Craftsman 919.17673g, 919.17683 Maintenance, Air Compressor, Air Filter nspection and Repmacement

NOTE

W'_TERWILL CONDENSE IN THE A_R TANK. mFNOT DRAtNED_ WATER W_LL CORRODE AND WEAKEN THE AR TANK; CAUSING A R_SK OF AIR TANK RUPTUREo

1!. With tank pressure at approximately 20 psi., open the drain cock (key 43, pg. 14) and atlow moisture to drain. Turn drain T-handle counterclockwise to open. The drain cock is located under the outfit near the teg without the wheefs. (See pg. 6.)

If the drain cock valve is plugged, release all air pressure. The valve can then be removed, Scleaned, and reinstalled.

12.After the water has been drained, close the drain

cock (turn clockwise). The air compressor can now be stored.

MAINTENANCE

UNF CYCLES AUTOMATtCALE#f WHEN POWER _SON. WHEN DOING MA_NTENANCE_ YOU MAY BE EXPOSED TO VOLTAGE SOURCES, COMPRESSED A_R OR MOVING PAR'TS.PERSONAL

_NJURtES CAN OCCUR. BEFORE PERFORMING MAINTENANCE OR REPAIR UNPLUG THE UNiT AND BLEED OFF ALL A_R TANK PRESSBREo NEVER OPERATE THE UNiT WITH THE BELT GUARD REMOVED°

Air Compressor

A clean air compressor runs cooler and provides longer service. Clean or blow off fins and any other parts of the air compressor that collect dust or dirt. Do not place rags, containers or other material on or against the venti- lation openings in the belt guard. Adequate ventilation is necessary to maintain proper air compressor operating temperature.

Air Filter - _nspection and Repmacement

NOTE

Keep the air filter clean at afl times. Do not oper- ate the compressor with the air filter removed.

A dirty air filter will not allow the compressor to operate at full capacity. Before you use the compressor, check the air filter to be sure it is clean.

ounces.) Under extreme winter conditions use SAE

10W. Multi-viscosity oil (10W30) will leave carbon

deposits on critical components which wil! reduce per- formance and compressor life.

Check Valve - Replacement

1.Release air pressure from the air tank.

2.Loosen the top and bottom tube nuts and remove the outlet tube.

3.Unscrew the check valve (turn counter-clockwise) using socket wrench.

4.Check that the valve disc moves freely and that the

spring holds the disc in the upper, closed position. The check valve may be cleaned with a solvent such as paint thinner or carburetor cleaner.

5.Apply sealant to the check valve threads. Reinstall the check valve (turn clockwise). Do not over tighten.

6.Replace the outlet tube and tighten top and bottom tube nuts.

If it is dirty, repIace it with a new filter. The filter may be removed by using a pair of needle nosed pliers or a

screwdriver. Pull or pry out the old filter. Push in the new air filter.

OH - Checking and Changing

Overfilling with oim win cause premature compressor failure. Do not overfill.

Check oil tevel in the crankcase daily. Remove the oil fill plug (Key no. 81, pg. 15). The oil level should be even with the top of the fill hole and must not be allowed to be lower than %" from the top (6 threads) at any time. It is recommended that the oil be changed after every 100 hours of operation. To drain the oiI, remove the oil drain ptug and collect the oil in a suitable container. Be sure to replace the ptug securely before adding new oil. Use a special compressor oil such as Sears 9q6426 or SAE 20-20W SF motor oil. (Crankcase oil capacity is 16 fluid

Safety Valve - _nspection

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_F THE SAFETY VALVE DOES NOT WORK PROPERLY OVERoPRESSUR_ZAT_ON MAY OCCUR, CAUSING A_R TANK RUPTURE OR EXPLOSION. OCCASIONALLY PULL TNE R_NG ON THE SAFETY VALVE TO MAKE SURE THAT TNE SAFETY VALVE OPEN° ATES FREELY. _F THE VALVE _SSTUCK OR DOES NOT OPERATE SMOOTHLY, IT MUST BE REPLACED W_TN A VALVE HAVING THE SAME PRESBURE R_[_NG_

Motor

The motor has a manual thermal overload protector. If

the motor overheats for any reason, the overload protec- tor will shut off the motor. The motor must be altowed to

cool down before restarting. _Jrn the unit off. To restart, depress the red reset button located on the end of the motor and turn the unit on.

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