Reconditioning Ripper Pin Bores{6310, 6311, 6312, 6313, 6314, 6315, 6316} Caterpillar

Reconditioning Ripper Pin Bores{6310, 6311, 6312, 6313, 6314, 6315, 6316}

Usage:

D8L, D9L, D10

Introduction

Depending on the application in which the above tractors are used, the ripper pin bores will eventually need to be reconditioned. Normally, these bores are welded and then machined to the correct diameter. If desired, bearings that are already in the parts system can be used instead of welding the bores in the ripper arrangement.

While the new bearings may not be the exact lengths or diameters needed, they are close enough that they require no machining and are made of a high quality hardened material. It may be necessary to weld the bores prior to machining to the new bearing size to get enough stock for 100 percent cleanup.

This special instruction will give a listing of the parts available for installing new bearings in the frame and ripper arrangement and the dimensions to be maintained. To install these bearings it will be necessary to machine the bores so there is a 0.075-0.150 mm (0.003" - 0.006") press fit between the bearing and the bore.

If the bearings are too long they can be ground to the length needed and they may be tack welded in place to prevent movement. Unless otherwise specified all bore center location tolerances are to be ± 2 mm (0.08"), however the holes must be in line with each other to allow the insertion of the mounting pins. We recommend that if part of the ripper mounting holes in a component are reworked, that all of the holes in that component be reworked.

Reference: Service Manual, Parts Book.

D8L

NOTE: The new bearing I.D. and the original bore I.D. are not the same size. Do not grind the bearing I.D. to match the original bore I.D.; the mounting pins will fit both.

1. Ripper Beam. 2. Tilt Cylinder. 3. Lift Cylinder. 4. Mounting Bracket. 5. Tractor Frame. 6. Ripper Frame.

Reworking the Mounting Brackets

1. Locate the bore centers according to the dimensions shown and machine two holes in line at location (A). The holes should be 0.075-0.150 mm (0.003-0.006") smaller than the bearing O.D. dimensions.

2. Press the new bearings into place.

Reworking the Tractor Frame

1. Remove the old bearings at location (B).

2. Locate the bore centers according to the dimensions shown and machine two holes in line at location (B). The holes should be 0.075-0.150 mm (0.003-0.006") smaller than the bearing O.D. dimensions.

3. Press the new bearings in place.

Reworking the Ripper Frame

Single Shank Ripper Frame. (Dimensions and bearings are the same for the Multi-Shank Ripper.)

1. Remove the old bearings and spacers at location (F).

2. Locate the bore centers according to the dimensions shown and machine four holes in line at locations (C), (D) & (E) and two holes in line at location (F). The holes should be 0.075-0.150 mm (0.003-0.006") smaller than the bearing O.D. dimensions.

3. Press the new bearings into place at locations (C), (D) and (E) according to the dimensions shown.

NOTE: The bearings should be flush with the inside face of each pair of ears.

4. At location (F) press two new bearings (1) and a 4T0207 Spacer (2) into each side of the ripper frame to the dimensions shown.

Reworking the Single or Multi-Shank Ripper Beam

Single Shank Ripper Beam. (Dimensions and bearings are the same for the Multi-Shank Ripper.)

1. Locate the bore centers according to the dimensions shown and machine four holes in line at locations (G) and (H). The holes should be 0.075-0.150 mm (0.003-0.006") smaller than the bearing O.D. dimensions.

Multi-Shank Ripper Beam. (Dimensions are the same for the Single Shank Beam.)

* Dimension (A) is 46 mm (1.8"), typical four places.* Dimension (B) is 70 mm (2.75"), typical four places.* Dimension (C) is 230 ± 3 mm (9.00 ± 0.12"), typical two places.

2. Press the new bearings into place according to the dimensions shown.

D9L

NOTE: The new bearing I.D. and the original bore I.D. are not the same size. Do not grind the bearing I.D. to match the original bore I.D.; the mounting pins will fit both.

Show/hide table

NOTICE

In addition to the bearings listed above the following parts may be required. See the instructions for Reworking the Mounting Brackets, Reworking the Single Shank Frame and Reworking the Multishank Frame.

4J1523 Boss.

Make from ASTM A36 grade steel 30 mm (1.2") thick.

7J4654 Boss.

Make from ASTM A514 grade steel 30 mm (1.2") thick.

4T8804 Plate.

Make from ASTM A514 grade steel 20 mm (.8") thick.

4T3700 Boss.

Make from ASTM A514 grade steel 20 mm (.8") thick.

1. Ripper Beam. 2. Tilt Cylinder. 3. Mounting Bracket. 4. Lift Cylinder. 5. Ripper Frame.

Rework of Mounting Brackets

1. Check the brinnel hardness of bosses at (D) and the outside bosses at (H). If the diameter of the impression is not 3.6 to 3.9 mm (0.142 to 0.154") remove and replace them with heat treated 4J1523 Bosses.

2. Check the brinnel hardness of four bosses at location (G). If the diameter of the impression is not 3.6 to 3.9 mm (0.142 to 0.154") remove and replace them with 7J4654 bosses.

NOTE: Center bosses on hole centers and weld one side of 4J1523 Bosses and one side of 7J4654 Bosses with 10 mm (0.40") fillet weld with 1.5 mm (0.06") penetration.

3. Remove the pins at locations (E & F) and disassemble the top mounting brackets.

Top Mounting Brackets.

4. Locate the bore centers according to the dimensions shown and machine two holes in line at locations (A) & (B), (C) & (D), (J) & (K), and (E). The holes should be 0.075-0.150 mm (0.003-0.006") smaller than the bearing O.D. dimensions.

5. Press the new bearings into place.

Lower mounting Brackets.

6. Locate the bore centers according to the dimensions shown and machine four holes in line at locations (F), (G) & (H). The holes should be 0.075-.150 mm (.003-006") smaller than the bearing O.D. dimensions.

7. Press the new bearings into place.

Rework of Single Shank Ripper Frame

1. Check the thickness of the four ears at location (L). If they measure 55 mm (2.2") and the holes are wallowed out, they may be bored out and new bushings installed. If the holes are not wallowed out, no rework is required.

2. If the thickness of the four ears is 35 mm (1.4") and there are no bosses added to the ears, then four 4T8804 Plates should be added.

If bosses have been added to the ears, check the brinnel hardness of the bosses. If the diameter of the impression is 3.6 to 3.9 mm (0.142 to 0.154") the existing bosses may be bored out to size [see note].

If the diameter of the impression is not 3.6 to 3.9 mm (0.142 to 0.154") the bosses should be removed and four 4T8804 Plates should be added. Locate the radius center of the plate on the bore center of location (L) in the following illustration. Make a 10 mm (0.40") fillet weld with 1.5 mm (0.06") penetration all around the outside of the 4T8804 Plates.

NOTE: We recommend that the bosses be removed and 4T8804 Plates be installed and then bored out even if the impression diameter is 3.6 to 3.9 mm (0.142 to 0.154"), as these plates will help prevent additional rework at a later date.

3. Locate the bore centers according to the dimensions shown and machine four holes in line at location (L) and two holes in line at locations (M) & (N). The holes should be 0.075-0.150 mm (0.003-0.006") smaller than the bearing O.D. dimensions.

4. Press the new bearings in the frame according to the dimensions shown.

Reworking the Multi-Shank Ripper Frame

NOTE: If the inside plates at locations (L) are wallowed out and do not have 4T3700 Bosses attached, the bosses should be added before installing bearings. If the holes are not wallowed out, it is not necessary to rework this location at this time.

1. Position the bosses at location (L) and center the bores as shown. Make a 10 mm (.40") fillet weld with 1.5 mm (.06") penetration all around the O.D. of each boss.

2. Locate the bore centers according to the dimensions shown and machine four holes in line at location (L) and two holes in line at locations (M) & (N). The holes should be 0.075-0.150 mm (0.003-0.006") smaller than the bearing O.D. dimensions.

3. Press the new bearings in the frame according to the dimensions shown.

Rework of Ripper Beam (Single Shank)

1. Locate the bore centers according to the dimensions shown and machine four holes in line at location (P) and (Q). The holes should be 0.075-0.150 mm (0.003-0.006") smaller than the bearing O.D. dimensions.

2. Press the new bearings in the ripper beam according to the dimensions shown.

Rework of Ripper Beam (Multi-Shank)

1. Locate the bore centers according to the dimensions shown and machine four holes in line at locations (R) and (S). The holes should be 0.075-0.150 mm (0.003-0.006") smaller than the bearing O.D. dimensions.

2. Press the new bearings into place according to the dimensions shown.

D10

NOTE: The new bearing I.D. and the original bore I.D. are not the same size. Do not grind the bearing I.D. to match the original bore I.D.; the mounting pins will fit both.

1. Ripper Beam. 2. Tilt Cylinder. 3. Mounting Bracket. 4. Lift Cylinder. 5. Ripper Frame.

Rework Of Mounting Bracket

1. Locate the bore centers according to the dimensions shown and machine two holes in line at locations (A), (B), (C) & (D). The holes should be 0.075-0.150 mm (0.003-0.006") smaller than the bearing O.D. dimensions.

L.H. Shown

2. Press the new bearings in the mounting brackets according to the dimensions shown.

Rework Of Single Shank Ripper Frame

1. Locate the bore centers according to the dimensions shown and machine four holes in line at location (F) and two holes in line at locations (E) & (G). The holes should be 0.075-0.150 mm (0.003-0.006") smaller than the bearing O.D. dimensions.

Typical Example

2. Press the new bearings in the frame according to the dimensions shown.

Rework Of Multi-Shank Ripper Frame

2. Press the new bearings in the frame.

Rework Of Ripper Beam (Single Shank)

Typical Example.

1. Locate the bore centers according to the dimensions shown and machine four holes in line at locations (H) and (J). The holes should be 0.075-0.150 mm (0.003-0.006") smaller than the bearing O.D. dimensions.

2. Press the new bearings in the ripper beam according to the dimensions shown.