M44-Series 2.5-Ton 6x6 Truck Brake Vent Modification

This page contains excerpts from PS Magazine (a monthly magazine published by the US Government for Army personnel involved in maintenance) which describe how to perform a necessary brake vent modification on M44-series 2.5-ton 6x6 trucks such as the M35 cargo trucks or my M109A3 shop van. I used to have a couple of pages with many PS Magazine excerpts with 2.5-ton and HMMWV tips, but they are no longer necessary now that you can download individual articles from 1988 on at the PS Magazine web site. I kept these particular excerpts here because the vent line modification was published in 1983, and is not yet available on the PS Magazine web site. It's a very good idea to check the PS Magazine index for other articles which may apply to your truck. For example, there's an article in issue 542 (January, 1998) which describes a necessary brake light switch modification which replaces the old hydraulic pressure actuated switch, which could blow out and leave you rolling without brakes!

File	Size	Issue/Page	Description
BrakeVentCheck.jpg	105k	PS 555 (Feb 99), p5	Checking for brake vent line modification
BrakeVentFix1.jpg BrakeVentFix2.jpg	122k 59k	PS 364 (Mar 83), p18-20	Brake vent line modification

Here are more detailed descriptions of the parts needed for the M44A2-series version of the modification. I have not performed this modification yet, so please let me know if you find any mistakes.

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