Service - 94 ST37x Operator’s Manual
As Needed
Trencher
Check Digging Chain Rollers, Sidebars, Pins, and Bushings
Perform periodic visual inspections of digging chain.
Check for wear on rollers (1) and sidebars (2). Check pins
and bushing wear by measuring distance (3) between
chain pins and comparing it to new chain.
Check Digging Chain Teeth and Bits
Inspect digging chain teeth for wear as needed. Replace worn teeth with new Ditch Witch
®
teeth. Each unit
is equipped with a standard tooth configuration. When replacing teeth, maintain original tooth pattern.
Depending on soil conditions and type of chain, a different configuration might produce better results.
Contact your authorized Ditch Witch dealer for more information about digging teeth patterns.
Alligator chain bits, like teeth, wear out. When tungsten cap or insert is gone, bit will wear quickly. Replace
it before bit adapter is damaged.
Check Trencher Headshaft Sprocket Bolts
Check tightness of headshaft sprocket bolts as needed.
Tighten lubricated bolts to 85 ft•lb (115 N•m)
NOTICE:
• If sidebars are bending or getting loose on chain
pins, use chain spacers to join sidebars.
• Replace worn or broken chains.
• Replace sprockets when new chain is installed.
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