SWITCH AS 5677817 - Caterpillar

Illustration 5 g02237477
Clean both side of the oil pan gasket contact surfaces and the contact surfaces of other parts thoroughly.
Apply the sealant (three bond 1212) to the mating surface clearance of the No.1 and No.4 main bearings and crankcase. The filling amount should be approx. 5.0 mm (0.20 inch) protruding from the mating surface clearance (A). Enough to spill out when the oil pan gasket is installed.
Install the oil pan gasket to the crankcase under face, with pushing the gasket circular part into the No.1 and No.4 main bearing cap grooves. Pushing the gasket protrusion into the mating surface clearance where sealant is filled.
For press oil pan tighten the mounting bolts (7) to 8 1 N m (71 9 lb in). For cast oil pan tighten the mounting bolts (7) to 30 3 N m (22 2 lb ft).Inverting crankcase
Note: Do not place the engine directly on the ground. It causes cracking the oil pan.
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Attach the wire rope to the crankcase. Using a crane, hoist the crankcase and lay the crankcase with side faced downwards.
After that, hoist the crankcase again and invert the crankcase.Installing front idler gear
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Timing gear train (8) Crankshaft gear (9) Inspection pump gear (10) Idler gear (11) Camshaft gear
Apply engine oil to the idler gear shaft (13) .
Install the idler gear with all match marks on it aligned with the marks on the other gears.
Illustration 8 g02237481
Install the thrust plate (12) with hole matching the pin of the idler gear shaft.
Tighten the thrust plate bolt to the specified torque.
Move the idler gear back and forth, and make sure that there is end play.Inspecting and adjusting timing gear after installation
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Be sure to inspect and adjust the timing gear when the timing gear has been reassembled.
Table 1
Item     Standard     Limit    
Backlash     Crankshaft gear to idler gear    
0.030 to 0.160 mm (0.0012 to 0.0063 inch)    
0.250 mm (0.0098 inch)    
Idler gear to camshaft gear
0.040 to 0.170 mm (0.0016 to 0.0067 inch)    
0.250 mm (0.0098 inch)    
Injection pump gear to idler gear
0.030 to 0.180 mm (0.0012 to 0.0071 inch)    
0.250 mm (0.0098 inch)    Installing oil seal
Illustration 10 g02237483
Install oil seal to the timing gear case using installer (14), and make sure that oil seal is flush with timing gear case.Installing timing gear case
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Install the baffle plate to the crankcase.
Install the gasket and the timing gear case to the crankcase aligning with the dowel pin located on the crankcase front side.
Tighten the 40.0 mm (1.57 inch) bolts (15) to 12 1 N m (106 9 lb in)
Tighten the 50.0 mm (1.97 inch) bolts (16) to 12 1 N m (106 9 lb in)Installing crankshaft pulley
Note: The bar could come off. Be careful.
Illustration 12 g02237513
Apply the engine oil to the oil seal contact surface (17) of the crankshaft pulley.
Drive into the crankshaft pulley aligning with the crankshaft key.
Prevent the crankshaft turning using the threaded hole at the rear end of the