ENGINE AR-PRIMARY 3028568 - Caterpillar

Illustration 1 g01344872
(1) Pin location
Table 1
Required Parts
   
Model    Quantity    Part Number    Tightening Torque    
303 CR     1     299-8350    
600 N m (440 lb ft)    
304CR 305CR     1     299-8349    
600 N m (440 lb ft)    General Installation Procedure
Remove original pin.
Ensure that bearings are not damaged, cracked, or badly worn. Replace the bearings if the bearings are not in good condition.
Lubricate the expander pin and the expansion sleeves with bearing grease for easy insertion.
Insert the expander pin into the bore. Then install the sleeves, bolts, and washers. Tighten the bolts hand tight.
Tighten both sides of the pin assembly alternately until full torque is achieved.
Ensure that the clearance from the washers to the edges of the boss on either side of the pin is equal to 3 mm (0.1181 inch ).
It is important to ensure correct fitting. Ensure that the washers do not contact the edges of the boss. The pin needs to be repositioned if either washer contacts the lug.
Lubricate the pivot before operating the machine.
Start and operate the machine. Tighten the bolts again until full torque is achieved. This procedure ensures that the expansion sleeves have properly seated.Pin Maintenance
Expander pins will exhibit some loss of torque after both the initial installation. Proper torque is important to the installation process and crucial to the success of the repair. Follow the schedule in Table 2 for proper torque.
Table 2
Hours of Operation     When you torque the bolts and the wrench clicks without adding any additional torque, you have successfully seated the expansion sleeves.    
1 hour    
3 hours    
10 hours or 1 day    
40 hours or 4 days