TM 5-3825-226-24 GAUGE INSTALLED (Typical Example) 1.  3B7722 Bushing.  2.  9S8138 Pressure Gauge. The  front  housing  has  several  plugs  that  give access to water passages inside the housing. DYNAMOMETER TEST CAUTION To prevent possible damage to an engine while testing    on    a    dynamometer,    the    water    temperature regulators     must     be     installed     and     shunt     line     (2) connected as shown. SHUNT LINE CONNECTED TO ENGINE (Typical Example) 1.  FT790 Cooling Tower Group.  2.  Shunt line. V-BELT TENSION CHART WIDTH TOP BELT TENSION BELT TENSION WIDTH OF PULLEY “INITIAL” “USED” BORROUGHS GAUGE NUMBERS BELT SIDE BELT TOP GROOVE GAUGE READING GAUGE READING In. mm In. mm lb. N lb. N OLD GAUGE NO. NEWGAUGENO. 3/8 .422 10.72 .380 9.65 100 + 5 445 + 22 90 + 5 400 ±  22 BT-33-73F BT-33-95 1/2 .547 13.89 .500 12.70 120 + 5 534 + 22 90 + 10 400 ±  44 BT-33-96-4-16 BT-33-95 5V .625 15.88 .600 15.24 120 + 5 534 + 22 90 + 10 400 ±  44 BT-33-72-4-15 BT-33-72C 11/16 .688 17.48 .625 15.88 120 ±  5 534 + 22 90 + 10 400 + 44 BT-33-72-4-15 BT-33-72C 3/4 .750 19.05 .690 17.53 120 ±  5 534 + 22 90 ± 10 400 + 44 BT-33-72-4-15 BT-33-72C 15/16 .938 23.83 .878 22.30 120 + 5 534 + 22 90 + 10 400 + 44 BT-33-72-4-15 BT-33-72C MEASURE TENSION OF BELT FARTHEST FROM THE ENGINE ”INITIAL" BELT TENSION is for a new belt. ”USED" BELT TENSION is for a belt which has more than 30 minutes of operation at rated speed of engine. A10232X5 BASIC BLOCK CONNECTING RODS AND PISTONS Use    the    5F9059    Piston    Ring    Expander    to remove or install piston rings. Use   the   5P3524   Piston   Ring   Compressor   to install pistons into cylinder block. Tighten the connecting rod nuts in the following step sequence: 1. Put   engine   oil   on   bolt   threads   and   seating surfaces of cap and nut. 2. Tighten both nuts to 30 + 3 lb.  ft.  (40 + 4 N-m). 3. Put a mark on each nut and cap. 4. Tighten each nut 600 from the mark. The connecting rod bearings should fit tightly in the bore in the rod.  If bearing joints or backs are worn (fretted),  check  for  bore  size  as  this  is  an  indication  of wear because of looseness. 2-72