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Mitek RoofTracker II Service Bulletin

Roller press. replacing a sprocket locking device on a drive shaft
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MACHINERY DIVISION
SERVICE BULLETIN
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
MiTek Machinery Division
301 Fountain Lakes Industrial Drive
St. Charles, MO 63301
Phone: 800-523-3380
Fax: 636-328-9218
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

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Summary of Contents for Mitek RoofTracker II

  • Page 1 Title: Replacing a Sprocket Locking Device on a Drive Shaft Applicable Frame Numbers: All RoofTracker III roller presses Distribution: Customers upon order MiTek Machinery Division Part # and Rev. SB236 301 Fountain Lakes Industrial Drive Date Printed 17 July 2018 St.

  • Page 2: Purpose And Scope

    • Level • Paint pen M8–1.25 x 50mm ISO 4762 If you have any questions, call MiTek Machinery Division Customer Service  Class 12.9 at 1-800-523-3380. socket head cap screws from the OEM. ORIGINAL INSTRUCTIONS 2 of 14...

  • Page 3: Electrical Lockout/Tagout Procedure

    SB236 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.

  • Page 4: Mounting Plate

    SB236 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.
  • Page 5 SB236 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 Number of Screws  Manufacturer Removal Instructions in Locking Device Tsubaki page 6 Fenner...
  • Page 6 SB236 Removing a Tsubaki Locking Device 1. For reference, write the numbers of the locking holes on the sprocket. The screw in locking hole 6 is the only screw that is not next to an unlocking hole. See If you are removing Figure 5.

  • Page 7: Minimum Distance

    SB236 5. Finish tightening the five screws by using the following guidelines. • Tighten screws 30 degrees at a time in the pattern shown in Figure 6 until you reach 30 ft-lbs of torque with each screw. • Do not exceed 30 ft-lbs of torque with any screw. •...
  • Page 8 SB236 Removing a Fenner Locking Device 1. Remove all screws from their locking holes shown in Figure 8. Check the screws and threads to make sure they are not damaged. If you are removing Figure 8: Fenner Screws in Locking Holes a Tsubaki locking device, see page 6.
  • Page 9 SB236 4. Support the drive sprocket so that it does not tilt and deform the locking device. 5. Release the locking device by using the following steps. a) Tighten screw 1 in Figure 10 a half of a turn. b) Proceed to tighten each screw one half turn in the order shown in Figure 10. After tightening all screws one full turn, clamp collar A may not appear to have moved even though the screws may seem tight.
  • Page 10 SB236 d) Remove the screws from clamp collar A. e) Place the chamfered screws into the unlocking holes of clamp collar B. Unlocking hole locations are colored in light blue in Figure 11. The unlocking holes for clamp collar B have threads in clamp collar B. Figure 11: Fenner Clamp Collar B Unlocking Hole Locations Collar B Collar C...
  • Page 11 SB236 Installing a Tsubaki Locking Device Before you begin, make sure that the drive chain is removed and the drive sprocket is removed from the drive shaft. 1. Remove all of the locking screws from the locking device. 2. Clean the inner surfaces of the sprocket bore and the drive shaft surface. Lightly lubricate both surfaces after cleaning.

  • Page 12: Drive Sprocket

    SB236 4. Place the locking device on the drive shaft using the following steps. a) Tighten two screws into unlocking holes on opposite sides until the taper rings separate as much as possible. Unlocking holes are shown in Figure 14. Figure 14: Unlocking Hole Locations = Unlocking = Locking...
  • Page 13 SB236 5. Torque the screws in the locking holes by using the following steps. a) Check the sprocket to see if the numbers of the locking holes are written on it. • If the sprocket has locking hole numbers written on it, make sure that the screws in the locking holes align with the numbers shown in Figure 16.
  • Page 14 SB236 Completing Installation of the Locking Device 1. Replace the chain using the following steps: a) Route the chain around the drive Figure 17: Chain Routing sprocket and the roller sprocket. The routing of the chain is displayed in red in Figure 17 Drive Sprocket b) Reconnect the ends of the chain using the master link.

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