Graco Plural Component Mixer 248831

Warning: This procedure requires trained personnel with PPE!

Power supply wires disconnected

Two air lines disconnected from alternator

Top nut removed and bottom nut loosened

Alternator slid up and off bottom nut

Four screws removed to separate alternator housings

Turbine disconnected from board

Turbine removed and repaired as per turbine kit manual 308034

Warning: This maintenance check requires trained personnel with PPE!

Fill metering valves A and B packing nuts (627) with throat seal liquid (TSL)

Tighten 1/4 turn after nut contacts packings; about 145–155 in/lbs (16–18 N•m)

Check packing nut tightness after first hour of operation, again after 24 hours, then check as needed (when TSL discolors or seeps over packing nut). Also check tightness whenever unit is transported.

Did you replace metering valve packings every other time that pump packings are replaced?

Sign off on the metering valve maintenance

Check equipment daily. Repair or replace worn or damaged parts immediately.

Check air filters daily. Drain and clean as necessary.

There are 2 air filters on the unit: the 5 micron air manifold filter (518) and 40 micron pump air filter (8). Check filters daily and replace element as needed.

WARNING: Removing the bowl of a pressurized air filter could cause serious injury. Do not service air filter until air line is depressurized.

Close main air shutoff valve on air supply line and on unit. Depressurize air line.

Remove air manifold cover (42). Fig. 3