2013/12/20 Caterpillar

Electric Power Generation:

3412 (S/N: 4BZ1-UP)

Engine:

3306B (S/N: EFA1-UP; B8D1-UP; 1RD1-UP; 8NS1-UP)

3408 (S/N: 67U1-UP; 78Z1-UP)

3408B (S/N: 67U1-UP; 78Z1-UP)

3408C (S/N: 67U1-UP; 78Z1-UP)

3412C (S/N: DJN1-UP; 9EP1-UP; 9BR1-UP; TFT1-UP; BCW1-UP; LRY1-UP; RTY1-UP)

3412E (S/N: TGC1-UP)

3516 (S/N: CMD1-UP; ZAL1-UP; YAS1-UP)

3516B (S/N: GZS1-UP)

C18 (S/N: TNA1-UP; GTB1-UP; T2R1-UP; GEX1-UP)

C9 (S/N: X3R1-UP; C9Y1-UP)

Generator Set:

3406C (S/N: ZKC1-UP; C2G1-UP; C5G1-UP; C8G1-UP; 2RJ1-UP; 9ES1-UP; C2Y1-UP)

C15 (S/N: C5L1-UP)

C18 (S/N: STM1-UP; GBM1-UP; CYN1-UP; GEN1-UP; MGS1-UP)

C27 (S/N: DWB1-UP)

C32 (S/N: RNE1-UP; RNX1-UP)

C9 (S/N: C9E1-UP; SJB1-UP; C9A1-UP)

Industrial Engine:

3406 (S/N: 6TB1-UP)

3406C (S/N: 3ER1-UP; 4GW1-UP)

3408C (S/N: 9ER1-UP)

Marine Engine:

C18 (S/N: WKB1-UP; PLE1-UP; CKH1-UP; C1J1-UP; JHL1-UP; DTP1-UP; GES1-UP; KJT1-UP; J2K1-UP; T2P1-UP)

C32 (S/N: RND1-UP; RNY1-UP; RNF1-UP)

Power Module:

PM3456 (S/N: B3G1-UP)

Description of Change: The alternate pressure gauge is filled with silicon to dampen the vibration of the needle inside the pressure gauge.

Since the alternate 190-6637 Pressure Gauge has a 1/4 inch thread size and the previous gauge has a 1/8 inch thread size, the mating fitting will also require change as shown in the Table 1.

An alternate course of action is to replace the gauge and fittings with a 5M-6214 Pipe Plug (9/16 inch thread) or a 9S-4182 O-Ring Plug (7/16 inch thread).

Adaptable To: The alternate 190-6637 Pressure Gauge is adaptable to the above engines back to first production.

The alternate 190-6637 Pressure Gauge replaces the former 266-0889 Pressure Gauge and the 295-0758 Pressure Gauge.