CHAPTER 6
ROLL CRUSHER MAINTENANCE INSTRUCTIONS
Section I. DRIVE BELTS
118. General
b. Cleaning and Inspection. Clean and inspect all
The drive belts are used to transmit power from the
parts.
Replace worn or defective drive belts as
engine to the crusher rolls, and from electrical motors to
necessary.
gear reducers, for the conveyor belts, feeder pan, and
c. Installation.
elevator.
The screen vibrator is actuated by an
(1) Install the electrical motor drive belts on
electrical motor and direct drive belts.
the electric motor in reverse of the
instructions on figure 59.
119. Electric Motor Drive Belts
(2) Adjust the electrical motor drive belts (TM
a. Removal.
53820-205-10/1).
(1) Remove the outer belt guard (TM 53820-
(3) Install the outer belt guard (TM 53820-
205-10/1).
205-10/1).
(2) Remove the electrical motor drive belts
from the electric motor as instructed on
120. Crusher Main Drive Belts Adjustment
Adjust the crusher roll main drive belts as instructed
on figure 60.
Section II. SHEAVE, HUB, AND GUARD BASE
121. General
b. Cleaning and Inspection. Clean and inspect all
The sheave and hub are attached to the electrical
parts. Replace damaged sheave or hub as necessary.
motor shaft and gear reducer shaft.
c. Installation.
(1) Install the guard base, hub, and sheave in
122. Sheave, Hub, and Guard Base
the unit in reverse of the instructions on
a. Removal.
(1) Remove the outer belt guard (TM 53820-
(2) Install the belts (para. 119).
205-10/1).
(3) Adjust the belts (TM 5-3820-20610/1).
(2) Remove the belts (para. 119).
(4) Install the outer belt guard (TM 63820-
(3) Remove the sheave, hub, and guard base
205-10/1).
from the unit as instructed on figure 61.
Section III. CRUSHER ELECTRICAL SYSTEM
crusher components, a main control panel, operator's
123. General
control box, and necessary wiring, switches, and
The roll crusher electrical system is comprised of the
hardware to complete the circuits.
feeder jumper and reel assembly, a main power cable to
connect the crusher to an outside source of power,
124. Feeder Jumper Reel and Bracket Assembly
connector receptacle assemblies, five electric motors to
operate the
a. Removal. Remove the feeder jumper reel
87