Jun 17, 2022 - APPARATUS DEFECT

Your form has a new entry.

Here are the results.

Date	Jun 17, 2022
First and Last Name	Rob Rogers
Entry Type	APPARATUS DEFECT
APPARATUS DEFECT
UNIT	T715
Your entry
	T715 placed OOS this morning due to a broken coolant line on the driver's side. The black hose that runs along the oil filter housing started with a slow class 3 leak that appeared to come from small cracks in the hose. The leak progressed into a near complete draining of coolant after a section of the hose connected to a plastic "T" completely sheared off at the connection while troubleshooting and was unable to be repaired or sealed. CMF contacted via phone, they had the replacement parts available and sent the mobile technician out to repair to defect. The entire section of black hose on both sides of the "T" and the plastic "T" itself were replaced, fresh coolant added to the reservoir, engine ran and checked for further leaks. Once repaired T715 was placed back in service. Extra note regarding the CONSTANT coolant leaks: The technician stated that the Red "OAT" coolant is extremely corrosive. Since switching to that type of coolant, it has caused fleetwide issues with leaks due to hoses and other components being eaten away by the chemicals in conjunction with the high heat levels from the engine degrading the materials. The tech. stated that for about the past year RS742 has been testing the green coolant that was previously used to see if it causes the same issues. Supposedly it has worked in correcting the issue, however there is no ETA on when, or if, CMF will switch units back to the green coolant, or another type, to reduce leaks. I asked if we could switch to the green coolant as well and the Tech stated the decision has to come from the Fleet leadership, and it would be a fleetwide change. The tech recommended rinsing coolant off the engine during weekly and monthly cab tilts to help reduce corrosion of other components.
IF DEFECT, WAS A REPAIR REQUEST MADE?	YES