TM-9-2350-274-BD M109 Battlefield Damage Assessment and Repair Download
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TM 9-2350-274-BD ENGINE SECTION II. Engine Failure 3-4. ENGINE SUBSTITUTIONS General Information Availability of engines may become restricted to those found in damaged vehicles. Basic engines from other vehicles can be modified or configurations rearranged to fit the vehicle needing the engine (8V71T model 7083 engine will fit M107, M109, M110, Howit- zer, M578 Recovery Vehicle, and some NATO vehicles). The main difference of the 8V71T ❚ series is the turbocharger system. When substituting a replacement engine it may be nec- essary to remove the turbocharger system from the original engine and put on the substi- tution engine. The limiting speed dual–range governor (Recovery Vehicle M578 only) per- forms the same function as the limiting speed governor with the additional capability of limiting the maximum engine speed at two different values. A non–turbocharged engine can also be used as a substitute but the original turbocharger system must not be in- stalled on the non–turbocharged version. Cooling and exhaust connections may require improvisation to complete the installation. Limitations: ● Possible degraded mobility Personnel/Time Required: ● 3 Soldiers ● 6 hours Materials/Tools: ● Engine - M107, M109, M110, M578, or M975 ● Lift capability Procedural Steps: 1. Remove powerpack. 2. Separate engine from the transfer case. 3. Place the substitute engine beside the original engine. Change 3 3–3