Specifications

48
HOOK OR LUG SUSPENSION
MMooddeellss EE,, HH,, RR,, RRRR,, EE--22,, HH--22,, RR--22 aanndd RRRR--22..
As
semble the dead end bolt and block through the suspen-
sion adapter as shown in Figure 19.
Figure 19. Hook Suspension
WEATHERPROOF HOIST
Check to see that the control station, gasket, neoprene
grommet, cover gaskets, motor housing and gear housing
gaskets are in good condition and in correct position when
reassembling.
GEARING
Models JJ, LL, RR, JJ-2, LL-2, RR-2, RRT and RRT-2 have a
special Liftwheel Gear (627-303) and Intermediate Pinion
(627-325).
If the gear train in these hoists is disassembled, the following
steps must be observed in order to properly orient the three
parts when reassembling:
1. Assemble liftwheel gear to liftwheel
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2. T
o install the intermediate pinion, align the arrows that are
stamped on the pinion and liftwheel gear so they point
toward each other.
3. Check operation of gear train by rotating the pinion four
(4) complete revolutions; liftwheel gear will turn one (1)
complete revolution and the arrows will again be aligned
as shown. If the arrows do not align or there is binding
between the gear teeth, repeat the above steps.
4. For gearing lubrication instructions, see page 15
Figure 20. Non-Circular Gearing
FASTENERS
Models A thru H-2 tighten motor housing screws (627-108)
to where they have a minimum breakaway torque of 48
pound inch and the brake attaching screws (627-253) have
50 pound inch (5.649 Nm) minimum breakaway torque.
Models J thru RRT-2 tighten limit switch attaching screws
(627-220), brake attaching screws (627-253) and hexago-
nal brake stud (627-265) to where they have a minimum
breakaway torque of 50 pound inch (5.649 Nm). The lift-
wheel gear nut (627-305) should be tighten to a seating
torque of 85 pound feet (115 Nm).
LOWER HOOK BLOCK PIN
When removing or installing the lower hook block pin (627-
764), care must be taken so as to prevent damaging the
pin and/or hook block. These pins are tapered groove pins
and as a result, they can only be removed in one direction.
To remove the pin, a V-Block, drift and hammer (or slow
acting press) are required. The drift should be the same
diameter as the pin (5/16” (7.94 mm) diameter for Models
A, A-2, AA, AA-2, B, B-2, C, C-2, F and F-2; and 3/8” diam-
eter (9.52 mm) for Models J, J-2, JJ, JJ-2, L, L-2, LL and
LL-2), and it should be placed at the small end of the pin.
The small end of the pin is the end opposite the end on
which the 3 grooves are visible. Place the hook block in the
V-Block and drive the pin out using the drift and a hammer
or slow acting press.
To re-install the pin, the parts must be arranged the same
as they were when the pin was removed. To do this, use
the small end of the pin as a gage. First check the holes in
the hook block body and determine which holes is the
largest. Place the hook block body in the V-Block with the
larger hole on top. Next, check each end of the hole in the
lower chain block (627-775) and determine which end is
the largest. Place the chain in the slot of the chain and
insert the chain block, with the large hole on top, into the
hook body. Align the holes in the hook block body with the
Models R & RR
5 3/16
(132 mm)
Dead End Bolt
Dead End Block
Underside of
Bolt Head
Liftwheel
Intermediate
Missing Tooth in
Spline
627-302
Liftwheel Gear
Pinion 627-325
Liftwheel Spline
in Liftwheel Gear
Missing Tooth Space
627-303
Arrows Must Be
Aligned As
Shown
ASSEMBLY INSTRUCTIONS