NEWS | May 11, 2020

HMMWV: Kinks Offer Hose Protection


Dear Half-Mast,
        
I’m trying to find an NSN for the metal cover designed to protect the upper radiator hose from damage by the generator belts. But I’ve had no luck finding it in the IETM, TM 9-2320-280-13&P.  Can you help?
                                                                                                           
SFC E.R.V.

Dear SFC E.R.V.,
        
Sure!  Truth is, there is no authorized metal cover. The metal cover you’re looking for was originally designed for the CUCV.  But it isn’t authorized for use on HMMWVs.
        
However, there’s a note in the Inlet Hose (radiator) Replacement section of TM 9-2320-280-13&P (Jan 14) that will help solve your problem.  The note says vehicles with a 200-amp alternator should have the inlet hose installed with the hose twisted counterclockwise and upward until a kink starts to form.
        
Twisting the hose slightly moves it enough to create some clearance.  That keeps the hose safe from the generator belts.   
        
Note that this only covers the following HMMWV models with the 200-amp alternator installed:
  • M1097/A1/A2/R1
  • M996/A1
  • M997/A1/A2
A slight counterclockwise and upward twist creates clearance between hose and generator belts
A slight counterclockwise and upward twist creates
clearance between hose and generator belts