BASE-VALVE MECHANISM COVER 4W2580 - Caterpillar

Engines:
3606 (S/N: 8RB1-UP)
3608 (S/N: 6MC1-UP)
3612 (S/N: 9RC1-UP)
3616 (S/N: 1PD1-UP)
Description of Change: A new sensor housing and new tube assemblies are used in the prelubrication lines groups (continuous prelube) on these engines. The new sensor housing helps eliminate entrapped air in the prelubrication lines groups. The new sensor housing and tube assemblies provide improved performance for the prelube sensing system.Adaptable To: The new 175-4463 Housing is used in the improved prelubrication lines groups (continuous prelube). Table 1 lists the production effectivity for the improved prelubrication lines groups.
Table 1
Effectivity of the Improved Prelubrication Lines Groups    
Engine Model     Prelubrication Lines Group (1)     Effective Serial Numbers    
3606     7E-5042 (2)
7E-5043 (3)     S/N:8RB782-UP
   
3608     7E-5042 (2)
7E-5043 (3)     S/N:6MC619-UP
   
3612     7E-6212 (2)
7E-6213 (3)     S/N:9RC320-UP
   
3616     7E-6212 (2)
7E-6213 (3)     S/N:1PD364-UP
   
( 1 ) The part numbers of the Prelubrication Lines Groups have not changed. The Prelubrication Lines Groups are not available for parts service.
( 2 ) This group is used for "right-hand service" applications.
( 3 ) This group is used for "left-hand service" applications.Earlier 3600 Engines can be updated by performing the following procedures.Procedure to Update the Prelubrication Lines Groups on In-line Engines
Illustration 1 g00679260
This illustration shows the parts that must be removed from the 7E-5042 Prelubrication Lines Group or the 7E-5043 Prelubrication Lines Group .
Remove the 121-0597 Liquid Detector Group (6) .
Remove the parts that are listed in Table 2.
Table 2
Parts That Must Be Removed From The 7E-5042 Prelubrication Lines Group And The 7E-5043 Prelubrication Lines Group    
Item     Qty.     Part Number     Description    
1     1     8M-0505     Connector    
2     1     8L-2786     O-Ring Seal    
3     1     6V-2481     Adapter Union    
4     1     5L-5502     Fitting    
5     1     004-6557     Reducer Bushing    
7     1     001-9440