- Engines:
- 3606 (S/N: 8RB)
- 3608 (S/N: 6MC)
- 3612 (S/N: 9RC)
- 3616 (S/N: 1PD)
- G3606 (S/N: 3XF)
- G3608 (S/N: 4WF)
- G3612 (S/N: 1YG)
- G3616 (S/N: 4CG)
Reference: Engine News, May 1999, Page 21, "New Jacket Water Heater Groups Help Prevent Coolant Leaks"
New components are used in the jacket water heater groups for these engines. The jacket water heater groups now include a new thermostat (sensing unit) and a new heater element assembly. The new heater element assembly uses a V-band clamp. The V-band clamp provides better sealing than the former tapered pipe thread connection. These improvements will help eliminate coolant leaks from the jacket water heater groups.
Note: The new thermostat (sensing unit) is adaptable to all earlier jacket water heater groups. The new heater element assembly is NOT adaptable to the earlier jacket water heater groups.
| New Components in the Jacket Water Heater Groups | ||||
| Jacket Water Heater Group | Thermostat (Sensing Unit) | Heater Element Assembly | ||
| New Pt. No. | Former Pt. No. | New Pt. No. | Former Pt. No. | |
| 171-6115 | 187-4191 | 4P-5137 | 187-4194 | 4P-5142 |
| 171-6116 | 187-4191 | 4P-5137 | 187-4197 | 4P-5141 |
| 171-6117 | 187-4191 | 4P-5137 | 187-4199 | 116-6165 |
| 171-6118 | 187-4191 | 4P-5137 | 187-4200 | 116-6166 |
| 171-6119 | 118-1300 | 145-2837 | 187-4200 | 116-6166 |
| 173-3011 | 187-4191 | 4P-5137 | 187-4193 | 161-6497 |
| 173-3012 | 187-4191 | 4P-5137 | 187-4194 | 161-6493 |
| 173-9735 | 118-1300 | 145-2837 | 187-4199 | 116-6165 |
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| Illustration 1 | g00708689 |
This is an illustration of a former jacket water heater group. (1) Thermostat (sensing unit) (2) Heater element assembly (A) Former pipe thread connection | |
 | |
| Illustration 2 | g00708692 |
This is an illustration of a new jacket water heater group. (1) Thermostat (sensing unit) (2) Heater element assembly (B) New V-band clamp | |