Reassembly 1. Make sure shoulder of fl ywheel hub and adjacent face surface are clean and free of any nicks or damage. 2. Install crankshaft pulley adapter onto fl ywheel hub, so offset for pulley is out, and holes are aligned. Make sure adapter rests squarely on face of fl ywheel. 3. Assemble front and rear pulley halves placing shims as indicated. a. For a new belt: Assemble with 2 or 3 shims between pulley halves, and remaining shim (if any) on outside (front) of outer pulley half. b. For a used belt: Assemble with 2 shims between pulley halves and remaining shim(s) on outside (front) of outer pulley half. Install and snug pulley assembly.
Final belt tension and pulley assembly will be made after fan/upper pulley assembly is installed. 4. Install upper fan mounting bracket to intake manifold with screws. Torque: M6 Screws to 7.3 N·m (65 in. lb.) M8 Screws to 24. 4 N·m (216 in. lb.) By-pass hose and wires must be positioned within cutout in intake manifold. Be careful not to pinch harness wires between bracket and intake manifold when tightening. 5. If disassembled, reassemble fan and pulley assembly. Make sure one fl at washer is placed between bearings in hub. Other washer is located under front nut. Torque fan/pulley/hub mounting screws to 6.8 N·m (60 in. lb.). 6.
If fan shaft was removed from upper mounting bracket, apply Loctite ® 242 ® to rear threads. Install and torque rear nut to 15.8 N·m (140 in. lb.). Install fan and pulley assembly onto fan shaft and upper mounting bracket. 7. Apply Loctite ® 242 ® to front threads of fan shaft. Install fl at washer and nut to secure. Torque nut to 15.8 N·m (140 in. lb.). 8. Carefully work belt into place on pulleys. Check belt tension. There should be no more than 9.53 - 12.7 mm (3/8" - 1/2") belt defl ection per side with 10 lbs. of applied tension. If belt tension is low, remove belt and relocate a shim from between pulley halves to outside (front). Reinstall belt and recheck tension.
Repeat procedure until correct tension is reached. if shims have all been moved to outside, and belt is still too loose, replace belt. When proper tension is obtained, individually remove each capscrew, apply Loctite ® 242 ® to threads of lower pulley and reinstall. Torque four bolts in a criss-cross sequence to 24.3 N·m (215 in. lb.). 9. Mount RH and LH lower radiator supports with cross support bracket attached, to crankcase, using screws. Snug screws only at this time. Install Air Cleaner Assembly External Engine Components 1. Install a new elbow adapter gasket onto carburetor adapter. 2. Set air cleaner/mounting bracket assembly, with hose and elbow attached, in position on engine.
Align all of mounting holes. Start and fi nger tighten each of mounting screws. Make sure fuel line is outside of main bracket when installed. 3. Torque elbow mounting screws to 7.3 N·m (65 in. lb.). Then torque eight valve cover mounting screws to 6.2 N·m (55 in. lb.) in sequence shown. 4. If removed, install rain cap and secure with clamp. Check position of dust ejector, it should face downward. Adjust end cap position as required. 5. Connect wires for audible alarm, if used. 70 KohlerEngines.com 66 690 01 Rev. C D 1 3 C A 4 2 B A Radiator Assembly B Mounting Bracket C Air Cleaner Assembly D Torque Sequence