4-47
Published 10/19/2017, Control # 618-00
GRT880 SERVICE MANUAL BOOM
91. Spray multipurpose grease on outside of tele 1 (201).
Measuring approximately 1/4 of the distance of the
boom from the front tip, leave a 5 ft. wide strip of boom
free of grease to install wear pads.
92. Remove cover plates from hydraulic tubes on telescope
cylinder #2 (501) and from block on telescope cylinder
#1 (502). Install new O-rings into hose ends of the two
hydraulic hoses, then install hoses onto the cylinder
tubes and block as tagged during disassembly (see
Figure 4-122).
93. Apply anti-seize to the two trunnion lugs of telescope
cylinder #2 (501), then install plates (513) on left and
right sides (see Figure 4-123).
94. Insert tele 1 (201) until wear pads on the bottom outside
of tele 1 (201) are inside base (101). Remove ratchet
strap (S) and further insert tele 1 (201) into base (101)
(see Figure 4-124).
Add or subtract shims (222, 223) underneath the four
wear pads (224) until wear pads are within 2 mm of the
side or top of base (101)
95. Insert tele 1 (201) into base (101) until all wear pads
around rear of tele 1 (201) are inside base (101).
96. Slightly raise tele 1 (201), then install wear pads (103,
104) in the left and right bottom (as oriented) corners,
between base (101) and tele 1 (201). Install wear pad
FIGURE 4- 122
9044-66
501
502
FIGURE 4- 123
9044-67
501
513
FIGURE 4- 124
9044-68
201
101
S
FIGURE 4- 125
9044-69
201
101
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