Crewmen, slave start your M1A2 SEP tank the wrong way and you can seriously damage the generator drive shaft and the vehicle’s charging system.
A broken generator drive shaft makes your tank NMC. Replacing the shaft is a big headache because the power pack has to be pulled. In some cases, you may even have to replace the transmission.
You can avoid a lot of trouble and expense by slave starting your tank the right way. The steps in bold are different from what’s in the TM:
- Ensure all electronics are powered down on both the live tank and dead tank, including the Force XXI Battle Command Brigade-and-Below (FBCB2).
- To prevent damage, the external slave receptacle should be used whenever the situation allows. On both tanks, connect the battery box power cable by removing the protective cap and remounting the cable from the storage position to the power receptacle.
- For tanks equipped with 4.4.01 and earlier software, set the left battery compartment circuit breaker to OFF.
- Turn on Master Power for the live tank.
- Start the live tank.
- Plug the slave cable into the live tank.
- Plug the other end of the cable into the slave receptacle on the dead tank.
- Turn on Master Power for the dead tank.
- Check that the Parking Brake Set message appears on the improved driver’s integrated display (iDID) of the dead tank.
- Set tach idle on the live tank to ON.
- With iDID on the main menu, press the Power Sources pushbutton on both tanks.
- Make sure M is highlighted on the NATO UTL PWR A/M pushbutton on both tanks.
- Press the Battery Start P/A pushbutton until A is highlighted on the dead tank.
- Wait until the dead tank reaches 26 volts. This could take 15 minutes to one hour.
- Start the dead tank.
For vehicles equipped with 4.4.01 and earlier software, follow these instructions set the left battery compartment circuit breaker to ON.
- With iDID on the main menu, press the Power Sources pushbutton on both tanks.
- Make sure A is highlighted on the NATO UTL PWR A/M pushbutton on both tanks.
- Remove the slave cable from both tanks.
- Re-cap the slave receptacles.
- Let the dead tank recharge its batteries for a minimum 30 minutes using its own generator with tach idle on.
Drivers, that grinding noise you hear when you shift your Stryker’s transfer case into low gear on the fly is more than just annoying. It could mean that you’ve done some serious-and expensive-damage to the transfer case.
You must bring your vehicle to a complete stop before shifting the transfer into low. If you don’t, the transfer case might start complaining loudly. Vital parts can crack, meaning you might be unable to shift it at all. Replacing the transfer case will set your unit back more than $21,000 for a flat bottom Stryker and more than $38,000 for a double V-hull Stryker!
Here’s the right way to shift your Stryker’s transfer case into low gear:
- Come to a full stop.
- Apply the service brakes.
- Put the transmission in neutral.
- Apply the parking brake.
- Shift the transfer case to low.
- Release the parking brake.
- Put the transmission in D (drive).
Now you’re ready to drive without doing any damage.
The BB-2590/U rechargeable lithium-ion battery is great because it’s lightweight and its charge lasts a long time. But if you don’t charge it the right way, you could be in for trouble.
Using chargers with out-of-date software can cause a fire. One recent fire caused $5.5 million in damage! Follow these tips to avoid expensive damage to equipment and personnel injuries:
- Battery maintenance. First, fully charge lithium-ion rechargeable batteries before using them the first time and at least once a year afterwards. Don’t use commercial versions of Army-issued batteries or chargers. They aren’t approved for military use.
Batteries approved for military use will have a contract number above the date code. Military-approved chargers have the contract number listed on the charger faceplate.
- Inspection. Check the program label on your charger to find if its software needs to be updated. The correct software version is Program H for PP-8498/U soldier portable chargers (SPC), NSN 6130-01-495-2839, and Program C for PP-8481B/U vehicle mounted chargers (VMC), NSN 6130-01-527-2726. Note that the PP-8481A/U charger on the move (COTM), NSN 6130-01-494-9164, cannot be updated.
- Software update. If you need updated software, go to this website to download and install the correct version:
You’ll need a USB-to-serial cable such as NSN 6150-01-558-7214, or a DB9 male to DB9 female serial cable with straight through connections. Do not use a null cable.
- Monitored charging. If you have to charge batteries before you can update your charger’s software, don’t leave the charger unattended. That’s a fire hazard. Signs of trouble include batteries that are hot to the touch or have smoke coming from them. It’s a good idea to always keep a fire extinguisher on hand while the charger is in use.
Also, don’t charge more than two batteries at the same time if the software is out of date.
Check out the user manual or the matrix printed inside the charger lid. Both’ll tell you how to properly interpret the charger lights so you can avoid overcharging the batteries.
PM Mission Command has added several Fire Support Command and Control (FSC2) Systems to the Maintenance Master Data File (MMDF). The 5 LINs/8 NSNs added are as follows:
The MMDF is a USAMC Logistics Support Activity (LOGSA) product that identifies the Army’s readiness-reportable equipment and systems. If your equipment is in the MMDF that means you must report its readiness status. That requirement is found in Para 2-6b of AR 700-138, Army Logistics Readiness and Sustainability (Feb 04). It applies to Active Army, Army National Guard and Army Reserve.
You should also review AR 750-1, Army Materiel Maintenance Policy (Sep 13), for additional guidance.
Where to Find the MMDF
You’ll find it online in the LOGSA Logistics Information Warehouse (LIW):
Request access through your supervisor and security manager. For MMDF issues or support, call DSN 645-9682, (256) 955-9682, or email:
Got FSC2 Questions?
For FSC2 Systems questions, contact Scott (Scottee) Welsh, DSN 648-1012, (443) 395-1012, e-mail:
Adam Santini, DSN 648-1013, (443) 395-1013, email:
Mechanics, your Chinooks come with primary covers for different parts of the aircraft. You’ll find these covers listed in the TMs.
In case you don’t have the primary covers on hand, the Chinook headshed has provided three approved alternate covers for the pitot tube, the T-714 engine, and the rotor head:
|Pitot tube cover||01-645-1206|
|T-714 engine maintenance cover||01-646-0357|
|Rotor head maintenance cover||01-646-0358|
These covers come from a third party source and the NSNs won’t be added to the TMs, so make a note. If you order the covers, you have the option of a free, three-part, on-site training session from the manufacturer. To arrange for the training, contact:
Shield Technologies Corporation
The three part training covers:
- information about the unique anti-corrosion cover technology and how it benefits your aircraft and equipment.
- hands-on training to properly install, remove and care for the covers.
- a CD with written instructions on how to properly install, remove and care for the covers.
The CD also helps train new Soldiers and provides refresher training.
The training prevents damage to aircraft, components and equipment, while extending the life of the covers. Primary Cover NSNs
Here’s a list of the primary covers for the Chinook. Keep this as a handy reference.
|1||Engine exhaust cover||01-593-9707||CH-47-202|
|2||Forward rotor head cover||01-593-9690||CH-47-063|
|3||FWS XMSN oil inlet cover||01-593-9716||CH-47-068|
|Aft rotor hub cover||01-593-9723||CH-47-064|
|4||Hyd/oil cooler exhaust vent cover set||01-593-9684||CH-47-067|
|5||APU tail cone exhaust cover||01-593-9515||CH-47-150|
|6||Center console set cover||01-593-9662||CH-47-127|
|7||Air inlet and oil cooler exhaust cover||01-593-9697||CH-47-124|
|8||Cockpit enclosure (windshield and nose)||01-593-9636||CH-47-128|
|9||Aircraft engine right-hand cover||01-593-9359||CH-47-060|
|10||Aircraft engine left-hand cover||01-539-9488||CH-47-059|
Note: Both 9 and ten depict covers designed for two configurations, one with and one without the external air particle separator (EAPS) and engine exhaust installed.
The manufacturer of these covers will also provide hands-on training if requested.
The POC is:
Mechanics, the last time we told you about the unit maintenance aerial recovery kit (UMARK), it was about checking for defective slings (https://www.logsa.army.mil/psmag/archives/PS2011/703/703-38-39.pdf).
Here’s some additional information to keep your UMARK, NSN 8145-01-487-0841, in operation. The UMARK has everything you need for aircraft recovery. The entire system comes in three boxes. Here’s a list of NSNs to keep handy for a quick parts inventory:
|UMARK Box 1, Slings|
|UMARK usage tracking form|
|Green/white sling, 12 1/2 feet||3940-01-538-5739||94D519-1|
|Blue/white sling, 30 feet||3940-01-538-9499||94D519-4|
|Red/white sling, 17 1/3 feet||3940-01-539-1505||94D519-3|
|Yellow/white sling, 13 3/4 feet||3940-01-539-0534||94D519-2|
|Black/white sling, 10 feet||3940-01-538-6784||94D519-5|
|Black/white sling, 30 feet||3940-01-538-6732||94H520-1|
|Black/white sling w/bridle attachment, 30 feet||3940-01-538-5218||94H520-2|
|Sling retainer assembly||3940-01-543-9075||1012736|
|Sling sheath, 34 inches||1650-01-632-6759||1024781-1|
|Sling sheath, 6 feet||1650-01-632-6753||1024781-3|
|UMARK inventory card case 1||1037403-001|
|UMARK Box 2, Crossbar Assembly|
|UMARK inventory card (case 2)||1037403-003|
|UMARK Box 3, Link/Lifting Assembly|
|Box link assembly||3940-01-538-9452||94C524-1|
|Sling link assembly||3940-01-538-0291||94H523-1|
|25K clevis assembly||4030-01-539-0567||94D514-1|
|Lifting clevis assembly||5340-01-539-1932||94D509-1|
|CH-47 hook thimble||4030-01-549-4538||94C533-1|
|AH-1 mast wedge||1680-01-539-3155||94D529-1|
|UH-1 square wedge||5340-01-538-4723||94D528-1|
|OH-58D sight wedge||5430-01-538-5104||94D527-1|
|Fixed length tie-down||1670-01-538-2808||94C522-1|
|Adjustable length tie-down sling||1670-01-538-2835||94H521-1|
|OH-58C mast wedge||5340-01-538-4862||94D530-1|
|Shackle, 6 1/2-ton||4030-01-568-0061||1020496|
|Blade pole assembly||1730-01-617-3781||94J531-1|
|Sling sheath, 8 feet||1650-01-632-6756||1028532|
|UMARK inventory card||1037403-005|
If you maintain or use the helmet operational level tester (HOLT), NSN 4931-01-534-1228, for the Apache integrated helmet and display sight system (IHADSS), make sure you have the latest version 8 software update.
The previous update, version 7, had reset issues that kept the HOLT from functioning properly during start-up. To determine which software version your HOLT has, turn the power switch to the ON position. The software version will be listed on the second line of the first screen of the built-in test (BIT).
If your HOLT has the wrong software update, get a software update kit by contacting James Casto at (586) 282-1359 or by email:
Be sure to provide a good shipping address and POC so an upgrade kit can be mailed to you.