RT80Q Operator’s Manual Service - 155
10 Hour
Check Digging Chain Teeth and Bits
Check teeth (1) for wear every 10 hours. Replace
worn teeth, using Ditch Witch replacement parts
and maintaining original tooth pattern.
For more efficient digging, contact your Ditch
Witch dealer for information about the tooth
pattern best suited to your jobsite.
If using rock chain bits, check that bits rotate
freely. Clean chain and check bits after each use.
Replace bit when carbide cap or insert is worn or
adapter can be damaged.
Check chain every 10 hours. Replace worn or
broken chains. If sidebars (2) are bent or loose
on chain pins (3), chain spacers should be used
to join sidebars.
Check Digging Chain Tension
Check digging chain tension every 10 hours.
With boom horizontal, measure distance from
bottom of boom to chain. When properly
adjusted, distance should be 4.5 - 5.5” (114 - 140
mm).
To tighten chain, loosen six bolts on trencher
boom and pump EPG into cylinder. To relieve
chain tension, loosen plug on grease cylinder.
Fluid pressure could pierce skin and cause injury or death. Stay away.
To help avoid injury:
• Service digging boom grease cylinder only while standing on opposite side of boom.
• Wear gloves and safety glasses, and cover fitting with cloth when relieving pressure in cylinder.
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