Ditch Witch RT120 - Manual (Page 169)

Service - 168
RT120 Operator’s Manual
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 Boom Mounting Bolts
Check 14 bolts (7 on each side) every 10 hours
and tighten as necessary to keep bolts and other
fasteners tight. Check for looseness or wear.
Check that bolts are tightened to 250 ft•lb (28
N•m).