. OPERATION TROUBLESHOOTING METHOD OF LOWERING DUMP BODY IN EMERGENCY WARNING (F) and release the remaining 3 - 140 There is danger of being trapped b y the dump bo dy, so w hen lowering the dump body in an eme rgency, always carry out the operation from the ground and do not go under th e dump body When the dump body needs to be lowered to the sea t while the engine cannot be started for some trouble, perform the following pro 1. pressure in t he hoist circuit 2. Loosen lock nut (2) of manu al lower valve 3. Turn grip (3) of valve (1) co unterclockwis The oil in th e hoist cylinder 4. and the dum When the du p body lowers.
mp body goes down to the desired position, turn grip (3) clock wise to close t he valve, then tighten locknut (2). If the dump body does no t go down ev en wh method is us ed, consult yo ur Komatsu di stributo he above