GLASS 3Y9783 - Caterpillar

Warm-Up and Break-In of the Differential
Note: Correct oil levels are critical in the axle housings. Check the oil level prior to operation. Allow sufficient time for the oil to fill all of the compartments in the final drive housing. Allow sufficient time for the oil to fill all of the compartments in the differential housing.Warm-Up
At start-up, operate the machine in fourth gear or in a lower gear until the oil is warm. Allowing the oil to warm-up gradually permits bearing components to maintain optimum operating positions. High speeds during a cold start-up will cause the temperatures of the rotating components to be very different from the temperatures of the stationary components. High temperature differences within the bearing may result in less durability of the bearing component.Break-In
The running surfaces of the gears and the bearings are conditioned during break-in. Break-in brings bearing components to optimum operating positions.
For 15 to 20 minutes, load the machine with 60% to 75% of the capacity.
Limit the top speed to fourth gear for approximately 15 to 20 minutes. Placing a significant load on the bearing components at a lower speed creates a favorable condition of contact between the mating surfaces.