TIP GP-WIDE 5054110 - Caterpillar

Illustration 1 g00786320
Location of the check valves (A) New location (B) Former locationAdaptable To: The 178-7480 Check Valve (A) replaced the former 129-1555 Check Valve (B). The change is effective with the machines in Table 2. The change is adaptable to earlier models only if the former check valve is removed from the backhoe valve. The new check valve is installed into the filter base.Note: A 148-8335 Connector replaces the former check valve that was removed from the backhoe valve. The connector is not serviceable. See Table 1 for serviceable parts of the 148-8335 Connector.
Table 1
Serviceable Parts of the 148-8335 Connector    
Quantity     Part Number     Description    
1     5K-9090     O-Ring Seal    
1     6V-8635     Connector    
1     7M-8485     O-Ring Seal    Note: If the machine has auxiliary hydraulic lines, a special valve is required. The special valve is similar to a Tee. The new valve is a 178-7481 Control Valve.
Table 2
Model     Serial Number    
416C     (S/N: 4ZN22371-UP)    
(S/N: 5YN16641-UP)
(S/N: 1WR10457-UP)
426C     (S/N: 6XN4809-UP)    
(S/N: 1CR1085-UP)
(S/N: 1MR1176-UP)
(S/N: 1YR2127-UP)
(S/N: 1ZR1003-UP)
436C     (S/N: 1PR1819-UP)    
(S/N: 2AR1871-UP)
(S/N: 8TN1270-UP)
(S/N: 1FR1419-UP)