2012/10/30 Caterpillar


An Improved One Piece Torque Converter Housing is Used on Certain CX31 and CX35 Transmissions {3105}

Usage:

CX31 B3X
On-Highway Transmission:
CX31 (S/N: D9F1-UP; D9R1-UP; E2R1-UP; EBW237-UP; B3X639-UP)
CX35 (S/N: W3X359-UP)
Petroleum Transmission:
CX31-P600 (S/N: PFW1-UP)
CX35-P800 (S/N: TRJ307-UP)
Service Magazine, SEPD1539, 10 December 2012, "An Improved One Piece Torque Converter Housing is Now Used on Certain CX31 and CX35 Transmissions". Disregard this article. The correct information follows.

Description of Change: A new one piece housing design for 288-2676 Torque Converter Groups will replace the two piece housing design. The new one piece housing will replace the current two-piece housing and eliminate an unnecessary bolted joint.

Adaptable To: The new one piece housing is effective with the following transmissions.

CX31:

  • B3X00693-UP

  • D9F00962-UP

  • D9R00323-UP

  • E2R00316-UP

  • EBW01164-UP

  • HTC00409-UP

  • K1S00300-UP

  • PFW00516-UP

  • PTT00305-UP

  • PTW00375-UP

CX35:

  • TRJ00490-UP

  • W3X00364-UP

The new one piece housing is adaptable to the following transmissions.

CX31:

  • B3X00639-00692

  • D9F00001-00961

  • D9R00001-00322

  • E2R00001-00315

  • EBW00237-01163

  • HTC00001-00408

  • K1S00001-00299

  • PFW00001-00515

  • PTT00001-00304

  • PTW00001-00374

CX35:

  • TRJ00307-00489

  • W3X00359-00363

Parts

Table 1 shows a list of required parts for updating from a two piece housing torque converter to a one piece housing design.

Table 1
Item     Effectivity     Part Number     Description    
1     PFW, D9F, D9R, K1S     364-5467     Clutch Housing As    
WX3, TRJ 364-5469     Clutch Housing As    
EBW, B3X, PTT, PFW, PTW 384-1843     Clutch Housing As    
PFW, PTW, E2R, HTC, D9F, D9R, B3X 384-1847     Clutch Housing As    
2     All     390-9741     Hub    
3     All     390-9762     Retainer    
4     All     7S-7018     Seal Metal Ring    

Table 2
TC Prefix     TC Gp P/N     Former HSG (Two Piece)     New HSG (One Piece)    
T6G     288-2659     288-2671     364-5466    
T8S     376-7525    
T4G     288-2660    
T5P     366-9006    
T7G     288-2661     288-2669     355-6696    
T8G     288-2662    
T9G     288-2663     288-2673     384-1845    
T5G     288-2676    
T1T     419-0952    
T8D     277-5423     277-5421     364-5468    
T8J     335-1064    

Former Two Piece Housing




Illustration 1g03200897

Former two-piece housing design




Illustration 2g03200531

Former two-piece housing design

(A) Clutch Housing Assembly (288-2670, 288-2672, 288-2674, or 277-5422)

(B) Washer (8E-9571 or 9M-1974)

(C) Bolt (6V-3940 or 6V-5217)

(D) 129-1610 O-Ring Seal

(E) 125-9794 O-Ring Seal

(F) 260-9536 Hub

(G) 260-9534 Pilot

(H) 2K-5957 Sealing Ring

(J) 272-7960 Retainer

New One Piece Housing




Illustration 3g03330435

One piece housing design




Illustration 4g03200741

One piece housing design

(1) Clutch Housing Assembly (364-5467, 384-1843, 384-1847, or 364-5469)

(2) 390-9741 Hub

(3) 390-9762 Retainer

(4) 7S-7018 Seal Metal Ring

Assembly Instructions

Refer to Disassembly and Assembly, UENR0125, "Torque Converter - Disassemble" for instructions on disassembling the two piece housing torque converter.




Illustration 5g03201460

(K) Bolt

(5) 1T-0577 Bushing

(6) 1T-0686 Thrust Bearing Race

(7) Long guide pins (two, M10 x 120mm)

Note: Inspect the O-ring seals, the seals, and the gaskets. Replace the O-ring seals, the seals, and the gaskets that are worn or damaged.

Note: Lubricate O-ring seals lightly with the lubricant that is being sealed.

Use the following steps to adapt a two piece housing:

  1. Use 1U-6396 O-Ring Assembly Compound to stick 1T-0686 Thrust Bearing Race (6) onto clutch housing (1) .

    Note: To prevent damage, be sure that 1T-0686 Thrust Bearing Race (6) is installed into machined area of clutch housing (1) .

  1. Insert and thread special, long guide pins (two, M10 x 120mm) into impeller.

    Note: Guide pins are used for installation only and are used to avoid damaging 1T-0577 Bushing (5) .

  1. Set the housing vertically onto 390-9741 Hub (2), then remove guide pins (7) .

  1. Tighten the 24 bolts, (K) to 60 ± 7 N·m (44 ± 5 lb ft).

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