McLaughlin McL-12HB ZIPPER, Components And Repair Manual

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Dog Plate /General Maintenance
Check all bolts on the dog plate initially, then once a
week during continuous operation. Tighten as needed.
When tightening bolts, test dog plate to ensure proper
function.
Lubricate all members of the dog plate, including the
dog pins, initially, then each week during continuous
use. A light machine oil or spray lubricant is recom-
mended. It is also recommended that the dog plate be
removed and cleaned periodically, especially after use
in sticky clay conditions.
Before each boring operation, adjust cylinders using
the following steps: with the machine on the track, fully
extend the cylinders. Make sure the dog pins are
secure in their respective holes. Shut off power source
before working on the machine. Loosen the nuts that
lock the two set screws at the front of the dog plate.
Tighten each of these set screws until the dog plate is
held in place with no movement. Tighten the nuts to
lock the set screws. Remove all tools and personnel
from the area around the dog plate, restart the power
source and test the dog plate. Readjust if necessary.
Track /General Maintenance
Check the rolling surfaces of the track for dirt or
contamination. Clean as required.
Tighten push plate bolts periodically. Always inspect
bolts before boring begins.
Inspect the track for fractures and reweld as necessary.
Auger /General Maintenance
Apply 30W-40W oil to both shank & socket of auger
during the boring operation.
Clean and coat couplings with light oil after every use.
Examine auger after use for fractures and reweld as
necessary.
Cutting Heads /General Maintenance
Examine all teeth and replace as necessary before
use. Check all conical bits on rock heads for rotary
freedom.
Decal Identification Kit: J100110
1.2.0
SPECS & MAINTENANCE
McL-12HB ZIPPER