Section 4: Making Adjustments
Bambi Bucket Service Manual – Models 6072-1821 13
Section 4: Making Adjustments
Adjusting the Dump Valve Udder
Udder refers to the amount that the dump valve bulges out
below the bucket shell, when the bucket is full. A properly
adjusted dump valve will have a maximum of 2" (50 mm) of
udder.
Too much udder will add to the volume and thus the weight of
the bucket. Too little udder will result in the valve leaking
and premature wear on the purse strings.
To adjust the udder, change the length of the tripline by
adjusting it at the tripline adjustment chain.
If a new tripline is installed, first install it at the same point on
the adjustment chain and then test the dump valve in use.
Remember to secure the adjustment shackle with a lock wire
or tie wrap first. It is impossible to judge udder with an empty
bucket on the ground.
Adjusting Purse Strings
Adjustment of the purse strings in the dump valve is important
to ensure a good seal at the neoprene lips of the valve mouth.
The purse string adjustment is set and tested at the factory.
The purse strings may shrink or stretch after use and require
adjustment.
Whenever new purse strings are installed, adjustments must
be made. When installing a new set of purse strings, orientate
the valve correctly and always make sure to stagger the strings
from side to side. See Section 8: Repairs for complete
instructions on how to replace purse strings.
When initially tying up the purse strings, note that more tension should be on the outside string with
progressively less tension towards the middle. If the tension is too great on the middle string, the valve
action will be sluggish when the valve is retracting.
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