Tightening The Arm And Column; Adjusting The Column Tube - Craftsman 315.220381 Owner's Manual

TIGHTENING THE ARM AND COLUMN
See Figure 19.
There should be no play, vertical or horizontal, in the
arm relative to the column. If you can move the arm
up, down or sideways when )he arm lock is unlocked,
use the followingsteps to tighten the arm.
Note: The arm should pivot only when the arm lock
knob is unlocked and pulled forward to com-
press the spring.
• Using a phillipsscrewdriver, remove the rear cover
screws (2) and rear cover from the back of the arm.
This uncovers the belts on the column.
• Tighten the top two belts evenly until the arm is firm
and there is no verticalor horizontal movement.
• Also check the two bettom hex nuts. It is not
necessary to tighten them as tight as the upper
bolts. However they should be tightened even and
snug.
• Replace the rear cover and rear cover screws.
• Tighten screws securely.
REAR
COVERSCREWS
REAR
COVER
HEXBOLT(2)
ADJUSTING THE COLUMN TUBE
See Figures 20A - 20D.
The purpose of this procedure is to check whether the
inner column tube is snug in the housing and to
remove any looseness. Looseness could resultin a
poor cut or difficultyin elevating the carriage. The
column tube is the upper portion of the column and
extends from the column support.
Note: It is criticalto remove all looseness with this
procedure. If this procedure is not done cor-
rectly,following adjustments will be wrong and
could result in machine damage.
This procedure checks beth the elevating actionand
the rotating action. If a check does not show loose-
ness, do not perform the adjustment.
• If the arm is not at O"(straight forward), release the
arm lock knob, set the arm, and re-lock the arm
lock knob.
• Elevation check:To check the elevation movement,
place your hand under the frontof the radial arm.
Press upward on the radial arm. There shouldbe
minimal play between the column tube and the
column support.The whole assembly shouldmove
as one. See Figure 20A.
COLUMN ARM
TUBE
COLUMN
SUPPORT
Fig. 20A
HEXNUT(2) Fig. 19
€IulFrsNlU(' RADIALSAW315.220_1 28