Farr 80-0420-16, Technical Manual

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KT5500 5-
1
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2
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ong
& CLInCHER® B
aCKup
S
ECTIon
C
onTEnTS
3.18
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anuaL
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aInTEnanCE
Mechanical Assembly Procedure (Continued):
61. Attach the rigid sling hanger weldments (LH weldment = PN 101-0150, RH weldment = PN 101-0151) to the top plate using
two 3/8” NC x 1-3/4” bolts (outside), two 3/8” NC x 1” bolts (inside), and four 3/8” lock washers per hanger.
62. Install inlet coupling support assembly (PN 1050-C-175) to the top plate, between the RH pinion idler and RH rotary idler,
using two 3/8” NC x 1” hex bolts and 3/8” lock washers. Attach the outlet coupling support base (PN 101-0023) to the top
plate right of the pinion bearing cap using two 3/8” NC x 1” hex bolts and 3/8” lock washers, and attach the adjusting plate
(PN 101-0022) to the support base using two 3/8” NC x 1” hex bolts, two 3/8” flat washers, and two 3/8” UNC nylock nuts.
63. Install two hydraulic valve mount weldments (PN 101-1442) to the top plate on either side of the brake band retainer using
one 3/8” NC x 1” hex bolt and 3/8” lock washer per weldment.
64. Install the hydraulic valve assembly to the valve mount weldments using one 1/2” NC x 4-1/2” hex bolt and 1/2” narrow flat
washer per valve mount. Install main inlet and outlet lines, and the remainder of the hydraulic connections. See the hydraulic
schematic for hydraulic connections.
65. Slide the master lifting link (PN 02-0516) over the adjustment helix (PN 1053-1-H), and install the adjustment helix in the rigid
sling weldment (PN 101-0112) using a 3/4” UNC x 8” hex bolt and 3/4” UNC nylock nut.
66. Use a crane to hoist the rigid sling weldment. Connect the rigid sling weldment to the rigid sling mounting lugs with rigid sling
pins (PN 1053-C-1C). Secure each pin with two 0.148” x 2.938” hitch pins.
67. Thread a 3/4” UNC hex nut on to each of two rigid sling leveling adjustment weldments (PN 1053-C-1L). Thread the leveling
adjustment weldments into the front of the rigid sling weldment mounting brackets, roughly adjusting them so the rigid sling
is approximately perpendicular to the top plate of the tong (see illustration 3.H.10).
68. Thread 1/2” UNC hex nuts on to two 1/2” UNC x 1-3/4” hex bolts. Thread the bolts into the rear of the rigid sling weldment
mounting brackets. (see following illustration).
69. Use a crane and temporary sling to hoist the backup assembly onto a support structure next to the assembly location of the
tong. Minimum height for the backup supports must be 36” in order to allow clearance for installing the front legs.
70. Attach the rear leg assembly to the tong:
a. Position rear leg weldment on a flat surface near the tong assembly location.
● Model 80-0420-16 uses rear leg weldment PN 101-4487
● Model 80-0422 uses rear leg weldment PN 101-1547
● Model 80-0421-3 uses rear leg weldment PN 101-1987
b. Use a crane to hoist the tong assembly off the assembly surface. Bring the tong into contact with the rear leg, ensuring
the crane continues to support the entire weight of the tong. Attach the rear leg weldment to the tong using two 1-1/4”
UNC x 8” hex bolts and 1-1/4” UNC hex nylock nuts, and two 1” UNC x 7” hex bolts and 1” UNC hex nylock nuts.