13
45-053, REV. 5/18
Detent pin
Hook
Figure 4-3, Detent pin style quick hook
For detent-pin style quick hooks, just pull the pin and
remove it. The hook will come loose.
4.4 Installations with Bolt-On Hooks
1. Center the truck behind the attachment and drive
toward it with the mast tilted forward about 4
degrees.
2. Line up the locking lug (if equpped) with the notch
closest to the center on the truck’s carriage.
3. Raise the truck carriage completely to engage the
top hooks with the truck carriage. Tilt carriage back
until the unit is against the carriage bottom fork bar
(0 degrees).
4. Inspect for proper engagement of the locking lug in the
notch that puts the attachment closest to the center
of the truck’s carriage.
5. Weld on the (optional) extra locking lug supplied with
the attachment, (two pieces of 1/2" x 1/2" x 2.00" steel,
shipped loose) with either E-6011 or E-6013 welding
rod, or equivalent, on each side of the truck carriage.
Locking lug in notch
YXE4C-307
1/2 x 1/2 x 2.00 steel
supplemental
locking lug (optional)
1/16" clearance
Figure 4-4, Welding the optional locking lug
6. Install the bolt-on lower hooks. Check the clearance
between the carriage and the lower hooks. Loosen
the bolts on the front of the hooks, and slide them up
or down so the clearance is no more than 3/32".
On Class II and Class lll units, tighten the 3/8" bolts
to
33 ft-lbs
. On Class lV units tighten the 1/2" bolts
to
77 ft-lbs.
On units using 9/16" UNC bolts, tighten
the bolts to
112
ft-lbs
.
Notice
Make note of any factory-installed spacers
or shims. Shims are used to create
clearance between the hook and carriage.
Maximum
Clearance
1/8"
Maximum
Clearance
1/32"
Maximum
Clearance
3/32"
Class III Shims Shown
Shim as Required
Bottom Bar
Bottom Hook
Bottom Hook
Spacer
Fork Base
Truck Mast
Lower ITA Bar
Roller
Assembly
Figure 4-5, Adjusting bolt-on bottom hooks with
spacers
4.5 Installations with Quick Hooks
