SENSOR GP- 1638526 - Caterpillar

Table 5
Rocker arm inside diameter for shaft New C2.6 - 14.000 to 14.018 mm (0.55118 to 0.55189 inch)
C3.3B - 15.000 to 15.018 mm (0.59056 to 0.59125 inch)
If the clearance exceeds the allowable limit, replace the rocker arm and measure the oil clearance again. If the clearance still exceeds the allowable limit, replace also the rocker arm shaft. Oil Clearance between Valve Bridge Arm and Valve Bridge Shaft
Illustration 3 g02997869
(1) Valve Bridge Arm
Measure the valve bridge arm (1) inside diameter with an inside micrometer.
Illustration 4 g02997872
(2) Valve Bridge Shaft
Measure the valve bridge shaft (2) outside diameter with an outside micrometer, and then calculate the oil clearance.
Table 6
Oil clearance between valve bridge arm and valve bridge shaft New C2.6 - 0.018 to 0.057 mm (0.00071 to 0.00224 inch)
C3.3B - 0.018 to 0.042 mm (0.00071 to 0.0016 inch)
Allowable limit 0.15 mm (0.0059 inch)
Table 7
Valve bridge shaft outside diameter New C2.6 - 8.023 to 8.032 mm (0.31587 to 0.31622 inch)
C3.3B - 9.023 to 9.032 mm (0.3553 to 0.3555 inch)
Table 8
Valve bridge arm inside diameter New C2.6 - 8.050 to 8.080 mm (0.31693 to 0.31811 inch)
C3.3B - 9.050 to 9.065 mm (0.3563 to 0.3568 inch) Push Rod Alignment
Illustration 5 g02997916
(1) Pushrod
Place the push rod on V blocks.
Measure the push rod alignment.
Table 9
Push rod alignment Allowable limit 0.25 mm (0.0098 inch) Oil Clearance between Tappet and Tappet Bore
Illustration 6 g02997956
(1) Tappet
Measure the tappet outside diameter with an outside micrometer.
Illustration 7 g02997957
(2) Tappet Bore
Measure the inside diameter of the tappet bore at the most wear part with a small hole gauge.
Table 10
Oil clearance between tappet and tappet bore New 0.020 to 0.050 mm (0.00079 to 0.0019 inch)
Allowable limit 0.07 mm (0.003 inch)
Table 11
Tappet outside diameter New 9.965 to 9.980 mm (0.3924 to 0.3929 inch)
Table 12
Tappet bore inside diameter New 10.000 to 10.015 mm (0.39370 to 0.39429 inch)