Carrier Roller Contact at One End Only: Skew, Tilt or Wear?
When a carrier roller touches the track at one end only, three explanations compete: the upper run is skewed, the roller or its bracket is tilted, or the shell has...
Knowledge
Excavator Undercarriages Information
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Track Roller Oil Stain After Pressure Washing: Residue or Leak?
A wet-looking track roller right after pressure washing doesn't show a seal leak, and a clean-looking one doesn't rule one out. The deciding evidence is timing: whether fresh wetness returns...
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Track Roller Shiny Band on One Flange: What It Does and Doesn't Show
A shiny band on one roller flange shows that something has rubbed or slid against it. It doesn't say what, or why. The band's width, how far around the flange...
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Track Roller Oil Stain vs. External Hydraulic Leak: Tracing the First Wet Point
Oil on a track roller doesn't prove the roller is leaking. Hydraulic fluid travels, so a wet roller can be catching runoff from a hose or fitting above it, or...
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Track Roller Free When Unloaded but Binding Under Load: What to Record and Hand to Service
A track roller that spins freely unloaded but binds under load is a symptom, not a diagnosis. Free rotation by hand doesn't reproduce the weight, track contact, alignment and heat...
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Excavator Undercarriage After Transport Chain Contact: Recording What the Chain Touched
When a transport chain has touched an excavator, the record should show where it made contact, what the marks are limited to, and what the loading and unloading photographs show...
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Excavator Undercarriage After Flood Water Exposure: Building the Event Record
After flood water reaches an excavator, the record should establish four facts before anyone starts, moves or cleans the machine: how deep the water was, how long the machine stood...
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Excavator Tracks After Recovery From Deep Mud: What to Record Before and After Cleaning
After a deep-mud recovery, photograph the packed areas, the recovery attachment points and any fresh contact marks before anything is cleaned. Then clean under the machine's procedure, record what the...
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Rental Excavator Undercarriage Photos at Handover: Making Before and After Comparable
Before-and-after photos are only comparable when each one is taken from the same fixed view, labelled by side and position, timestamped and shot at a consistent distance. For undercarriage condition,...
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Welded Sprocket Teeth on a Used Excavator: What to Record and What Needs Qualified Assessment
Added material on sprocket teeth is a condition to locate and document, not one an inspector can classify as serviceable or defective. Record where the added material sits relative to...
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Rental Excavator Returned With a Loose Rubber Pad: Record It Before Anything Moves
A loose rubber pad on a returned rental excavator should be photographed where it sits, with its hardware and the marks around it, before the machine moves or anyone handles...
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Used Excavator Rubber Tracks and the Steel Undercarriage Behind Them: Keeping Two Records Apart
Rubber tracks on a used excavator tell you about the rubber. They don't tell you the condition of the sprockets, idlers, rollers, frame and final drives that carry them. Record...
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Freshly Painted Used Excavator Undercarriage: Building a Handover Record Without Assigning Cause
Fresh paint on a used excavator's undercarriage is something to record, not proof that anything was hidden. It does change what you can read from the surface, so the handover...
