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SL-330.MAI
4-7
07/2009
MAST LOCK INSPECTION & ADJUSTMENT INSTRUCTIONS
All SwapLoader hook-lift hoists come with a mast lock (safety latch) assembly that is located on
the bottom side of the outer tube. When the jib is extended the mast lock then engages the latch
bars (forks) on the pivot joint, making the jib, outer tube, and pivot joint into a continuous
member for raising the container or body up into a dump mode.
With the jib fully retracted the mast lock then disengages the latch bars on the pivot joint
allowing the hook-lift to enter into the mount-dismount cycle by pivoting around the front pins
of the pivot joint. A properly adjusted mast lock will function smoothly and clear the latch bars
on the pivot joint approximately a
1/4"
(see illustrations below).
INSPECTION
The mast lock assembly comes adjusted from the factory and should provide years of trouble
free operation, however there may come a time when an adjustment may be required. Prior to
making any adjustments, SwapLoader recommends that you begin with inspecting all mast lock
components for damage or wear (see illustrations below).
First inspect the adjustment tube and bolt on the jib; make sure nothing is missing or bent. Next,
inspect the release lever and connection bar on the outer tube; look for any missing or bent
components such as ears or pins. Finally, inspect the safety latch tube and inner tube (see
illustration below); again make sure there are no missing or bent components such as ears, pins,
or latches. Repair or replace any missing or bent components prior to making any adjustment to
the mast lock assembly; refer to the mast lock (safety latch) assembly drawing for proper part
numbers and identification of the components (See Drawing No. 42H08 in the Part List pages of
the manual).
Connection Bar
Adjustment Tube
Jam Nut
Adjustment Bolt
Release Lever
Safety Latch Tube
Inner Tube
1/4" Clearance
Outer Tube
Weldment
Pivot Joint
Weldment
Jib Weldment
Latch Bar
Spring Take Up
400 SERIES HOISTS
(shown with the jib retracted)
MAST LOCK LOCATION AND ADJUSTMENT ILLUSTRATION
Summary of Contents for Swaploader SL-330
Page 1: ...Model SL 330 Parts and Operations Manual Hoist Serial Number ____________________ ...
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Page 11: ...INTRODUCTION ...
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Page 19: ...INTRODUCTION 1 7 09 2009 90P52 PROP DECAL OPTIONAL 90P78 HIGH PRESSURE FLUID ...
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Page 21: ...INSTALLATION ...
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Page 61: ...Page 3 of 7 28JUL09 ...
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Page 65: ...Page 7 of 7 28JUL09 ...
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Page 71: ...10 05 09 REAR LIGHT BAR ASSEMBLY 51H68 ...
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Page 81: ...OPERATION ...
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Page 91: ...MAINTENANCE ...
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Page 94: ...SL 330 MAI 4 2 07 2009 ...
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Page 107: ...PARTS LIST ...
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Page 109: ...42H21 REV C SL 330 SWAPLOADER HOIST BASE ASS Y 7 5 5 2 2 3 1 3 4 ...
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Page 123: ...OPTIONS ...
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Page 128: ...90H69 REV B SL 330 400 406 AIR CONTROL ASS Y 3 SECTION ...
Page 132: ...43H08 REV C SL 330 400 JIB ASSEMBLY ADJUSTABLE ...
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