349F and 352F Excavators Machine System Specifications Caterpillar


Front Idler

Usage:

352F-VG A9J


Illustration 1g03427901

Table 1
Specification for 248-7151 Front Idler Gp 
Item  Qty  Part  Specification Description 
7H-3171 Pipe Plug  Remove the pipe plug from the front idler assembly and apply air pressure to this port. Front idler assembly should sustain 245 kPa (36 psi) to 265 kPa (38 psi) air pressure for a minimum of 30 seconds. Add 600.0 ± 30.0 mL (20.4 ± 1.0 oz) of SAE 30-CD oil. Apply 4C-4030 Thread Lock Compound on the threads of the pipe plug and install the pipe plug. 
109-0868 Duo-Cone Seal Gp  The rubber toric seals and all the contacting surfaces must be clean and dry at assembly. Prior to assembly, apply a thin film of 6V-4876 Lubricant to the contacting surfaces of the metal seal rings. The metal seal rings must be assembled square. The rubber toric seal should not bulge and the rubber toric seal should not twist.
1 ± 2 mm (0.03937 ± 0.07874 inch) 
Before assembly, the surfaces must be clean and free from protective coating. 
124-9978 Idler Shaft  Install the idler shaft. Position the "R" that is stamped on the end face of the idler shaft backward into the front idler bearing. 
Install the pin with the slit in the range that is specified. Refer to Illustration 1 for the correct position of the pin.
Specified range is 40 degrees. 
Angle from centerline of idler shaft is 20 degrees. 
End play in axial direction:
Minimum is 0.26 mm (0.010 inch).
Maximum is 1.26 mm (0.050 inch)

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