TM-9-2320-280-20 HMMWV Technical Manual Unit Maintenance Volume 1 Download
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TM 9-2320-280-20-1 REFERENCE INFORMATION Make sure that the area where you conduct these teats is free of natural and man-made obstructions. Failure to do so may result in serious injury. Visualty inspect steering components: 1. Check all four tires and rims for wear, inflation, damage, or warping. a. Adjust tire pressure (TM 9-2320-280-10). b. Replace my unserviceable rims (para 8-4). 2. check steering linkage for damage. a. Replace any damaged steering Iinkage components (para 3-12). b. Lubricate steering linkage (TM 9-2320-280-10). 3. Check power steeing fluid for contamination and level (TM 9-2320-280-10). a. Drain and replace any fluid that appears black and smells burned. b. Bleed air from system where fluid appears milky white (para 8-29). 4. Check pump drivebelts for fraying, cracks, damage, or misadjustrnent. a. Replace unserviceable power steering drivebelts (para 3-80). b. Adjust loose power steering drivebelts (para 3-82). While travelling at a moderate speed (20mph) (32 kmph), apply the brakes while applying minimal pressure to the steering wheel. If pull to one side or the other occurs, make a note of the speed at which it occurs and on what side of the vehicle it occurs. Repeat this procedure for different speeds and braking forces. If the vehicle seems to steer straight while braking, then there probably isn’t a problem with the brakes (at least not one that affects the steering). If the braking action feels strange in anyway, then the brake diagnostics should be run to assure vehicle safety. TM test will usually reveal problems with frozen brake calipers. If the wheels are out of alignment or if the tires are worn unevenly, vehicle may wander. Symptoms of bad steering characteristics include hard steering, excesssive play in steering, a momentary increase in steering effort when turning wheel quickly, end jerking of the steering wheel when turning. STEERING SYSTEM 2-461