Besides grinding bearings it polishes the shafts: aligns bearings and valve seats; helps to lap pistons and rings and gives a high ... WILL NOT SCRATCH. ... The Standard WRENCH Little Rock, Ark. RENCHES that are made for the hardest service. ... You should go over each connection carefully, replacing those parts that cannot. be tightened; otherwise it will be ... (H. F. S., Lafayette, Ind.) I am told that with the Ford type planetary transmission the reverse may be used as a brake, whileanbsp;...