2000/06/26 Caterpillar


Proper Gear Installation Improves Service Life {5058}

Usage:

IT14G 1WN
Integrated Toolcarrier:
IT14G (PIN: 1WN1-UP; 8ZM1-UP)
Wheel Loader:
914G (PIN: 7ZM1-UP; 9WM1-UP)
Service Manual Module, SENR6768, "914G Power Train Disassembly and Assembly", "Piston Motor (Hydrostatic)-Assemble"

Note: Insert this article in Service Manual Module, SENR6768, "914G Power Train Disassembly and Assembly", "Piston Motor (Hydrostatic)-Assemble".

When you replace the drive gear on a hystat motor, the drive gear can be incorrectly installed. An incorrectly installed gear will have a reduced service life due to a reduced contact area between the meshing gears.

When you install the hystat motor, check that the gear is installed on the motor with the long nose of the gear on the side away from the motor. See illustration1.

Table 1
Affected Parts    
Machine     Mounting Group     Hystat Motor     Gear    
Model     Part Number     Part Number     Part Number    
914G     111-4668     134-7307     110-3013    
914G     111-4670     111-0364     110-3013    
914G     111-4672     117-2912     110-3011    
IT14G     111-4669     134-7307     110-3012    
IT14G     111-4671     111-0364     110-3012    
IT14G     111-4673     111-0365     110-3010    



Illustration 1g00720304

(1) Hystat Motor

(2) Gear

(A) Longer Nose

Note: Position the longer nose (A) of the gear on the side away from the motor.

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