Burr King 1400 Series Arm Attachments User Manual
Page 6
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DOC1400-99 06/01
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5. Remove the contact wheel (P/N 702).
6. Loosen the contact wheel clamping screw (P/N 10).
7. Remove the contact wheel guard and platen assembly (P/N 703, 704b, 704a and hardware).
8. Loosen the work support clamping screw (P/N 10).
9. Remove the work support arm and work support
10. Carefully clean and lightly oil the outer diameter of the contact wheel bearing assembly (P/N 701).
11. Assure the clamping screws of the mounting bracket (P/N 1425) are loose then slide the support arm
over the contact wheel bearing assembly until it stops.
12. Position the mounting bracket approximately horizontal and tighten the clamping screws.
13. Install the small drive wheel (P/N 302) on the 5/8 inch contact wheel arbor and secure it using the
flange washer (P/N 1426) and the original contact wheel nut (P/N 727), tighten securely.
14. Install the belt style of your choice (must be 12 inches longer than the standard belt) as follows:
a. route the belt according to figure 1. If your standard machine is a model 960 the process is the
same except only one idler wheel exists on the model 960
b. assure the belt is routed such that the red pinch guards (P/N 1429) protect the pinch points (see
figure 1)
c. tension the belt using the rear wheel handle assembly.
Other 14xx installation instructions:
It may be necessary to adjust the position, angle, or extension length of the 14xx arm assembly. This may
be necessary because of the belt you chose, the condition of your machine, or the angle that you wish the
arm to be at. Do this by:
1. loosening two set screws (P/N 1445) that secure the main pivot bar (P/N 1426) to the mounting
bracket (P/N 1425)
2. rotate the forward portion of the 14xx until it is in a position suitable for your work and, such that the
abrasive belt can be tensioned. Note: It may be necessary to position the pivot bar (see step 12 above)
3. securely tighten the two set crews (P/N 1445) to fix the position of the forward portion of the 14xx
attachment.
Tracking the abrasive belt on the nose wheel is done by using the standard belt-tracking knob of the left
side of the mounted machine. Note: The ½-inch wide small diameter extensions (P/N 1438/1439) has an
additional tracking adjustment located on the left side of P/N 1438. Rotate the adjusting screw CW or
CCW as required to make small tracking adjustments on this assembly. Usually once this adjustment is
performed it is not often again required.
Tips for obtaining the best service from your 14xx attachment
1. Use good quality abrasive belts.
2. Whenever possible use pliant, flex back belts. Doing so will help in blending, particularly in tight
radii, cavities, etc.
3. Use the nose wheel whenever possible as the preferred grinding site.
4. Maintain sufficient but not extreme abrasive belt tension. Normally the mounted machine rear wheel
arm should be pushed back about 4 ratchet clicks past initial belt contact. Note: belts of different
composition behave differently, i.e. a nylon belt will tend to stretch more than a cloth backed belt.
5. When using thick belts such as nylon web types it may be necessary to adjust the pinch guards for
sufficient but not excessive clearance. CAUTION: There should be no more than 1/8 inch
clearance between the moving belt (or wheel) surface and the pinch guard.
6. Assure that the 14xx idlers (P/N 1444) remain serviceable. The idler wheels are made of very tough
urethane (or steel optional) and will provide good service life. They will, however, wear progressively.
If they wear to the point that they are severely coned, tapered, out of round, or simply too small they
need to be replaced. Continued use of badly worn idlers will result in excessive wear to the mounted
machine's wheels since the mounted machine will override the worn idlers and wear excessively.
7. Small diameter nose wheels turn at high revolutions per minute (RPM). In example, a 9/16-inch wheel
will revolve at over 20000 RPM. The nose wheel bearings at designed to operate at this speed,
however, applying high radial or axial loads to the nose wheel will shorten its service life. In general,