Grove Published 01-29-2015, Control # 512-01 4-9
TMS700E SERVICE MANUAL BOOM
72. Remove the four bolts and hardened washers securing
the sheave mounting assembly and the support foot to
the front of the telescope cylinder. Remove the sheave
mounting assembly and the support foot.
73. If necessary, remove the two screws securing each wear
pad to the support foot and remove the wear pads.
74. If removal of the boom nose sheaves are required, refer
to Boom Nose Sheaves, page 4-9 - Removal.
75. Refer to Boom Extension and Retraction Cable, page 4-
14 for cable inspection.
Boom Nose Sheaves
Removal
1. Remove the clip pins from the cable retainer pins and
remove the cable retainer pins from the upper and lower
part of the boom nose.
2. Remove the bolt, washer, and nut securing the upper
boom nose sheave shaft. Remove the collar.
NOTE: The boom nose sheave shafts weigh
approximately 63 kg (138 lb) each. The boom nose
sheaves weigh approximately 13 kg (28 lb) apiece.
3. Carefully pull the upper boom nose sheave shaft from
the boom nose, removing the spacers, shims, and boom
nose sheaves.
4. Repeat steps 2 and 3 and remove the lower boom nose
sheave shaft.
5. Remove the shim, keyed washer, washer, and locknut
from both sheave shafts.
Installation
NOTE: The boom nose sheave shafts weigh
approximately 63 kg (138 lb) each. The boom nose
sheaves weigh approximately 13 kg (28 lb) apiece.
1. Install the spacers and sheaves onto the sheave shaft
while installing the sheave shafts into the boom nose.
NOTE: The lockwasher can be used more than once but
must be replaced if not in good condition.
Install the lockwasher onto the sheave shaft with
the tabs facing out.
2. Install the locknut, washer, keyed washer, and shims (if
necessary) onto the boom nose sheave shaft with the
chamfer side out. Install the collar onto the opposite end
of the sheave shafts and secure in place with the bolt,
washer, and nut.
NOTE: If more than one shim is required, install an equal
amount on each side of the boom nose.
3. Tighten the locknut until the play in the entire assembly
is within 0.79 mm (0.03 in) total. Install shims as
necessary to achieve the correct dimension. Bend the
lockwasher tabs to secure the locknut in place.
4. Install the cable retainer pins into the upper and lower
part of the boom nose and secure in place with the hitch
pins.
Assembly
NOTE: Apply Loctite 243 to the threads of all attaching
hardware except cable ends and cable lock nuts.
Apply multipurpose grease (MPG) to all wear
surfaces.
Use standard Grade 5 and/or 8 torque values
specified in Fasteners and Torque Values, page 1-
12 of this manual unless otherwise specified.
1. Install wear pads on the bottom of the upper telescope
cylinder support foot using two screws each.
2. Install the support foot and the sheave mounting
assembly on the front of the upper telescope cylinder
assembly, with four bolts and hardened washers. Attach
the support foot and the sheave mounting assembly
together using four bolts and hardened washers.
NOTE: The sheave shaft should be installed with grease
fitting hole to the left side.
3. Using the sheave shaft, install the sheave assembly in
the sheave mounting assembly. Secure the shaft with a
plate and two bolts and hardened washers on each side
of the sheave mounting assembly. Install grease fitting in
shaft and apply grease.
4. Route the lug end of the four extension cables up and
around the upper telescope cylinder sheaves about 1 ft
(.3 m) on to cylinder. To aid in assembly, secure the
cables to the end of the cylinder by wrapping tape
around the cylinder.
CAUTION
Do not install the boom nose sheaves over the threaded
end of the boom nose sheave shaft.
CAUTION
When adjusting cables, hold the cable end and turn the
nut. Do not turn cable. Turning cable while adjusting will
result in damage or failure of cable.
Install cables in their natural untwisted condition. Do not
twist cable. Twisting of cable will result in damage or
failure of cable.
Reference Only
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