1999/11/01 Caterpillar


Kits Available To Improve Lift Cylinder Operations {5102,5057}

Usage:


IT12F (1KF) Integrated Toolcarriers

Two rework kits are available to improve lift cylinder voiding by providing increased flow of hydraulic oil through the lift cylinders. The 131-8611 Rework Kit is for machines equipped with third valve control hydraulics and the 131-8612 Rework Kit is for machines equipped with fourth valve control hydraulics.

The 131-8611 and 131-8612 Rework Kits are adaptable to IT12F (4EL83-Up) machines and are available through normal parts ordering channels.

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.

Caterpillar Information System:

1999/11/01 New Screw Used For Pendulum Arm Covers {7228}
1999/11/01 Additional Cable Straps Used On Control Switch Wiring {2359}
1999/11/01 Corrections To Operation And Maintenance Manual, SEBU7207 And SEBU7255 {1000,1463,1700}
1999/11/01 Improved Hydraulic Line For Pilot Control Increases Service Life {5057}
1999/11/01 Customer Site License And Annual Subscriptions For VIMSpc99 Software Available {7601}
1999/11/01 Special Instruction, REHS0434-02, Is Available {0374,6800}
1999/11/01 New Bearing Improves Differential Shafts Reliability {4066}
1999/11/01 Correction To Disassembly And Assembly Module, RENR3402 {7258,7258}
1999/11/01 Correction To Disassembly And Assembly, Module, SENR9145 {7258,7258}
1999/11/01 Schematic Available For 793C Off-Highway Trucks {7601,7566}
1999/11/01 Improved Air Conditioning Hose Routing Increase Hose Service Life {1808}
1999/11/01 Battery Care And Maintenance {1401}
1999/11/01 Control Valve Improves Tilt Cylinder Operation {5104,5132}
1999/11/01 New Process For Installing The Rear Transmission On The Chassis {4050}
1999/11/01 Improved Corrosion Protection For Reman Major Components {3100,3150,4059}
1999/11/01 New Hose Used On Harvester Head Stump Treatment {5057}
1999/11/01 New Hose Assembly Reduces Load On Lubrication Pump {5057}
1999/11/01 138-8440 Component Cleaner May Damage Electrical Connectors {0644}
1999/11/08 New Radiator Group Used For H Series Motor Graders {1353}
1999/11/08 New Final Drive Spindle Used {4050}
1999/11/08 New Light Emitting Diodes (LED's) Are Now Available For Retrofit In Off-Highway Truck Indicator Panels {7450}
1999/11/08 Jacket Water Heater Available For Field Installation {1383}
1999/11/08 A Special Instruction For Installing A Water Spray Kit On An Angle Broom Is Now Available {5612}
1999/11/08 A Special Instruction For Installing A Water Spray Kit On A Cold Planer Is Now Available {5612}
Back to top
The names Caterpillar, John Deere, JD, JCB, Hyundai or any other original equipment manufacturers are registered trademarks of the respective original equipment manufacturers. All names, descriptions, numbers and symbols are used for reference purposes only.
CH-Part.com is in no way associated with any of the manufacturers we have listed. All manufacturer's names and descriptions are for reference only.