SECTION 2 Page 36 MAINTENANCE 7. Lubricate the unloader cap with anti-seize compound. Lubricate the unloader body o-ring with engine oil. Assemble the unloader assembly to the cylinder head cover. Tighten the cap- screws Capscrews: 1 36 kgm WATER PUMP Every 6,000 hours or 3 years, visually inspect the water pump body for indications of water leakage at the weep hole. If a water leak is indicated, replace the water pump with a new rebuilt unit as necessary. Refer to the Troubleshooting and Repair Manual, Bulletin No. 3610246, for removal and replacement instructions. FAN IDLER PULLEY Every 6,000 hours or 3 years, measure the pulley end clearance.
The end clearance must be 0.05 to 0.25mm [0.002- to O.OlO-inch]. If the end clearance does not meet the above specifications, it must be rebuilt or replaced. Refer to the Engine Shop manual top rebuild or the Troubleshooting and Repair Manual for replacement procedures.