VALVE GP-SOLENOID 4579878 - Caterpillar

Engine:
C7 (S/N: JRA1-UP; JTF1-UP; TEF1-UP)
C9 (S/N: C9Y1-UP; P7Z1-UP)
Generator Set:
C9 GEN SET (S/N: C9E1-UP; NBP1-UP; NGP1-UP; NB31-UP)
C9 MARINE GEN (S/N: SJB1-UP)
Industrial Engine:
C9 INDUSTRIAL (S/N: JSC1-UP; REH1-UP)
Marine Engine:
C9 MARINE (S/N: X9Y1-UP)
Petroleum Engine:
C9 PETROLEUM (S/N: KLX1-UP)
Petroleum Power Train Package:
CX31-P600-C9I (S/N: PDZ1-UP)
Engine News SEBD9878, 26 June 2013, "A New HEUI Hydraulic Pump Is Now Used on Certain C7 ACERT Engines ". Disregard this article. Refer to the article that follows.Description of Change: The new engine HEUI pumps are used to help prevent against leaking between the pump mounting flange and housing due to vibration and insufficient compression on gasket. Design will be changed from gasket to O-ring seals at the housing and mounting flange interface.Adaptable To: The new HEUI pumps are a direct replacement for the existing pumps. This change is adaptable to serial numbers listed above. Refer to Table 2 for a list of part numbers.
Table 1
Qty     Part Number     Description     Effectivity    
1     20R-1635     PUMP GP -B     -    
1     20R-1636     PUMP GP -B     -    
1     20R-1644     PUMP GP -B     -    
1     20R-1648     PUMP GP -B     -    
1     20R-1649     PUMP GP -B     -    
1     476-8765     PUMP GP -B     S/N:TXD10601    
1     476-8766     PUMP GP -B     S/N:TXD10604    
1     476-8767     PUMP GP -B     S/N:LFE03653    
1     476-8768     PUMP GP -B     S/N:TX701943, S/N:TXD10723    
1     476-8769     PUMP GP -B     S/N:TXD10658, S/N:CKP01316, S/N:REH06599, S/N:S9P00991    This change is effective for the serial numbers listed in Table 2
Table 2
Effective Serial Numbers    
C7    
S/N:JTF23673-UP    
S/N:TEF00362-UP    
C9    
S/N:C9E03064-UP    
S/N:C9Y05076-UP    
S/N:JSC26388-UP    
S/N:KLX00211-UP    
S/N:NB300121-UP    
S/N:NBP00913-UP    
S/N:NGP00361-UP    
S/N:P7Z00182-UP    
S/N:PDZ00156-UP    
S/N:REH06599-UP    
S/N:SJB01811-UP    
S/N:X9Y05044-UP