2008 21 500XOPTRS
B. BRISTLE REPLACEMENT
Currently, two types of vertical digger bristles are available from TYMCO:
1. Polypropylene
2. Steel
These two types are not interchangeable without replacing the gutter broom spring.
Polypropylene bristles (Part No. 500393) require Spring No. 5010232: whereas steel
bristles (Part No. 500392) require Spring No. 5010960.
To replace bristles, use the following procedure:
1. Lower gutter broom; turn sweeper engine off.
2. Remove bolts from bristle segments one segment at a time. TYMCO segments
use two course threaded 5/8" bolts to lock segment to disc. No nut is used on
the bottom side. Also, a small 3/8" bolt is used to give support to center of each
segment. There is a nut used for this center support bolt. Remove and insert it
into the new segment.
3. Available for the sweeper is a set of segment installation clamps (1) (see Section
TK - Parts & Service Manual) which look similar to vice clamps but the ends have
round dowel pins welded on. The pin on the lower jaw of the clamp inserts into
the center support hole on the new bristle segment. The pin on the upper jaw
inserts into the center support hole on the gutter broom disc. Lock the clamp in
place to hold segment which now allows the segment holes to be aligned with the
disc holes and the bolts to be installed with ease.
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