HEAD GP- 4547348 - Caterpillar

PARTS DISPOSITION
Handle the parts in accordance with your Warranty Bulletin on warranty parts handling.
Rework Procedure
The 9G-6037 and 9G-6038 Track roller frame assembly that is used on some D6G Series II
Track-Type Tractors may crack near the support for the recoil spring in forestry application in CIS region.
The cracking of the Track roller frame can be eliminated by welding reinforced plates
to the top of the outer box assembly and the outside of outer box assembly. Use the information below to rework 9G-6037 and 9G-6038 Track roller frame assembly.
Inspect the Track roller frame Assembly for Cracks. Any cracks that are found need to be gouged out and the cracks welded. For information on welding, refer to Special Instruction, REHS1841, "General Welding Procedures".
Repairing any cracks in the track roller frames will not eliminate the cause of the cracks. After any repair work has been performed, the track roller frames need to be reworked in order to strengthen the track roller frames so that further cracks can be avoided.
Fabrication of Parts for Reworking the Track Roller Frame Assembly
Note: All fabricated parts need to be made from structural steel with a minimum yield strength of 290 MPa (42060 psi).
Fabricate two plates(1) to the following dimensions, shown in the Illustration 1.1.1
Image1.1.1
25 mm (0.98 inch) Thick plate (outside)
(A) 190 mm (7.48 inch), reference is AA
(B) 179 mm (7.05 inch), reference is AA
(C) 38 mm (1.49 inch), reference is AA
(D) 118 mm (4.65 inch), reference is BB
(E) 320 mm (12.60 inch), reference is BB
(F) 514 mm (20.24 inch), reference is BB
(G) 38 mm (1.49 inch), reference is AA
(H) 495 mm (19.47 inch), reference is BB
(J) 622 mm (24.49 inch), reference is BB
(K) 10 mm (0.39 inch)in two locations
(L) 27 mm (1.06 inch) Radius
(M1) 45? Angle
Fabricate one plates(2) to the following dimensions, shown in the Illustration 1.2.1.
Image1.2.1
10 mm (0.394 inch) Thick plate (Top-right)
(M1) 45? Angle
(M2) 5 +/- 1 mm (0.20 +/- 0.04 inch) in two locations
(N) 25 mm (0.98 inch), reference is CC
(P) 79 mm (3.11 inch), reference is EE
(R) 152 mm (5.98 inch), reference is DD
(S) 69 mm (2.72 inch), reference is DD
(T) 19 mm (0.75 inch) Radius
(U) 33 mm (1.30 inch), reference is DD
(V) 180 mm (7.09 inch), reference is CC
(W) 75? Angle
(X) 415 mm (16.34 inch) Radius
(Y) 29 mm (1.14 inch), reference is DD
(RR) 181 mm (7.13 inch), reference is DD
((WW)) 131.5? Angle
Fabricate one plates(3) to the following dimensions, shown in the Illustration 1.3.1.
Image1.3.1
10 mm (0.394 inch) Thick plate (Top-Left)
(M1) 45? Angle
(M2) 5 +/- 1 mm (0.20 +/- 0.04 inch) in two locations
(N) 25 mm (0.98 inch), reference is CC
(P) 79 mm (3.11 inch), reference is EE
(R) 152 mm (5.98 inch), reference is DD
(S) 69 mm (2.72 inch), reference is DD
(T) 19 mm (0.75 inch) Radius
(U) 33 mm (1.30 inch), reference is DD
(V) 180 mm (7.09 inch), reference is CC
(W) 75? Angle
(X) 415 mm (16.34 inch) Radius
(Y) 29 mm (1.14 inch), reference is DD
(RR) 181 mm (7.13 inch), reference is DD
((WW)) 131.5? Angle
Fabricate one gusset to the following dimensions, shown in the Illustration 1.4.1.
Note: Gusset