2014/05/20 An Improved Water Pump Seal Assembly Is Used on Certain Commercial Engines {1361, 7555} Caterpillar

Electric Power Generation:

C175-16 (S/N: WYB1-UP)

Engine:

3516B (S/N: MSK1-UP)

C-18 (S/N: JZB1-UP)

C15 (S/N: KRA1-UP; TRB1-UP; LDN1-UP; JEP1-UP; MG21-UP)

C175-16 (S/N: M6A1-UP; Y3A1-UP; M6B1-UP; P6L1-UP)

C18 (S/N: RRC1-UP; N8F1-UP; BDN1-UP; T2R1-UP; BE21-UP)

G3516C (S/N: GZC1-UP; F6D1-UP; F6E1-UP; F6F1-UP; GZZ1-UP)

G3516H (S/N: GLM1-UP)

G3520B (S/N: GLF1-UP)

G3520C (S/N: GZA1-UP; GZB1-UP; GZJ1-UP; GZM1-UP; GZN1-UP; RLP1-UP; LGS1-UP)

G3520E (S/N: GZE1-UP)

Generator Set:

C15 (S/N: LNA1-UP; T4A1-UP; C5E1-UP; C5H1-UP; LXJ1-UP; C5L1-UP; NKL1-UP; X5M1-UP; SNW1-UP; CYY1-UP)

C18 (S/N: LNB1-UP; LZB1-UP; N1D1-UP; PEJ1-UP; LXK1-UP; EKW1-UP; M1Z1-UP)

C27 (S/N: N1B1-UP; T4Z1-UP)

Industrial Engine:

C15 (S/N: MCW1-UP)

C18 (S/N: WRH1-UP)

C27 (S/N: WJC1-UP; RAM1-UP)

C32 (S/N: NST1-UP)

Petroleum Engine:

C15 (S/N: PET1-UP)

C27 (S/N: NAR1-UP)

C32 (S/N: SDK1-UP)

G3520B (S/N: TPC1-UP)

Petroleum Power Train Package:

C15 (S/N: PGN1-UP)

C18 (S/N: 1881-UP)

CX35-P800-C18I (S/N: PCF1-UP)

Power Module:

PMG3516 (S/N: JKK1-UP)

Engine News SEBD9928, 10 February 2014, "An Improved Water Pump Seal Assembly Is Used on Certain G3500 Engines". Disregard the previous article. Refer to the following information.

Description of Change: The improved water pump seal has increased nominal compression by reducing the inner diameter of the mating seal face.

Adaptable To: The improvement has been made to the 336-2212 Water Pump Seal As. The new seal assembly is adaptable back to first production on the serial numbers listed above.

The 336-2212 Water Pump Seal As is incorporated in the 267-2839 Water Pump Kit .

The 336-2212 Water Pump Seal As is used in the water pumps listed in Table 1.

Table 1

Water Pump Groups
10R-8658 Water Pump Gp
10R-8660 Water Pump Gp
10R-9042 Water Pump Gp
20R-0505 Water Pump Gp
20R-0952 Water Pump Gp
20R-1859 Water Pump Gp
20R-2773 Water Pump Gp
288-6494 Water Pump Gp
336-2213 Water Pump Gp
343-8955 Water Pump Gp
349-6213 Water Pump Gp
349-6214 Water Pump Gp
349-6215 Water Pump Gp
349-6216 Water Pump Gp
352-2386 Water Pump Gp
352-8589 Water Pump Gp
355-7389 Water Pump Gp
357-8359 Water Pump Gp
366-0168 Water Pump Gp
373-8912 Water Pump Gp
374-4752 Water Pump Gp

This change is effective with the serial numbers listed in Table 2.

Table 2

Effective Serial Numbers
S/N:JZB01503-UP
S/N:T2R00225-UP
S/N:N1B00207-UP
S/N:KSJ00168-UP
S/N:MSK00479-UP
S/N:C5E04232-UP
S/N:C5H03146-UP
S/N:C5L06293-UP
S/N:CYY01785-UP
S/N:JEP02441-UP
S/N:KRA17330-UP
S/N:LDN01536-UP
S/N:LNA06680-UP
S/N:LXJ00884-UP
S/N:MCW06494-UP
S/N:MG200102-UP
S/N:NKL00600-UP
S/N:PET00401-UP
S/N:PGN00154-UP
S/N:SNW00588-UP
S/N:T4A00735-UP
S/N:TRB02974-UP
S/N:X5M00320-UP
S/N:M6A01008-UP
S/N:M6B01005-UP
S/N:P6L01041-UP
S/N:WYB01476-UP
S/N:Y3A00119-UP
S/N:18800035-UP
S/N:BDN01859-UP
S/N:BE200102-UP
S/N:EKW01670-UP
S/N:LZB01503-UP
S/N:LNB00978-UP
S/N:LXK00365-UP
S/N:M1Z01922-UP
S/N:N1D00940-UP
S/N:N8F00507-UP
S/N:PCF00115-UP
S/N:PEJ00233-UP
S/N:RRC00578-UP
S/N:WRH05337-UP
S/N:NAR00161-UP
S/N:RAM00206-UP
S/N:T4Z00300-UP
S/N:WJC00217-UP
S/N:NST00129-UP
S/N:SDK00243-UP
S/N:GLM00168-UP
S/N:F6D00115-UP
S/N:F6E00102-UP
S/N:F6F00110-UP
S/N:GZC00265-UP
S/N:GZZ00363-UP
S/N:GLF01106-UP
S/N:TPC01126-UP
S/N:GZA00266-UP
S/N:GZB00253-UP
S/N:GZJ00677-UP
S/N:GZM91004-UP
S/N:GZN00890-UP
S/N:LGS00182-UP
S/N:RLP00262-UP
S/N:GZE00266-UP
S/N:JKK00236-UP