Farr KT5500 Technical Manual page 57

M
aInTEnanCE
Mechanical Assembly Procedure (Continued):
71. 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.
72.
80-0420-16 assembly (uses 85-0408 backup)
5.40 - 5.41):
a. Place two springs (PN 991-13) over the nubs on one of the two spring plate weldments (PN 101-4495). Place the second
spring plate weldment over the springs and use four 1/2" UNC x 6" hex bolts, 1/2" narrow flat washers, and 1/2" UNC
hex nylock nuts to fasten the assembly together.
b. Install the spring support weldment in the rear leg using two 3/8" UNC x 9-1/2" hex bolts, 3/8" narrow flat washers, and
3/8" UNC hex nylock nuts. The location of the support can be changed as required when leveling the backup.
73.
85-0404 and 85-0506 backup assemblies
ing with the tong and rear leg assembly. Refer to Pp. 5.40 - 5.41.
a. Thread a 1-1/4" UNC heavy hex nut on to the 1-1/4" UNC x 8" threaded rod (PN 101-1993).
b. Coat at least 2" of thread on the threaded rod with red Loctite. Screw the threaded rod into the heavy hex bolt welded to
the top plate of the backup until the rod bottoms out. Lock the threaded rod in place using the heavy hex nut threaded
on to the rod in the previous step.
c. Coat at least 4" of thread at the top of the threaded rod with red Loctite. Thread on a 1-1/4" UNC heavy hex nut, ensuring
enough thread is exposed to allow installation of the suspension spring v-bracket and another 1-1/4" UNC heavy hex nut.
d. Install the suspension spring v-bracket (PN 1483-500-00-04) on to the threaded rod, and secure with another 1-1/4"
UNC heavy hex nut.
74. Remove the side panels from the backup.
75. Use a crane to hoist the tong and rear leg assembly and place in position over the backup. If using the 85-0604 or 85-0607-1
compression load cell-style backups the rear leg must be guided so that the "paddle" on the backup sits between the vertical
plates of the rear leg when the tong and rear leg assembly is in position over the backup.
76. Hold a top spring cap (PN 1302-905-03B) under the top plate of the backup, and insert a front leg tube (PN 1302-904-905C)
from the bottom of the backup, through the spring cap, and in to the leg mount weldment on the tong. Secure the leg tube
with a 7/16" UNC x 4" hex bolt, 7/16" narrow flat washer, and a 7/16" UNC nylock nut. Repeat for the other leg tube.
77. Slide a leg spring (PN 1391-905-02B) over the bottom of each leg tube, followed by a bottom spring cap (PN 1302-905-03C).
Secure each leg spring and bottom spring cap to the leg tube using a 7/16" UNC x 3" hex bolt, 7/16" narrow flat washer, and
a 7/16" UNC nylock nut.
78.
85-0604 and 85-0606 backup assemblies
a. Thread a 3/8" NC shoulder pattern 2-A eye bolt in to the tong body from the bottom of the top plate of the rear leg weld-
ment, near the front of the rear leg (see Pp. 5.42 - 5.43).
b. Connect one end of a rear backup support spring (PN 1391-905-03) to one of the eye bolts installed in the previous step,
and the other end of the spring to the v-bracket installed in step 71d. Secure the end of the spring to the v-bracket using
a spring retainer (PN 1480-500-00-04B) and a cotter pin. Repeat for the second spring.
79. Use a crane to hoist tong and backup assembly off the backup supports, and lower assembly so that it sits on its legs.
80. Install grease fittings:
a) Install one 1/4" straight thread grease fitting (PN 02-0097) into the top side of each support roller shaft, including the
door pivot rollers (10 locations total).
b) Install one 1/4" straight thread grease fitting (PN 02-0097) into the top side of the latch adjustment cam.
c) Install one 1/8" NPT grease fitting (PN 02-0005) into the top of each idler shaft or half-shaft (three locations total).
d) Install one 1/8" NPT grease fitting (PN 02-0005) into the end of the clutch shaft, in the centre of the clutch bearing cap.
e) Install two 1/8" NPT 90
f) Install two 1/8" NPT 90
g) Install one 1/8" NPT 90
motor mount.
h) Install two 1/8" NPT 90
cylinder, and two into the bottom backup plate directly beneath each of the clamping cylinders (eight locations total).
i) Install drive-in grease fittings (PN 02-0012) into the ends of each cage plate cam follower (26 locations total).
81. Install hydraulic inlet support base (PN 101-1138) to the top plate directly adjacent to the RH rotary idler, using two 3/8" NC x
1" hex bolts and 3/8" lock washers. Attach the adjustment plate (PN 101-0022) to the support base using two 3/8" NC x 1" hex
bolts, 3/8" narrow flat washers, and 3/8" UNC hex nylock nuts.
82. Attach the outlet coupling support mounting base (PN 101-0021) to the top plate to the RH side of the motor mount using four
3/8" UNC x 2" hex socket head cap screws.
only: install the rear backup support spring assembly in the rear leg (see Pp.
only: if using either of these backups ensure they are properly prepared for mat-
only:
grease fittings (PN 02-0093) in each pinion bearing cap (four locations total).
o
grease fittings (PN 02-0093) in clutch bearing cap (two locations total).
o
grease fitting (PN 02-0093) or one 1/8" NPT 45
o
grease fittings (PN 02-0093) into the top plate of the backup directly above each clamping
o
T
KT5500 5- " T
1
/
2
grease fitting (PN 02-0006) in the top of the
o
M S
ECHnICaL anuaL
& CLInCHER® B
ong
3.19
C
ECTIon onTEnTS
aCKup