SUPPORT 6H8141 - Caterpillar

The 318-3115 Check Valve Gp and 321-6908 Check Valve Gp have an engineering change number of 02. The 304-9654 Plug As, 318-3036 Check and Relief Valve Gp, 318-3040 Check and Relief Valve Gp and 318-3052 Check and Relief Valve Gp have an engineering change number of 05.Note: An engineering change number (Eng. Chg.) indicates effectivity of this improvement or adaptability to previous check valves. The Eng. Chg. can be found stamped on the valve cartridge.
Table 2
Required Parts    
Item     Qty     Part Number     Description    
1     1     318-3115     Check Valve Gp    
1 321-6908     Check Valve Gp    
2     1     304-9654     Plug As    
3     1     471-6294     O-Ring Seal    
4     1     471-4231     Seal Kit    
Illustration 1 g03861588
Illustration 2 g03867773
(1) Check valve group (A) Part number (B) Engineering change number
Illustration 3 g03862010
(2) Plug assembly
Replace check valve group (1) and plug assembly (2) when a leak occurs at the port area.
Illustration 4 g03867777
Illustration 5 g03861596
(3) O-ring (A) Part number (B) Engineering change number (C) 318-3036 Check and Relief Valve Gp, 318-3040 Check and Relief Valve Gp and 318-3052 Check and Relief Valve Gp
If 318-3036 Check and Relief Valve Gp, 318-3040 Check and Relief Valve Gp and 318-3052 Check and Relief Valve Gp (C) have a leak at the port area, replace the existing 6V-5326 O-Ring Seal (2.62 mm (0.103 inch) cross section diameter) with a new O-ring (3) (2.95 mm (0.116 inch) cross section diameter) or replace the 325-2588 Seal Kit with seal kit (4) .