A New Coupling Assembly Is Used on Heat Exchangers for Certain 3500B and 3500C Engines {1379}
- Engine:
- 3508C (S/N: TTB1-UP)
- Petroleum Engine:
- 3512C (S/N: LLB1-UP)
- 3512C (S/N: TTC1-UP; TTE1-UP; TTF1-UP; TTG1-UP; SLM1-UP; E3W1-UP; T3W1-UP; E3Y1-UP)
- 3516B (S/N: S2R1-UP)
- 3516C (S/N: TTD1-UP; TTH1-UP; TTJ1-UP; JTS1-UP)
- 3516C (S/N: PES1-UP)
Description of Change: The new coupling assembly provides a better seal at the joint for the heat exchanger elbow and jacket water tube. The coupling assembly provides superior clamping force against high jacket water pressure.
Adaptable To: The 423-2808 Coupling As replaces the 7L-3201 Tube Joint on the engines that are listed above.
The 423-2808 Coupling As is adaptable to the above engines back to first production. Effectivity is listed in Table 1.
Show/hide table
| Sales Model | Effective Serial Numbers |
|---|---|
| 3508C | S/N:TTB00463-UP |
| 3512C | S/N:E3W00338-UP |
| S/N:E3Y00295-UP | |
| S/N:LLB00130-UP | |
| S/N:SLM00501-UP | |
| S/N:TTC00601-UP | |
| S/N:TTE00208-UP | |
| S/N:TTF00208-UP | |
| S/N:TTG00309-UP | |
| 3512C HD | S/N:T3W00202-UP |
| 3516B | S/N:S2R00773-UP |
| 3516C | S/N:JTS00403-UP |
| S/N:PES00784-UP | |
| S/N:TTD00398-UP | |
| S/N:TTH00616-UP | |
| S/N:TTJ00458-UP |
Show/hide table
| Qty | New Parts |
| 2 | 110-7753 O-Ring Seal |
| 2 | 423-2808 Coupling As |
Show/hide table
 | |
| Illustration 1 | g03343047 |
Typical heat exchanger (1) 423-2808 Coupling As | |
Note: New 110-7753 O-Ring Seals are provided along with coupling assembly (1) for the reinstallation of the tube assembly.
Tighten the coupling assembly ... 12 N·m (9 lb ft)
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