PIN 4398723 - Caterpillar

The 131-8611 Rework Kit
Illustration 1.
The 131-8611 Rework Kit, for machines with third valve control hydraulics. (Use with Table 1.)
Illustration 2.
View C-C of Illustration 1, showing enlargement of bolt holes modification to the 8Y-8953 Plate Assembly.(A) 136.6 mm (5.4 in)(B) 104.8 mm (4.1 in)(C) 161.2 mm (6.3 in)
Illustration 3.
Section A-A of Illustration 1, showing enlargement of hole modification to the 8Y-7676 Block.(A) 12 2 mm (.5 .1 in)(B) 27.4 2 mm (1.1 .1 in)(C) ? 19.1 3 mm (.8 .1 in)Modifications are required on two existing machine parts before installation of the 131-8611 Rework Kit.
1. Modification to the 8Y-8953 Plate Assembly.Remove the two M10 Weldnuts. Enlarge the existing plate assembly holes (X) to provide clearance for M12 Bolts required to mount the new valve end housing. See Illustration 2 for modification details.
2. Modification to the 8Y-7676 Block.Enlarge the existing lift cylinder tube hole in the rubber for the larger size lift cylinder rod end tubes. See Illustration 3 for modification details.
The 131-8612 Rework Kit
Illustration 4.
The 131-8612 Rework Kit, for machines with fourth valve control hydraulics. (Use with Table 2.)
Illustration 5.
Section A-A of Illustration 4, showing enlargement of hole modification to the 8Y-7676 Block.(A) 12 2 mm (.5 .1 in)(B) 27.4 2 mm (1.1 .1 in)(C) ? 19.1 3 mm (.8 .1 in)The modification to enlarge the existing lift cylinder tube hole in the 8Y-7676 Block is required for the installation of the 131-8612 Rework Kit. See Illustration 5 for modification details.