Improved Travel Motor Plugs and New Torque Specifications are Now Used on Forest Machines and Track Feller Bunchers {0663, 5058} Caterpillar


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Improved Travel Motor Plugs and New Torque Specifications are Now Used on Forest Machines and Track Feller Bunchers {0663, 5058} [M0066996]
HYDRAULIC SYSTEM
MOTOR GP
Improved Travel Motor Plugs and New Torque Specifications are Now Used on Forest Machines and Track Feller Bunchers {0663, 5058}
Forest Machine
324D FM (S/N: JKR1-UP; JLS1-UP)
325D (S/N: C7K1-UP; C8L1-UP; C9M1-UP)
568 (S/N: BRB1-UP; YJX1-UP)
Track Feller Buncher
521B (S/N: F7B1-UP)
522B (S/N: F7C1-UP)
541 Series 2 (S/N: F7D1-UP)
552 Series 2 (S/N: F7G1-UP)

Description Of Change: Improved travel motor plugs and new torque specifications are now used on the machines listed above. The improved travel motor plugs and new torque specifications will help prevent hydraulic oil leaks and maintain travel performance.

Adaptable To: The improved travel motor plugs and new torque specifications are effective with and adaptable to the serial numbers listed in Table 1. A list of parts required for the improved travel motor plugs and O-ring seals can be found in Table 2. The new travel motor torque specifications are shown in Table 3.

Note: Replace and lubricate all O-ring seals for the travel motor plugs, refer to Illustration 1and Table 2.

Table 1
Effectivity and Adaptability of the Improved Travel Motor Plugs and New Torque Specifications 
Sales Model  Effective with  Adaptable to 
324D FM  S/N:JKR1597-UP  S/N:JKR1-1596 
324D FM HEEL  S/N:JLS1615-UP  S/N:JLS1-1614 
325D FM  S/N:C7K1494-UP  S/N:C7K1-1493 
325D FM BUTT N  S/N:C9M1687-UP  S/N:C9M1-1686 
325D FM HEEL  S/N:C8L1687-UP  S/N:C8L1-1686 
521B  S/N:F7B345-UP  S/N:F7B1-344 
522B  S/N:F7C309-UP  S/N:F7C1-308 
541B  S/N:F7D252-UP  S/N:F7D1-241 
552B  S/N:F7G215-UP  S/N:F7G1-214 
568  S/N:YJX138-UP  S/N:YJX1-137 
568 LL  S/N:BRB382-UP  S/N:BRB1-381 


Illustration 1g06011643
Travel motor head
(1) 3E-6767 O-Ring Seal
(2) 6V-3550 O-Ring Seal
(3) 139-7757 Plug (Not all locations of this part are shown in Illustration 1)
(4) Plug (Counterbalance valve group)
(5) Plug (Check and relief valve group)

Table 2
Required Parts List 
Item  Qty
(per Travel Motor Head) 
New Part Number  Former Part Number 
3E-6767 O-Ring Seal  3E-6767 O-Ring Seal 
6V-3550 O-Ring Seal  6V-3550 O-Ring Seal 
139-7757 Plug  9T-3928 Plug 

Table 3
Torque Specifications for the Plugs 
Item  Qty  Part  Specification Description 
Plug  Torque to 15 N·m (133 lb in) 
Plug (Counterbalance Valve Group)  Torque to 360 N·m (265 lb ft) 
Plug (Check and Relief Valve Group)  Torque to 260 N·m (192 lb ft) 

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