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NEWS | July 19, 2021

M88A2 Recovery Vehicles: Use Right Bolts to Install Engines Shrouds

Maintainers,

Some M88A2 engine oil coolers been damaged by the wrong hardware being used while installing the front/top engine shrouds.

If bolts that are too long are used to install the shrouds, they can crush the top of the engine oil coolers, NSN 2930-01-424-6731. The transmission coolers, NSN 2520-01-424-6732 and NSN 2520-01-422-4200, are also at risk of damage.
 
Using wrong bolts can damage engine oil cooler
Using wrong bolts can damage engine oil cooler

When installing the front/top engine shrouds, the correct bolt to use is NSN 5305-00-042-5598. This hex cap screw is 5/8 of an inch long and comes with an external tooth washer. 
 
Correct hardware prevents damage
Correct hardware prevents damage

When installing the hydraulic oil coolers on the rear of the engine, use cap screw, NSN 5305-00-269-3234, and lock washer, NSN 5310-00-637-9541. 
        
Using the correct hardware will keep cooler damage down, allowing the overhaul facilities to reuse the coolers, saving money.
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