TM 5-4320-300-144-46. SPRINGS (CONT)Location/ItemActionRemarks2.FramePosition jack under frame between wheel to beraised and wheel chock. Jack up frame enoughto relieve tension on spring (usually just aswheel clears ground) and place jack stands underframe. Put a wood block under front leg if nec-essary, to further support trailer. The jack mayhave to be raised slightly to accomplish this.3.Rear standLower and pin rear stand if possible on sameside.4.SpringsLoosen nuts on U-bolts securing spring to axle.If much tension is noticed, adjust jack andjack stand support height to lessen tension. Re-move nuts and shackle. Remove spring boltsand nuts. Remove spring.INSTALLATION5.SpringPosition replacement spring and install springbolts and nuts. Tighten securely. Install U-boltsfrom the bottom side of the axle, and installshackle and mounting nuts. Tighten securely.6.Rear standIf rear stand was raised on same side, removepin.7.Front legRemove wood block from under front leg ifnecessary. Raise jack enough to remove jackstands.8.Trailer Lower trailer to ground.4-185
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