Engine - Engine and Mounting Section 110-0030 Using belt tension gauge, adjust the belt tension to the following values: Belts should be neither too tight nor too loose. Belts that are too tight impose excess loads on the crankshaft, fan and alternator bearings, shortening both belt and bearing life. Excessively overtightened belts can result in crankshaft breakage. A loose belt will slip and may cause damage to accessory components. Fan - Poly 'V' Belt Belt Tension 'New' - 3 340 N (750 lbf) Belt Tension 'Used' - 2 450 - 3 340 N (550 - 750 lbf) Alternator - 'V' Belt Belt Tension 'New' - 556 N (125 lbf) Belt Tension 'Used' - 445 N (100 lbf) SPECIAL TOOLS Note:
A belt is considered 'Used' if it has been in service for 10 minutes or longer. If the used belt tension is less than the minimum value, tighten the belt to the maximum value. Refer to Section 300-0070, SERVICE TOOLS, for part numbers of tools referenced in this section, general service tools required, and service tools which should be used in conjunction with procedures oulined in the engine manufacturers service manual. These tools are available from your dealer. * * * * SM 1571 12-98 11 SPECIAL TORQUE SPECIFICATIONS TORQUE FIG. NO. ITEM NO. ITEM NAME Nm lbf ft 1 1 1 1 - 7 22 51 62 - Bolt Bolt Bolt Bolt Fan Hub Mounting Bolts 150 34 81 - 95 81 - 95 101 - 126 110 25 60 - 70 60 - 70 75 - 93