- Generator Set:
- C18 MARINE GS (S/N: GBM1-UP; CYN1-UP; GEN1-UP; MGS1-UP)
- Marine Engine:
- 3406E MARINE (S/N: 9WR1-UP)
- Petroleum Engine:
- C-15 PETROLEUM (S/N: Z2C1-UP)
- C15 MARINE (S/N: RLA1-UP)
- C18 MARINE (S/N: WKB1-UP; PLE1-UP; CKH1-UP; C1J1-UP; GES1-UP; KJT1-UP; NAX1-UP; NAY1-UP)
- C18 MARINE ENG (S/N: J2K1-UP; T2P1-UP)
- C18 PETROLEUM (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 replaces the existing 193-2444 Tube As on the following groups used on Commercial Engines without keel coolers: 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.
 | |
| 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 | |
Note: When utilizing the new 350-3558 Elbow, use the 287-7296 Brass Plug with a 3K-0360 O-Ring Seal. Also, the 361-0785 O-Ring Plug, 6L-2280 Zinc Rod, and 3K-0360 O-Ring Seal must be used with the new 350-3558 Elbow .
To install the new 348-6657 Hose on Commercial Engines 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 change replaces 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 replaces the existing 239-9966 Tube As on the following groups used on Pleasure Craft without 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.
 | |
| 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 | |
Note: When utilizing the new 350-3558 Elbow, use the 287-7296 Brass Plug with a 3K-0360 O-Ring Seal. Also, the 361-0785 O-Ring Plug, 6L-2280 Zinc Rod, and 3K-0360 O-Ring Seal must be used with the new 350-3558 Elbow .
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 |