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GENERAL INFORMATION
Your trencher was designed to be virtually maintenance free. Very
little effort is needed to keep it in top condition. It is however important to
follow these procedures to get full performance and longevity out of the
trencher.
LUBRICATION
The only lubrication your trencher needs is the greasing of the
headshaft end bearing. The bearing should be lubricated with an SAE multi-
purpose grease every 8 hours of operation. A grease zerk is installed in the
bearing to facilitate this task.
NOTE: Not all trenchers require lubricating of the headshaft bearing. Some
units have a sealed bearing that requires no maintenance. These units can
be identified by the absence of a grease zerk in the bearing.
IMPORTANT: DO NOT lubricate any other part of the trencher! Lubricating
parts such as the digging chain or the idler wheel will only attract dirt, re-
sulting in increased wear.
EVERY 40 HOURS OF OPERATION
Every 40 hours of operation the trencher should be inspected for
loose nuts, capscrews, bearings etc. Tighten as required, replace where
necessary. Clean equipment of all dirt, oil, grease, etc. This will assist you
in making visual inspections and help avoid overlooking worn or damaged
components. Keep all safety decals clean and legible. Replace if damaged
or worn.
DIGGING TOOTH REPLACEMENT
Sharp teeth are important to good performance. When teeth wear
out, production will drop sharply, increasing wear and tear on other compo-
nents.
Cup teeth wear on the tip and side bulge in varying amounts. Wear
patterns change with different digging conditions. The following patterns
and captions are approximate and should be used as a guide to help you
determine your own best cost/benefit tooth replacement time.
replacement should be made between 30% and 60% reduction in perfor-
mance. Replacement is a bolt-on procedure. See Section J.
New
MAINTENANCE
GENERAL MAINTENANCE
20% Reduced
50% Reduced
Performance
Performance
Normal
70% Reduced
Beyond
Performance
3-3-92-2
L
Use
4445
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