McLaughlin McL-12HB ZIPPER, Components And Repair Manual

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REPAIR INSTRUCTIONS
McL-12HB ZIPPER
WARNING:
Moving parts. Keep all guards in place.
Shut down engine before service or mainte-
nance. Being caught in machinery may cause serious
injury.
WARNING:
High Pressure. Leaking hydraulic fluid under
pressure can penetrate and cause serious injury.
Check for leaks with cardboard. Relieve pressure
before working on any system.
WARNING:
Crushing weight can cause serious injury.
Place machine on solid surface to prevent
rollover or falling.
WARNING:
Do not modify this machine. Use only
authorized McLaughlin repair parts. Failure
to comply can result in serious injury. Service this
equipment according with maintenance instructions in
this manual.
CONTROL VALVE SETTINGS:
THRUST AND ROTATION RELIEF VALVE SETTING:
2500 PSI (173 BAR)
BEFORE DISASSEMBLY:
1. CHECK THE POWER SOURCE FOR THE
FOLLOWING:
A. Proper pressure and flow rate.
B. Correct fluid level and filtration.
2. SHUT DOWN THE POWER SOURCE. RELIEVE
SYSTEM PRESSURE AND DISCONNECT
MACHINE FROM THE POWER SOURCE.
FAILURE TO FOLLOW THESE STEPS PRIOR
TO MACHINE DISASSEMBLY MAY RESULT IN
SERIOUS INJURY.
STEP 1:
CHAIN COVER REMOVAL AND INSPECTION -
1. Remove bolts and lockwashers from chain cover
(Photo #1).
2. Pull cover away from the machine frame. Some
resistance may be encountered because of silicone
sealant.
3. Inspect cover for cracks and dirt.
4. Wipe cover interior clean and scrape old silicone
from cover and machine frame.
5. TO BEGIN REASSEMBLY - Apply a bead of
silicone on the flange of cover (Photo #2).
6. Carefully set cover in place. Insert bolts and
tighten.
7. Apply a heavy bead of silicone around the top of
cover and any visible cracks that may allow dust
and dirt to get in the cover.
8. Wipe off excess silicone and allow to dry before
handling or using the boring machine.
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