Manitowoc Grove GRT880 Service Manual

4-15
Published 10/19/2017, Control # 618-00
GRT880 SERVICE MANUAL BOOM
4
GROVE
BOOM DISASSEMBLY
NOTE: Boom assembly must be rotated 180° (upside
down) before performing any assembly or
disassembly procedures.
Use the following procedures and refer to Figure 4-1 when
disassembling the boom.
1. Remove boom from crane following the procedures
outlined under Boom Removal, page 4-2.
2. At rear of base (101), tag and remove all hydraulic tubes
from valves and telescope cylinder. Remove valves and
valve bracket. (see Figure 4-2).
3. Position boom assembly upside down on adequate
supports.
4. Loosen nuts (8) at front of tele 3 (401) to put slack in the
two retract cables (7).
509 SHEAVE ASSY - 5 GROOVE
510 LUBRICANT HOSE L=260
511 PIN CYLINDER MOUNT
512 F WASHER 0.41X1.50X0.13
513 PLATE TELE CYL MOUNTING
514 WEAR PAD
515 WEAR PAD
516 SHAFT SHEAVE HEAD
517 H BOLT 1-8UNCX14 G8
518 ANCHOR_CABLE CAST SLED
519 PLATE COVER
520 CABLE RETAINER
521 SWIVEL NUT
522 PLATE
523 SIDE WEAR PAD
524 SHCS-LOW M12X20 8.8-A3C DIN 79
525 ADAPTER 304-19509-1 M10X1/M10X
526 ELBOW, PUSH-IN 226-14123-3 WEK
527 PIPE UNION SV-06L/SW17 M12X1
529 F WASHER 3/4?HARD ASTM F-436-
530 F WASHER, 8 ST ISO 7089
531 L WASHER, 8 ST DIN 127B
532 F WASHER, 10 ST ISO 7089
533 L WASHER 10 -HRC44-51 DIN 127
534 F WASHER, 12 ST ISO 7089
535 L WASHER 12 -HRC44-51 DIN 127
536 SBCS 3/8-16UNCX1.25 F835
537 HHCS FULL THREAD, 8 X 20 8.8
538 HHCS M8X30 8.8 ISO 4017
539 HHCS FULL THREAD, 10 X 30 8.8
540 HHCS FULL THREAD, 12 X 25 8.8
541 HHCS M12X120 8.8 ISO 4014
542 HHCS M20X45 10.9 ISO 4014
543 HEX NUT 1-8UNC SAE-8
544 HEX NUT M12 8 ISO 4032
545 SPACER PL
Item Description
CAUTION
A rollover fixture with webbing is recommended to rotate
the boom sections. Chains are not recommended. If a
rollover fixture is not available, rotate the sections using
adequate support with webbing.
A secure fixture that will prevent damage to the boom is
recommended to stabilize and hold the boom from moving
during removal of the boom section(s).
When adjusting the extend and retract cables, hold the
cable end and turn the nut. Do not turn the cable. Turning
the cable while adjusting will result in damage or failure of
the cable.
FIGURE 4-2
9044-81
101
Reference Only

Manitowoc Grove GRT880 Specifications

General

Brand	Manitowoc
Model	Grove GRT880
Category	Construction Equipment
Language	English