2014/11/06 Caterpillar

Articulated Truck:

730C (S/N: LFF1-UP; TFF1-UP)

730C EJECTOR (S/N: LFH1-UP; TFH1-UP)

On-Highway Transmission:

CX31 (S/N: D9F1-UP; D9R1-UP; E2R1-UP; PTT1-UP; EBW1-UP; PTW1-UP; B3X1-UP; PTX1-UP)

CX31 HT (S/N: HTC1-UP)

CX35 (S/N: W3X1-UP)

On Highway Truck:

CT660 (S/N: TGA1-UP; TGD1-UP; TEJ1-UP; TRK1-UP; TKL1-UP; TEM1-UP; TEP1-UP; TGS1-UP; TJS1-UP; TGT1-UP; TSW1-UP; TSY1-UP; TGZ1-UP)

Petroleum Transmission:

CX31-P600 (S/N: PFW1-UP; GFY1-UP)

CX35-P800 (S/N: TRJ1-UP)

Service Magazine SEPD1881, 6 November 2014, "An Improved Fastening Process for the Number Two Clutch Seal Housing is Used on Certain CX31 and CX35 Transmissions". Disregard this article. Use the following article.

Description of Change: A new screw that has Loctite already applied is used in order to secure the number two clutch seal housing.

Adaptable To:

Illustration 1	g03647625

Replace the current 9X-2045 Screw and Loctite 242 with 270-9442 Screw (1) in order to secure the 349-9156 Seal Housing .

The new screw is effective with the following transmissions:

• 730C (S/N: LFF239; TFF133)

• 730C EJECTOR (S/N: LFH1; TFH133)

• CT660 (S/N: TGA1569; TGD158; TEJ119; TRK1566; TKL600; TEM2; TEP1567; TGS145; TJS2; TGT108; TSW2; TSY144; TGZ2)

• CX31 (S/N: D9F1833; D9R349; E2R316; PTT334; EBW1325; PTW472; B3X693)

• CX31 HT (S/N: HTC390)

• CX35 (S/N: W3X380)

• CX31-P600 (S/N: PFW597; GFY300)

• CX35-P800 (S/N: TRJ594)

The new screw is adaptable to the following transmissions:

• 730C (S/N: LFF1-238; TFF1-132)

• 730C EJECTOR (S/N: TFH1-132)

• CT660 (S/N: TGA1-1568; TGD1-157; TEJ1-118; TRK1-1565; TKL1-599; TEM1-1; TEP1-1566; TGS1-144; TJS1-1; TGT1-107; TSW1-1; TSY1-143; TGZ1-1)

• CX31 (S/N: D9F1-1832; D9R1-348; E2R1-315; PTT1-333; EBW1-1324; PTW1-471; B3X1-692)

• CX31 HT (S/N: HTC1-389)

• CX35 (S/N: W3X1-379)

• CX31-P600 (S/N: PFW1-596; GFY1-299)

• CX35-P800 (S/N: TRJ1-593)

The additional parts that are listed in Table 1 are only required after a transmission failure.

Table 1

Required Parts
Item	Qty	Part Number	Description	Former Part Number
1	6	270-9442	Screw	9X-2045
2	3	222-5203	Friction Disc
3	6	244-7772 (1)	Modulating Valve Gp
4	3	264-4804	Plate
5	1	268-0226	Seal
6	1	389-1085	Oil Filter Element As

( 1 )

6D-7889 O-Ring Seal sold separately

Rework Procedure

For the following rework procedure steps, refer to Disassembly and Assembly, UENR0125.

Start by:

1. Remove the gear pump. Refer to Disassembly and Assembly, "Gear Pump (Torque Converter and Transmission) - Remove"

2. Remove the torque converter housing. Refer to Disassembly and Assembly, "Torque Converter Housing - Remove".

3. Disassemble the planetary. Refer to Disassembly and Assembly, "Transmission Planetary - Disassemble".

   1. Perform Step 12 - Step 21.

   2. Clean and inspect all parts. Replace the additional parts that are listed in Table 1 if a transmission failure occurred as a result of the loose screw.

   3. Remove 263-2847 Manifold (Step 27) and clean threaded holes thoroughly prior to installing new screws.

Reassembly:

1. Reassemble the planetary. Refer to Disassembly and Assembly, "Transmission Planetary - Assemble".

   1. Reinstall 263-2847 Manifold (Step 44).

   2. Step 50 - Insure holes are aligned. Install 270-9442 Screws and tighten uniformly around or in a star pattern, turning each screw no more than one complete turn at one time. Torque 270-9442 Screws to 12 ± 3 N·m (106 ± 27 lb in).

   3. Continue with Step 51 - Step 59.

2. Reassemble the torque converter housing. Refer to Disassembly and Assembly, "Torque Converter Housing - Install".

   Note: May be necessary to rotate the converter during assembly to ensure that all splines for clutch #1 and clutch #2 are aligned.

3. Reinstall the gear pump. Refer to Disassembly and Assembly, "Gear Pump (Torque Converter and Transmission) - Install"