Bucket Tooth Inspection And Replacement - Doosan DX140R Shop Manual

BUCKET TOOTH INSPECTION
AND REPLACEMENT
There are several different types of attachment methods for
replaceable bucket teeth. Some of the most common types are
shown in the following drawings.
Bucket teeth are usually replaced in sets but it may sometimes
be necessary to replace individual teeth.
Look for the following indications of wear or damage:
• Lock pins protrude unevenly on one side.
• Lock pins have been worn down so far that they no
longer make full contact through the length of the pin
hole.
• Lock washers or pins show obvious damage or
weakness.
• Wear points on the working surfaces of tooth points -
pits, cracks, chips or craters - are larger than 8 mm to
10 mm (1/3" to 1/2") across.
Figure 1
1. On a routine basis, inspect the bucket teeth to make sure
that tooth wear or breakage has not developed. Do not
allow the replaceable bucket teeth to wear down to the
point that the bucket adapter is exposed. See Figure 1.
2. To replace a tooth (1, Figure 2), use a hammer and punch
to drive the locking pin (2) and lock washer (3) out of the
tooth adapter (4).
3. Once the worn tooth has been removed, use a putty knife
to scrape the adapter as clean as possible.
4. Slide the new tooth into position and insert the lock
washer.
5. Insert the locking pin into the tooth and with a hammer,
drive the pin in until the lock washer seats in the locking
groove.
SP000939
Page 6
HAOC680L
2
Figure 2
4
3
1 FG000346
Bucket