Heavy Equipment Technician (HET)

Second Period Package (35 Modules) Comments

Date: 10/26/2022 9:40:46 AM
Module: 190201a
Version: 21
Page: 11
Comment: In the formula for Volumetric Efficiency, the actual cylinder volume shows 150 cu³. It should show 150 in³.
Status: Approved for Review

Archived Comments

Year: 2021

4/2/2021 9:58:29 AM
Module: 190201f
Page: 31
Comment: At the self test question 13. List three basic functions of the flywheel. Self test answers page 34. 13. The vibration dumper counter acts or opposes the twisting forces acting on the crankshaft , reducing torsional vibration. Comment: the word "flywheel" should be changed on "vibration dumper"
Status: Implemented

1/25/2021 8:45:51 AM
Module: 190202dA
Version: Version 21
Page: 11
Comment: Water and Antifreeze Coolant Mixtures. the third line "Most antifreeze products involve ethylene glycol, propylene glycol, or carboxylate. This sentence infers that carboxylate is a base solution as the other two are, but in fact it is just a trace additive such as nitrates or other forms of organic acids. I researched the msds's of several OAT based coolants and they all list ethylene glycol as the main ingredient in quantities of 88-98% by weight. Not one msds of any OAT or Nitrate stabilized coolant even lists carboxylate(an organic acid) as an ingredient; likely due to its use as a trace product. The term is also used in a similar manner in the paragraph that follows it in the ILM.
Status: Implemented

Year: 2019

12/2/2019 3:11:05 PM
Module: 190203e
Comment: Being in this department going on 6 years now, every intake and semester the same comments come from the students. CAN WE PLEASE GET COLOR ILM's. I have color in my presentations, but the students only get black gray and white pictures. From the instructor side could we please get color ILM's for all periods and semesters for our students. They all agreed that if the price went up for ILM's they wouldn't mind paying the extra. Being able to see different colors in diagrams make learning easier for the students.
Status: Implemented