Repair manual

Gearbox and Spider CRT Repair
wc_tx000095gb.fm 34
6. Gearbox and Spider
6.1 Gearbox Basics
See Graphic: wc_gr001579
Rotation of the gearboxes will differ depending on which side of the
trowel the gearbox is located. Gearboxes located on the Right-hand
side of the trowel rotate counterclockwise or left-hand rotation when
viewed from the top. Gearboxes on the Left-hand side of the trowel
rotate clockwise or right-hand rotation. The blade rotors rotate IN
under the operator.
Blade rotors require timing so they will not interfere with each other
during operation.
Anytime the drive line or gearboxes are removed, timing may be
required. When properly timed, the blades should be positioned 45
degrees off of each other.
To time the rotors:
6.1.1 Elevate the trowel off the ground. Use either the dolly jack wheels or
place the trowel on blocks.
6.1.2 Rotate the input shaft of the uncoupled gearbox until the blades align
as shown.