Northern 999320 Owner'S Manual Download Page 8

Page: 8 / 11

Page of 11

Carbon Brushes

Inspect the two carbon brushes at least once every two months. (Nominal brush life is 200 hours).

Worn brushes will result in loss of power, cause the motor to run hot and irreparably
damage the armature’s commutator.

1.  Disconnect unit from power supply.
2.  Unscrew both brush caps and pull out carbon brushes.
3.  Replace brushes if less than 6 cm in length.

Summary of Contents for 999320

Page 1: ...WNER S MANUAL WARNING Read carefully and understand RULES FOR SAFE OPERATION and instructions before operating Failure to follow the safety rules and other basic safety precautions may result in serio...

Page 2: ...d for any application other than that for which it was designed If you have any questions relative to a particular application DO NOT use the machine until you have first contacted Northern Tool Equip...

Page 3: ...ds may cause a fire and increase the risk of electric shock Grounded tools must be plugged into an outlet properly installed and grounded in accordance with all codes and ordinances Never remove the g...

Page 4: ...Use the correct power tool for your application The correct power tool will do the job better and safer at the rate for which it was designed Do not use the power tool if the switch does not turn it...

Page 5: ...he proper thickness for the length See table below Cord length Cord size AWG Up to 10 m 33 ft 16 Up to 15m 50 ft 14 Up to 30m 100 ft 10 6 Before plugging in make sure that the switch lock is OFF CAUTI...

Page 6: ...Check piston and housing for accumulated dirt and iron filings that maybe jamming the piston If after cleaning piston still does not automatically retract when fully extended the piston itself may be...

Page 7: ...that pump case is full to the brim If oil level is too low top up with 20 weight hydraulic oil with anti foam and anti abrasion properties 7 After topping off extract air from system by gently tilting...

Page 8: ...s Nominal brush life is 200 hours Worn brushes will result in loss of power cause the motor to run hot and irreparably damage the armature s commutator 1 Disconnect unit from power supply 2 Unscrew bo...

Page 9: ...Page of 11 9 DIAGRAM PARTS LIST...

Page 10: ...case oil seal 54 Stator coil 17 Snap ring 55 Motor housing 18 Ball ring 56 Sleeve 19 Seal washer 57 Foot 20 Oil plug M 10 8 58 Cat bolt M5 80 21 Piston oil seal rear 59 Set screw M4 5 22 Piston key 60...

Page 11: ...lica from bricks and cement and other masonry products and arsenic and chromium from chemically treated lumber Your risk from these exposures varies depending on how often you do this type of work To...