Ditch Witch RT55 - Manual (Page 110)

RT55 T4i Operator’s Manual
Systems and Equipment - 109
Trench Depth Meter
Trench Depth Meter
Trench Depth Meter (TDM) is an optional electronic system for measuring and recording trench depth.
TDM also displays productivity and distance while trenching. Two lines of information are displayed on the
LED screen. If the system detects error conditions, diagnostic codes will be displayed on the second line.
Chain, Teeth, and Sprockets
Chain and Tooth Maintenance
• Always replace sprockets at the same time you replace the digging chain. Sprockets and chain are
designed to work together. Replacing one without the other will cause premature wear of the new part.
• Keep digging teeth sharp. Using dull, worn teeth will decrease production and increase shock load to
other trencher components. It can also cause chain stretch, which leads to premature chain wear and
failure.
• Maintain the proper amount of tension on the digging chain. Overtightening will cause chain stretch
and loss of machine performance. For correct tightening procedure, see page 128.
• Use the tooth pattern most appropriate for your digging conditions. If you move to a different soil type,
contact your Ditch Witch dealer for information about the most effective chain type and tooth pattern.
Chain Types
IMPORTANT: For more information about TDM see the TDM Operator’s Manual (p/n 054-117).
Chain type Features
4-pitch standard chain
2-pitch more teeth for smoother cutting
alternating side bar prevents spoil compaction on chain
bolt-on adapters allow easy configuration changes
Shark Chain II versatile, virtually maintenance-free
combination provides pick and shovel effect