New Engine Conversion Kit


The M113-series FOV’s heater box-equipped engine, NSN 2815-01-248-7644, is being phased out through attrition. It’s replacement is the glow plug-equipped engine, NSN 2815-01-412-2715.


If you have an M113 that’s due for an engine replacement, order the new version. Keep in mind that you’ll need the glow-plug conversion kit, NSN 2815-01-653-9437. The kit upgrades the electrical system so it can accept the new engine.


You’ll find the instructions for installing the conversion kit in TM 9-2350-277-13&P in IETM EM 0321 (Oct 14).

Questions? Contact Christopher Faiola at DSN 786-8291, (586) 282-8291, or email:

or Floyd Perry at DSN 786-8290, (586) 282-8290, or email:

or Richard Darling DSN 786-2517, (586) 282-2517, or email:


GCSS-Army Turn-in Credit      

GCSS-Army has its own set of document numbers. Once the customer is issued a glow plug-equipped engine, NSN 2815-01-412-2715, a ZRL (return delivery to SSA) purchase request document is created. The ZRL document number is eligible for credit for 180 days.

The customer then turns in the heater box-equipped engine, NSN 2815-01-248-7644, with a ZXS (excess requisition) document since the return has no corresponding issue. The ZXS document will be assigned a return advice code (RAC) of 1W.

The SSA will need to manually match the -7644 return receipt against the -2717 issue document and manually remove the RAC to allow the system to generate credit. The SSA will also need to manually close the ZRL document so that it doesn’t match to another turn-in receipt.

Note: The issue and return MILSTRIP document numbers will be different.


Tighten Up Loose Starter Bolts

Mechanics, the bolts that mount your FMTV or HIMARS starter to the engine have a bad habit of coming loose. In some cases the starter loosens enough that the end housing on the starter cracks or breaks.


Keep the bolts tight with this two-step process:

  1. Whenever the starter is removed, make sure the starter bolt’s threads are cleaned real good-like.
  2. Put a dab of sealing compound on the bolt’s threads and torque ‘em to 42-52 lb-ft. Get a 50ml bottle of sealing compound with NSN 8030-01-014-5869. Or use NSN 8030-01-104-5392 to get a box of ten 10cc bottles


Stop Needless Battery Replacement

Operators, it’s no secret that M400W compact-skid loaders have an ongoing problem with battery drain.

Most of these vehicles use the yellow-top Optima batteries. Even though they’re high quality batteries, they can’t stand the constant drain by the loader’s electrical system. The constant discharge leads to sulfated plates. Over time, the Optima battery can no longer be charged and has to be replaced. The end result is way too many dead batteries in these skid loaders. And the cycle continues.

Here are four ways to stop needless battery replacement:

o Start the skid loader weekly and run it for an hour.

o Every other week, plug a charger into the vehicle’s NATO receptacle and fully charge the battery set. The ProHD, NSN 6130-01-500-3401, is an approved charger that comes with the SATS.

o For long-term storage, make sure you disconnect the skid steer loader’s batteries.

o For skid loaders stored outdoors in the motor pool, use a solar charging system, like the Solar Pulse Monitor System, NSN 6130-01-558-5371. It simply plugs into the NATO receptacle and no modifications are needed.