Porter-Cable 3802L Maintenance, Changing the Blade, Brush Inspection and Replacement

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MAINTENANCE

CHANGING THE BLADE

Use only cross-cutting saw blades. DO NOT use blades with deep gullets as they can deflect and contact the guard

DISCONNECT THE MACHINE FROM THE POWER SOURCE.

NOTE: Use only 12" diameter blades with 1" arbor holes that are rated for 4000 RPM or higher.

1.Loosen the screw (A) Fig. 50 with the supplied wrench (B).

2.Rotate the arbor cover (C) Fig. 51, and lower the guard (D) Fig. 51 to the rear, exposing the arbor screw (E).

3.Remove the arbor screw (E) Fig. 51 by turning the screw clockwise with the supplied wrench, while at the same time, pressing in on the arbor lock (F) Fig. 52. Remove the outside blade flange (G) Fig. 51, and saw blade. Do not remove the inside blade flange.

4.Attach the new saw blade, making certain that the teeth of the saw blade are pointing down at the front, and attach outside blade flange (G) Fig. 51. Check to see that the flats on outside blade flange are engaged with the flats on the arbor shaft.

5.Thread the arbor screw (E) Fig. 51 into the saw arbor by turning the screw (E) counterclockwise as far as possible by hand. Tighten the arbor screw (E) with the supplied wrench while at the same time pressing in on arbor lock (F) Fig. 52.

6.Rotate the arbor cover (C) Fig. 51, and lower the guard (D) to the front. Tighten the screw (A) that was loosened in STEP 3.

A

B

Fig. 50

C

D

G

E

Fig. 51

F

Fig. 52

BRUSH INSPECTION AND REPLACEMENT

BEFORE INSPECTING OR REMOVING BRUSHES, DISCONNECT THE MACHINE FROM THE POWER SOURCE.

Brush life varies, depends on the load on the motor. Check the brushes after the first 50 hours of use of a new machine, or after a new set of brushes has been installed.

After the first check, examine them after about 10 hours of use, until replacement is necessary.

The brush holders (A) Fig. 53, are located on the motor housing opposite each other. Fig. 54, illustrates one of the brushes removed for inspection. When the carbon on either brush (B) is worn to 3/16" in length, or if either spring or shunt wire (C) is burned or damaged in any way, replace both brushes. If the brushes are found serviceable after removing, reinstall them in the same position.

A

C

Fig. 53

B

Fig. 54

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Contents Manual Español Página FrançaiseTable of Contents Important Safety InstructionsSafety Guidelines Definitions California PropositionGeneral Safety Rules Important Safety InstructionsAdditional Safety Rules for Miter Saws Additional Safety Rules for the LaserPower Connections Functional DescriptionExtension Cords ForewordCarton Contents AssemblyAttaching Extension Table and Fence Slide Moving Cuttinghead to the UP PositionMoving Table to the 0 CUT-OFF Position Attaching Dust BAG Locking Switch in the OFF Position OperationFastening Machine to Supporting Surface Starting and Stopping MachineAdjusting Sliding FIT Between Movable Table and Base Adjusting Fence 90 to BladeTable Hazard Zone Adjusting Sliding FenceTilting Cuttinghead for Bevel Cutting Adjusting Chip Deflector Adjusting 0 and 45 Bevel Positive StopsAdjusting Sliding FIT Between Trunnion and Bevel Bracket Adjusting the Tension of Cuttinghead Return SpringAdjusting Sliding FIT Between Cuttinghead ARM and Trunnion Adjusting Downward Travel of SAW BladeAdjusting the Dual Laserloc Lines HOW to Check Laser AlignmentHOW the Lasers Work To Check for Rotational AlignmentDual Laserloc Maintenance To Check for Vertical AlignmentAdjusting Lower Blade Guard Typical Operations and Helpful HintsAuxiliary Wood Fence Cutting AluminumCutting Bowed Material Work Support Extensions TroubleshootingCrown Moulding Other Angles Changing the Blade MaintenanceBrush Inspection and Replacement Service AccessoriesWarranty PORTER-CABLE Limited ONE Year WarrantyCanadian PORTER-CABLE Delta Service Centers
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