RECEPTACLE AS-CONNECTOR 3E3388 - Caterpillar

Specifications
Table 1
Parameter Value
Camshaft gear bolt torque 25 1 N m (18 1 lb ft) plus 45 degrees
Rocker arm bolt torque 100 10 N m (75 7 lb ft)
Timing wheel bolt torque 23 2 N m (17 1 lb ft) Introduction
Use this procedure to check and/or adjust the camshaft and flywheel timing.Required Tools
Table 2
Required Tools for Camshaft Timing
Qty Part Number
1 487-3130 Tool
1 487-3131 Spacer
1 456-7990
1 487-3141 Timing Fixture
1 456-7997
Table 3
Required Tools for Flywheel Timing
Qty Part Number
1 456-7990 Timing Pin
1 456-7994 Engine Turning Tool
456-7997 Camshaft Timing Pin Camshaft Timing Procedure
Illustration 1 g06169232
Find the top center position for the number one piston. Refer to Testing and Adjusting, "Finding Top Center Position for No. 1 Piston".
Illustration 2 g06178242
Illustration 3 g06178273
Fit the camshaft (4), positioning it with the reference marks (⇒) as shown in the Illustration ( (7), front view of engine).
Lubricate the seal ring and fit it onto the shoulder plate (9).
Fit the shoulder plate (9) with the sheet metal gasket (8).
Illustration 4 g06178319
Tighten the screws (1 to 10).
Table 4
Number Description Tightening Torques
5 M8X1.25 Screws
Step 1 20 2 N m (14.8 1.48 lb ft)
Step 2 20 2 N m (14.8 1.48 lb ft) Note: Tighten the screws in the order indicated in table:
Table 5
Tightening Sequence
Step 1 1-2-3-4-5
Step 2 6-7-8-9-10 Fitting Second Idler Gear
Illustration 5 g06178327
Apply 487-3144 Gauge (1).
Check and adjust the position of the connecting rod (3) for the transmission gear. Tighten the screw (2) to the specified torque.
Illustration 6 g06178334
Refit the transmission gear (4) and lock the screws (5) to the required torque.
Table 6
Number Description Tightening Torques
3 M8X1.25 Screws
Step 1 30 mm (1.2 inch)
Step 2 30 mm (1.2 inch) Note: Lubricate the screws (2) with engine oil before assembly.Fitting gear on Camshaft
Illustration 7 g06178340
Position the gear (2) on the camshaft so that the 4 slots are centered with the holes for fixing the camshaft, without fully locking the screws (5).Note: Lubricate the screws (5) with engine oil before assembly.
With a magnetic dial gauge (1) check clearance between the gears (2) and (3), which must be between 0.074 - 0.195 mm, otherwise adjust the clearance as indicated below.
Loosen the screws (4) securing the transmission gear (3).
Loosen the screw (2) securing the connecting rod, move the connecting rod (3) to obtain the required clearance.
Lock the screw (2) securing the connecting rod and the screws (4) securing the transmission gear to the prescribed torque.