- Generator Set:
- C18 (S/N: GBM1-UP; CYN1-UP; GEN1-UP; MGS1-UP)
- Marine Engine:
- 3406E (S/N: 9WR1-UP)
- Petroleum Engine:
- C-15 (S/N: Z2C1-UP)
- C15 (S/N: RLA1-UP)
- C18 (S/N: WKB1-UP; PLE1-UP; CKH1-UP; C1J1-UP; P1N1-UP; P2N1-UP; GES1-UP; KJT1-UP; NAX1-UP; NAY1-UP)
- C18 (S/N: J2K1-UP)
- C18 (S/N: MPE1-UP)
Description of Change: Improved hose assemblies are available for the replacement of the existing tube assemblies on certain water lines groups. The hose assemblies have an improved resistance to engine vibration.
Adaptable To:
Auxiliary Water Pumps that Are Used on Commercial Engines
The new 348-6657 Hose is available to replace the existing 193-2444 Tube As on the following groups that are used on Commercial Engines that do not have a keel cooler: 252-5812 Water Lines Gp, 252-5813 Water Lines Gp, 216-8387 Water Lines Gp, 290-3994 Water Lines Gp and 201-1400 Water Lines Gp. Refer to Illustration 1.
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| Illustration 1 | g02027054 |
(1) 350-3558 Elbow (2) Two 144-0367 Hose Clamps (3) 348-6657 Hose (4) Two 8T-4984 Hose Clamps (5) 350-3565 Tube As | |
In order to install the new 348-6657 Hose on Commercial Engines that are equipped with a keel cooler, only one clamp is utilized on each end of the hose. Refer to Table 1 for the list of parts that are used. This includes the 240-9044 Water Lines Gp and the 309-0104 Auxiliary Fresh Water Lines Gp.
| New Part Number | Description | Quantity |
| 144-0367 | Hose Clamp | 1 |
| 348-6657 | Hose | 1 |
| 8T-4984 | Hose Clamp | 1 |
| 350-3565 | Tube As | 1 |
This change is adaptable back to first production on the serial numbers that are listed above with the appropriate configuration of auxiliary water pump.
Auxiliary Water Pumps that Are Used on Pleasure Craft
The new 348-7211 Hose is available to replace the existing 239-9966 Tube As on the following groups that are used on Pleasure Craft that do not have keel coolers: 131-8274 Water Lines Gp, 201-1300 Water Lines Gp, 294-0103 Water Lines Gp and 333-0485 Auxiliary Sea Water Lines Gp. Refer to Illustration 2.
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| Illustration 2 | g02027443 |
(6) 350-3558 Elbow (7) Two 144-0367 Hose Clamps (8) 348-7211 Hose (9) Two 8T-4984 Hose Clamps (10) 350-3565 Tube As | |
This change is adaptable back to first production on the serial numbers that are listed above with the appropriate configuration of auxiliary water pump.
This change is effective for the serial numbers that are listed in Table 2.
| Effective Serial Numbers |
| S/N:WKB425-UP |
| S/N:GES215-UP |
| S/N:GEN286-UP |
| S/N:T2P783-UP |
| S/N:MGS925-UP |
| S/N:GBM221-UP |