or replace air intake filter
13	Loose belt	Check belt tension, see Adjusting Belt Tension under
		Maintenance.
14	Engine or pump mounting bolts are loose.	Tighten mounting screws. Torque pump mounting bolt to
		18– 22 ft.-lbs. (24.4–29.8 Nm). Torque engine mounting bolts
		to 18–22 ft.-lbs. (24.4–29.8 Nm). WARNING: Risk of
		bursting. Excessive vibration could weaken the air tank and
		cause it to rupture or explode. Mounting screws must be
		kept tightened.
15	Pump stiffener bracket bolt is loose	Check bolt and tighten if required. Torque pump stiffener
		bracket bolt to 18– 22 ft.-lbs. (24.4–29.8 Nm).	WARNING:
		Risk of bursting. Excessive vibration could weaken the air
		tank and cause it to rupture or explode. Stiffener bracket bolt
		must be kept tightened. Never operate the unit unless
		equipped with the stiffener bracket.
16	Loose pulley	Tighten pulley set screw, torque to 140–150 in.-lbs.
		(15.8–16.9 Nm).
17	Loose flywheel	Tighten flywheel screw, torque to 22–26 ft.-lbs.
		(29.8–35.26 Nm).
18	Carbon build-up in pump	Contact a DEWALT factory service center or a DEWALT
		authorized service center
19	Belt to tight	Check belt tension, see Adjusting Belt Tension under
		Maintenance.
20	Pulley misalignment	See Motor Pulley/Flywheel Alignment under
		Maintenance.

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