Mitek RoofTracker II Reference manual

MACHINERY DIVISION
MiTek Machinery Division
301 Fountain Lakes Industrial Drive
St. Charles, MO 63301
Phone: [phone]
Fax: [phone]
www.mitek-us.com
Part # and Rev. SB236
Date Printed 17 July 2018
Date Created 17 April 2018
Created By G. Gaia
Approved By M. Kanjee
Date Revised
Revised By
Applicability 67330-501, 67370-501
67390-501, 67490-501
Affected machinery:
RoofTracker™ III roller press
Document:
SB236
Title:
Replacing a Sprocket Locking Device on a Drive Shaft
Applicable Frame Numbers:
All RoofTracker III roller presses
Distribution:
Customers upon order
SERVICE BULLETIN

SB236
ORIGINAL INSTRUCTIONS 2 of 14
Purpose and Scope
The locking device on the gantry head holds the drive sprocket in place on the drive shaft.
Replacing the locking device properly is essential to avoid costly replacement of the
gearmotor.
This procedure explains how to remove a locking device and replace it with another
locking device.
The parts included in this kit are shown below. Please make sure all parts are present
before starting this procedure.
Table 1: Parts in SB236KIT
Before beginning the procedure, gather the supplies listed here:
If you have any questions, call MiTek Machinery Division Customer Service 
at 1-800-523-3380.
Quantity Description Part #
1Service bulletin document SB236
1Locking device 547553
• Torque wrench capable of 7.4 ft-lb 
(10 Nm) to 29.7 ft-lbs (40.3 Nm)
• Machine oil that does NOT contain
silicone or molybdenum sulfide
• SAE hex drivers and socket wrench 
or SAE hex wrenches
• Sander or grinder
• 1-7/8'' combination wrench • Clean cloth or rag
• Calipers • Pliers
• Level • Paint pen
This procedure
maytakethreeto
five hours to
perform.
If you misplace
the screws for
the locking
device, order
M8–1.25 x
50mm ISO 4762
Class 12.9
socket head cap
screws from the
OEM.

SB236
ORIGINAL INSTRUCTIONS 3 of 14
Procedure
Electrical Lockout/Tagout Procedure
Before performing maintenance on any machine with electrical power, lockout/tagout the
machine properly. Follow your company’s approved lockout/tagout procedures, which
should include, but are not limited to, the steps here.
1. Engage an E-stop on the machine.
2. Locate the disconnect switch on the main electrical enclosure. Turn the disconnect
switch’s handle to the Off position. See Figure 1.
Figure 1: Removing Power from the RoofTracker III
3. Attach a lock and tag that meet OSHA requirements for lockout/tagout.
!WARNING
ELECTROCUTION HAZARD.
Even when the disconnect switch is off, there is still live power
supplied to the disconnect switch’s enclosure.
Always turn off power to the equipment before opening this
enclosure.
Main Electrical
Enclosure

SB236
ORIGINAL INSTRUCTIONS 4 of 14
Removing the Drive Chain
1. Go to the end of the gantry head opposite of the main electrical enclosure.
2. Remove the end guards highlighted in red in Figure 2 to access the drive chain.
Figure 2: End Guard Location
3. Check to see if the master link, circled in red in Figure 2, is accessible.
• If the master link is accessible, proceed to step 4.
• If the master link is not accessible, replace the guards, remove the lock and
tag, and move the gantry head slightly. Lockout/tagout again. Then repeat
steps 2 and 3.
4. Lower the mounting plate to reduce chain tension by using the following steps.
See Figure 3 for reference.
Figure 3: Mounting Plate
a) Turn the nuts highlighted in yellow in Figure 3 counterclockwise just enough
to break torque.
b) Turn the nuts highlighted in blue in Figure 3 clockwise until the mounting
plate moves just enough to remove tension from the chain.
5. Remove the master link. Remove the chain.
Mounting Plate

SB236
ORIGINAL INSTRUCTIONS 5 of 14
Identifying Your Locking Device
Removal instructions vary by model of locking device. Use Table 2 below to navigate to
the instructions that apply to your model.
Table 2: Locking Device Identification
Figure 4: Locking Device Identification
Number of Screws 
in Locking Device
Manufacturer Removal Instructions
11 Tsubaki page 6
10 Fenner page 8
NOTICE
Do NOT use an impact driver at ANY point during this procedure.
Use of an impact driver damages the locking device and may lead
to equipment failure and costly parts replacement.
NOTICE
Do NOT reinstall a locking device more than one time.
Reinstalling a locking device more than one time may lead to
equipment failure and costly parts replacement.
Tsubaki Fenner