BUS BAR GP-BOX 2527413 - Caterpillar

25 N m (20 lb ft).Note: Be sure that the timing plate does not move from the starting point degree mark when the bolt is tightened.
Remove the timing pin (4) .
Refer to Table 5 for the timing plate degree that corresponds to the lifter that is being checked. Turn the timing plate counterclockwise until the degree setting for the lifter that is being checked is aligned with the pointer.
Use the following procedure in order to calibrate the dial indicator before measuring the dimension of the lifter:
Install the 5P-4157 Gauge (Fuel Injection Timing) (101.6 mm (4.00 inch)) onto the 5P-4159 Gauge .
With the contact point in the gauge hole, put the dial indicator and the base on top of the 5P-4157 Gauge (Fuel Injection Timing).
Loosen the screw that locks the dial face. Move the dial face until the large pointer is on zero. Tighten the screw.
Record the position of the small pointer. The dial indicator is now calibrated.
Illustration 15 g01029097
Tooling setup for measuring the timing dimension (8) 8S-3158 Indicator Gauge Gp (Dial) (9) 3P-1565 Collet Clamp (10) 5P-4156 Indicator Base (11) 5P-4157 Gauge (Fuel Injection Timing) (12) Spacer (13) 5P-4163 Indicator Contact Point (A) Timing dimensionNote: When you measure the timing dimension, calculate the difference between the reading from the calibration check and the current reading on the dial face. The length of the gauge must be added to the measurement in order to obtain the corrected timing dimension.
Off-engine timing dimension 3412C and 3412D ... 110.335 0.051 mm (4.3439 0.0020 inch)
Table 5
Lifter Settings for 3412C (25° BTC) and 3412D (22.5° BTC)
(The timing plate must be rotated in the counterclockwise direction.)    
Lifter    Timing Plate Degree (1)    Timing Plate Degree (2)    
1     347.5     348.75    
2     135     136.25    
3     227.5     228.75    
4     15     16.25    
5     107.5     108.75    
6     255     256.25    
7     287.5     288.75    
8     75     76.25    
9     47.5     48.75    
10     195     196.25    
11     167.5     168.75    
12     315     316.25    
( 1 ) 102-9730 Pump Group
( 2 ) 239-9637 Pump Group and 239-9638 Pump Group
The spacer (12) for each fuel injection pump must be selected in order to change the timing dimension of that fuel injection pump. Refer to the Table 6 for the spacer thickness and the spacer part number.
Table 6
Available Spacers    
Part Number    Thickness    
9N-6496    
4.12 mm (0.162 inch)    
9N-6495    
4.22 mm (0.166 inch)    
5M-2697    
4.32 mm (0.170 inch)    
2M-4208    
4.42 mm (0.174 inch)    
2M-4209    
4.52 mm (0.178 inch)    
2M-4210    
4.62 mm (0.182 inch)    
2M-4211    
4.72 mm (0.186 inch)    
2M-4212    
4.83 mm (0.190 inch)    
5M-2691    
4.93 mm (0.194 inch)    
5S-7189    
5.03 mm (0.198 inch)    
Recheck all of the timing