Millwright (MIL)

2013 Outline - Second Period Package (39 Modules) Comments

Date: 9/27/2022 12:24:28 PM
Module: 160201c
Version: 24
Page: 19
Comment: In the first bullet in the middle of the page the temperature in bracket "68" degrees F and should be "36" degrees F. The text is talking about a "change" of 20 degrees C. In degrees F that would be 36 degrees (20 x 1.8).
Status: Approved for Review

Date: 10/3/2022 11:25:05 AM
Module: 160201fB
Version: 24
Page: 5, 6
Comment: The text for "Drip Feed" is actually for "Constant Level" oilers. The drip feed oilers are a manual oiler. Someone needs to move the "snap lever" as you can see in figure 4, before any oil is added to the lubrication point. Also figure 5 is incorrect. The oil level is maintained at the top of the control arm, not the bottom. Trico Corp. calls this the control point on their constant level lubricators. There is a good document (The Constant Level Oiler – Understanding the Lubrication Principle) on their website. It also gives a good description on how the function.
Status: Approved for Review

Date: 10/3/2022 11:25:45 AM
Module: 160201fB
Version: 24
Page: 5, 6
Comment: More description for the comment that I just sent. The first bullet pertains to constant level lubricators but not drip feed lubricators. The second bullet pertains to drip feed lubricators but "constant level cup" should be replaced with something like "drip feed reservoir" or "drip feed bottle" to avoid confusing it with the Constant Level Lubricator. I think the confusion is that there are two types of lubricators that "drip" oil into the lubrication point (drip feed lubricator and constant level lubricator). Figure 4 (on page 5) is a drip feed lubricator and Figure 5 (on page 6) is a constant level lubricator.
Status: Approved for Review

Date: 10/3/2022 11:26:30 AM
Module: 160201fB
Version: 24
Page: 4
Comment: In Table 2 under "Disadvantages". the 3rd comment down should read "...with wax deposits" not "...with was deposits"
Status: Approved for Review

Date: 10/5/2022 11:25:36 AM
Module: 160202a
Version: 24
Page: 13
Comment: The text between the bottom two notes doesn't apply to to what content (horizontal misalignment). No shims involved in making a horizontal move. Should be removed.
Status: Approved for Review

Date: 10/5/2022 11:07:44 AM
Module: 160204a
Version: 24
Page:
Comment: This module causes confusion for the student because it isn't consistent in the figures. Sometimes the Fixed machine is on the left and the MTBM is on the right and in others it shows the Fixed on the right and the MTBM on the left. The graphics have been labeled correctly but it causes confusion for someone just learning the process. I suggest having all the figures show the Fixed on the right and the MTBM on the left. I feel that way because that is how we build the graph. We have the "A" dial on the far right side of the graph and work to the left to plot "B" dial and the feet on the MTBM. The figures that show the Fixed machine on the left are 6 and 9-14. If we could flip these graphics and correct the labeling all would be good. Some editing of the text may also be needed. Not a big job.
Status: Approved for Review

Date: 10/7/2022 9:44:52 AM
Module: 160205b
Version: 24
Page: 12
Comment: In the graphic in Figure 8 it shows "E" and it should show "E=?"
Status: Approved for Review

Date: 10/7/2022 9:45:05 AM
Module: 160205b
Version: 24
Page: 13
Comment: On the right side of Figure 9 it Reads "ED=", "LD=", and "ED=". It should read "E=", "L=", and "E="
Status: Approved for Review


Archived Comments

Year: 2021

4/30/2021 1:07:57 PM
Module: 160404b
Version: 21
Page: 3
Comment: The paragraph just above figure 3 states in the last sentence that the balance holes are to improve efficiency. They are to improve shaft thrust characteristics but actually reduce efficiency and head because of fluid re-circulation. Change this sentence to read "... may have balance holes to reduce thrust." Check out this article on the relationship between balance hole size and the efficiency and thrust reduction. https://iopscience.iop.org/article/10.1088/1755-1315/240/3/032017/pdf
Status: Implemented

4/30/2021 12:55:13 PM
Module: 160404b
Version: 21
Page: 15
Comment: Figures 15 A and B are difficult to interpret. Please use colouring to create differentiation between the moving components (impeller) and the diffuser vanes.
Status: Implemented

Year: 2020

5/14/2020 10:08:36 AM
Module: 160202f
Version: 21
Page: 16
Comment: Figure 22. Pressure angle should read 14 1/2 degrees not 14.
Status: Implemented

5/13/2020 11:47:29 AM
Module: 160202dB
Version: 21
Page: 24
Comment: Figure29. This is not a picture of fitting a QD bushing. Picture of a person torqueing the front balancer on a engine.
Status: Implemented

5/13/2020 11:24:54 AM
Module: 160202dB
Version: 21
Page: 14
Comment: Figure 15 and 16. Not showing the difference between a pully and a sheave. Fig 15 is completely wrong. Showing a V belt arrangement (sheave) not a pully.
Status: Implemented

5/13/2020 10:47:18 AM
Module: 160202dA
Version: 21
Page: 17
Comment: Figure 19. Bad picture/ labeled wrong. I wish that all the old pictures were put back from Goodyear and Gates.
Status: Implemented

5/13/2020 10:42:56 AM
Module: 160202dA
Version: 21
Page: 10
Comment: Figure 10. Bad picture of double V belt. Replace or put back old picture.
Status: Implemented

5/13/2020 10:40:33 AM
Module: 160202dA
Version: 21
Page: 10
Comment: Figure 9. Bad picture of banded belt. Replace or put back old one.
Status: Implemented

5/13/2020 10:38:39 AM
Module: 160202dA
Version: 21
Page: 9
Comment: Figure 8. Old picture was better.
Status: Implemented

5/13/2020 10:36:59 AM
Module: 160202dA
Version: 21
Page: 4
Comment: Figure 2. Wrong figure # and description. Put back parts of a V-belt courtesy of Goodyear.
Status: Implemented

5/13/2020 9:34:00 AM
Module: 160202a
Version: 21
Page: 13
Comment: Figure 14. Remove dash. 14-125
Status: Implemented

5/13/2020 9:32:26 AM
Module: 160202a
Version: 21
Page: 5
Comment: figure 5. Bad picture. Find a better one or put back Martin picture. How come some Martin pictures are O.K but not others? Figure 7 from Martin is O.K but not figure 5 is not/
Status: Implemented

5/7/2020 1:39:11 PM
Module: 160201dB
Version: 21
Page: 7
Comment: Figure 5. The A&B are reversed. Should read antifriction A and Plain bearings B
Status: Implemented

5/7/2020 9:26:38 AM
Module: 160201dA
Version: 21
Page: 33
Comment: Figure 40. No reference to figure 40 In description.
Status: Implemented

5/7/2020 9:23:09 AM
Module: 160201dA
Version:
Page: 7
Comment: Figure 7. Wrong picture. Put back SKF. Picture of crank shafts not of bearing and housing.
Status: Implemented

5/5/2020 1:27:41 PM
Module: 160201bB
Version: 21
Page: 41
Comment: Figure 37. Extra "courtesy of"
Status: Implemented

5/5/2020 1:25:51 PM
Module: 160201bB
Version: 21
Page: 28
Comment: Figure 24. Mislabeled
Status: Implemented

5/5/2020 1:22:32 PM
Module: 160201bB
Version: 21
Page: 22
Comment: Figure 18 Wrong picture. Should be narrow feeler gauge not wide. Put back Starrett picture.
Status: Implemented

5/4/2020 1:54:44 PM
Module: 160201bA
Version: 21
Page: 21
Comment: Figure 28 Mislabeled. There is 2 figure 28. Second should be Tapered roller bearings. Overall this module should return to the previous version.
Status: Implemented

5/4/2020 1:47:51 PM
Module: 160201bA
Version: 21
Page: 19
Comment: Figure 27. Not a drawn cup needle bearing. Return SKF picture.
Status: Implemented

5/4/2020 1:44:27 PM
Module: 160201bA
Version: 21
Page: 10
Comment: There is 2 figure 10s. Should be 11, and reworded to match.
Status: Implemented

5/4/2020 1:39:05 PM
Module: 160201bA
Version: 21
Page: 4
Comment: Figure 3. Not the best picture. Return SKF picture.
Status: Implemented

5/4/2020 1:36:38 PM
Module: 160201bA
Version: 21
Page: 10
Comment: Figure 11 is miss labeled.
Status: Implemented

5/4/2020 1:33:58 PM
Module: 160201bA
Version: 21
Page: 10
Comment: Figure 10 is the wrong picture of maximum capacity bearing. Return the SKF picture.
Status: Implemented

3/24/2020 8:53:34 AM
Module: 160202b
Version: 21
Page: 22
Comment: The first line in the description of the pin and disc coupling is incorrect. It has been copied from the previous page describing the splined rubber coupling.
Status: Implemented