Original from WW2 Army Motors….
Some of them cover common tools (that is, tools you can use on most all vehicles), and some cover special tools (designed for one vehicle, but maybe interchangeable on a few others).
Some are used as a basis of issue (mention ‘em and you can have anything that’s legal), and others aren’t. For those’ that aren’t, the Table of Organization and Equipment (T/O&E) is very often the basis of issue.
These are what we found:
1) Organizational Spare Parts and Equipment (OSPE). These are individual pamphlets for each make and model of vehicle. They tell what tools the vehicle itself carries (first-echelon tools), and what special tools the second .echelon will need to maintain it.
OSPE’s are used as a basis of issue.
2) Tool Sets, Motor Transport (SNL N-19). This one has a tool by-tool listing, with pictures, of everything in the second-echelon unit equipment sets (including the Armored Command sets), plus the hand-tool kits of general automotive mechanics and automotive specialists. It’s good only for identifying the tools in the sets; the basis for requisitioning sets is the company’s T /O&E.
3) Special Tools for Combat Vehicles (SNL G-175). Here’s where you find an ABC list of all tools used by any or all echelons for maintenance of combat vehicles. It has pictures, tells the stock numbers, piece-mark or drawing numbers, and SNL numbers for each and every tool. It is not a basis for issue (use the OSPE instead). Sorry, but there’s no publication like it for transport vehicles at present.
4) Interchangeability Chart of Organizational Special Tools for Combat Vehicles (SNL G-19).
This baby tells you how to save weight in your 2nd-echelon tool load, and at the same time help to avoid tool waste. It’s a cross reference to special tools that can be used on more than one vehicle. For instance, if you already have an idler-wheel puller (41-P-2940800) for maintaining the M12 Gun Motor Carriage, this SNL tells you the same tool will fit 15 other motor buggies. Like G-175, this one is for combat vehicles, and is published for information only. It is not to be used as a basis of requisitioning.
5) Tools, Maintenance, for Repair of Automotive Vehicles (SNL G-27) is a 3rd and 4th-echelon publication, for Ordnance outfits only. It lists their unit-equipment sets, their special tools for component parts of vehicles (such as voltage regulators, brakes, etc.), their special tools for specific makes and models of vehicles, and a few additional kinds of special equipment. This publication is a basis for requisitioning and issue of all special tool sets allowed to Ordnance organizations for maintenance of combat vehicles.
6) Shop SNLs. These give complete tool lists for certain types of shops-all of them Ordnance shops, with the exception of SNL N -23, which covers unit equipment for posts, camps, and stations.
So you see, gentlemen, this is what you will need:
For your vehicle tool set-the OSPE for your vehicle. It provides a basis for requisition, and identifies the tools with stock numbers and pictures.
If you have transport vehicles only, you’ll need your organizational T/O&E (as basis for requisitioning unit sets of common tools), SNL N-19 (for details of the tool sets), and each vehicle’s OSPE (as basis for requisitioning special tools).
If you service combat vehicles also, you’ll need in addition to the above, SNL G-175, which gives pictures and full identification of special tools for combat vehicles; and SNL G-19, which gives you the dope on interchangeability.
Ordnance shops will get most of their information from SNL G-27, including the basis of issue for special tools. Basis of issue for unit equipment sets of 3rd and 4th-echelon tools is contained in the organization’s T/O&E, but details of the sets are published in G-27. In addition, you can find pictures of special tools in SNL G-175.
If your outfit is covered by a shop SNL (and they’re rare-but consult the new OFSB 1-1 for the list), that will be your Bible, of course.