Section IV: Maintenance
4.0.MAI.SL-212
ADJUSTMENT
If after inspecting all mast lock components and making any necessary repairs the gap between
the mast lock and latch bars on the pivot joint is still incorrect, then an adjustment will need to
be made. Please complete the following steps:
1. Retract the jib until the cylinder completely bottoms out (fully retracted).
2. Inspect gap between mast lock latch and the latch bar on the pivot joint. Look for a
clearance of approximately 1 3/8" (if not proceed to steps 3-5).
3. Loosen jam nut on the adjustment bolt.
4. Turn adjustment bolt; counter-clockwise to increase gap or clockwise to decrease the
gap.
5. Once the 13/8" clearance is achieved, tighten the jam nut. Make sure to hold the
adjustment bolt from turning when tightening the jam nut.
JIB LOCKOUT VALVE INSPECTION & ADJUSTMENT INSTRUCTIONS
All SwapLoader hook-lift
hoists have a jib lockout valve
to prevent accidental
operation of the telescopic jib,
while the hoist is up in a dump
mode. Because the jib lockout
valve can block the flow of
hydraulic oil to the jib cylinder,
should the valve come out of
adjustment the telescopic jib
may experience a reduction in extension or retraction speed to the point of stalling out.
INSPECTION
When a noticeable loss in extension or retraction speed of the telescopic jib is experienced, the
first step should be to inspect the jib lockout valve and valve mount ramp to ensure that they are
adjusted properly and in good working order. The jib lockout valve is located on the inside rail
of the hoist mainframe approximately two-thirds of the way back on the driver side of the hoist
(see Jib Lockout Valve Mount Detail on
Pg. 5-2
of the Parts section of the manual). Visually
inspect the jib lockout valve roller and the condition of the valve ramp on the hoist pivot joint
without a container on the hoist (see illustration on the next page); this is most easily performed
with the hoist back in a dismount mode. If either part shows signs of wear or damage then
replace or repair as needed.
With the jib lockout valve roller and valve ramp in good condition the next step is to check that
the valve is positioned correctly with respect to the valve ramp. While looking at the roller end
of the jib lockout valve, notice that the roller moves in and out of an end cap. With the hoist
pivot joint in the down position, or horizontal to the hoist mainframe, the valve ramp should be in
contact with the jib lockout valve roller. The roller should be depressed by the valve ramp so
4-5
Содержание SL-212
Страница 1: ... Hooked on Quality PA R T S A N D O P E R AT I O N M A N U A L HOIST SERIAL NUMBER MODEL SL 212 ...
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Страница 45: ...Section II Installation Accessories 2 7 INS ACC LEDLB 2 27 ...
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Страница 58: ...Section IV Maintenance 4 0 MAI SL 212 LUBRICATION DIAGRAM LEGEND GW Grease Weekly GM Grease Monthly 4 2 ...
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Страница 88: ...1800 NE BROADWAY AVENUE DES MOINES IA 50313 TOLL FREE 888 767 8000 FAX 515 313 4426 ...