R1600G Load Haul Dump Power Train Differential Pinion Preload - Adjust Caterpillar


Differential Pinion Preload - Adjust
`



Illustration 1g00922820

(1) Pinion shaft

(2) Bearing cone

(3) Bearing cup

(4) Housing

(5) Bearing cup

(6) Bearing cone

(7) Nut

(8) Washer

Note: Freezing of the cup or heating of the cone may be used. Reset the cups or cones with a driver or press after parts have reached a uniform temperature. Heat the cone to a limit of 135°C (275°F) maximum for 4 hours maximum. To prevent rusting, lubricate the bearings after the bearings have cooled. Freeze the cup to a limit of −29° C (−20° F). Wipe the cup dry. Remove any frost. Allow the cone to cool. Lubricate the cone in order to prevent rusting.

  1. Install bearing cups (3) and (5) in housing (4). Bearing cups must be seated against the shoulders in housing (4) .

  1. Install bearing cone (2) on pinion shaft (1). Bearing cone (2) must be seated against the shoulder on pinion shaft (1). Lubricate the bearing cone (2) .

  1. Install pinion shaft (1) in housing (4). Press cone (6) of the bearing into place. Leave a small amount of end play. Lubricate bearing cone (6) .

  1. Lubricate washer (8) and nut (7) and install washer (8) and nut (7). Position the assembly vertically in a soft jawed vise. Tighten the vise against the teeth on pinion shaft (1) .

  1. Place a 203 mm (8.0 inch) torque wrench on nut (7).

  1. Turn housing (4) with the torque wrench. Tighten nut (7) until the torque wrench reading in the following chart is reached.

    Table 1
    Pinion Rolling Torque (1)    
        Actual Torque At The Pinion     Torque Wrench Reading    
    New Bearings    
    0.9 to 1.8 N·m (6 to 12 lb in)    

    0.5 to 1.1 N·m (4 to 8 lb in)    
    Used Bearings    
    0.45 to 0.90 N·m (3 to 6 lb in)    

    0.25 to 0.55 N·m (3 to 4 lb in)    
    ( 1 ) The measurements are with a 203 mm (8.0 inch) torque wrench.

  1. For pinion rolling torque that exceeds the specification, back off nut (7) for one eighth of a turn. Reseat bearing cone (6) and washer (8) against nut (7). Tighten the nut to the correct specification.

    Ensure that there is zero end play of pinion shaft (1) .

    Find the torque wrench reading by using the following formula for any other length of a torque wrench.

    Table 2
    C =     B × T        
    B × A    

    (C) The torque wrench reading is measured in Newton meters.

    (B) Measure the length of the torque wrench.

    (A) Measure the bolt circle radius of the pinion housing in meters.

    (T) The rolling torque specification for the pinion bearing preload is 0.9 to 1.8 N·m (6 to 12 lb in).

  1. Get the correct torque to turn the pinion.



    Illustration 2g00104718

    (A) Minimum length 4.7 mm (0.185 inch)

    (B) Minimum depth 2.5 mm (0.098 inch)

    (C) Position the tool at an angle of 10 degrees to 30 degrees.

    (D) Spherical diameter of the tool 7.5 to 8.0 mm (0.295 to 0.315 inch)

  1. Stake nut (7) by peening the collar on the nut into the key slot in pinion shaft (1). Use a suitable punch with a spherical nose that has a diameter of 7.5 to 8.0 mm (0.295 to 0.315 inch).

    Best results are achieved by holding the punch against the nut face at 10 degrees to 30 degrees with respect to the nut face. Refer to Illustration 2. The desired results are a stake that is 4.7 mm (0.185 inch) minimum length and 2.5 mm (0.098 inch) minimum depth.

    In order to disassemble the nut during servicing, drive a wedge under the stake. Lift the stake. The nut may be reused if the collar is not cracked during removal or restaking.

Information System:

C18 Engine for Caterpillar Built Machines Component Location
C4.4 and C6.6 Engines for Caterpillar Built Machines E360 Low Engine Oil Pressure
C4.4 and C6.6 Engines for Caterpillar Built Machines Event Codes
R1600G Load Haul Dump Power Train Output Transfer Gears - Adjust
R1600G Load Haul Dump Steering System Articulated Hitch
R1600G Load Haul Dump Machine Electrical System Circuit Breaker
R1600G Load Haul Dump Power Train Torque Converter and Updrive
938H Wheel Loader and IT38H Integrated Toolcarrier Hydraulic System Ride Control Valve (2-Function, 3-Function Control Valve)
587R Pipelayer Machine Systems Pilot Control Valve - Install - Load, Boom and Counterweight
587R Pipelayer Machine Systems Pilot Control Valve - Remove - Load, Boom, and Counterweight
Bench Test Procedure for a 14L, 120M, 120M Series 2, 12M, 12M Series 2, 12M Series 3, 140M, 140M Series 2, 140M Series 3, 160M, 160M Series 2, and 160M Series 3 Motor Grader Transmission {3030, 3073}
120K Motor Grader Capacities (Refill)
R1600G Load Haul Dump Power Train Differential Backlash and Bearings - Adjust
R1600G Load Haul Dump Braking System Brake Release System
R1600G Load Haul Dump Braking System General Information
R1600G Load Haul Dump Braking System Service and Parking Brake System
C4.4 and C6.6 Engines for Caterpillar Built Machines E361 High Engine Coolant Temperature
C4.4 and C6.6 Engines for Caterpillar Built Machines E539 High Intake Manifold Air Temperature
160M and 160 Motor Grader Machine Systems Bank Valve - Install - Rear Frame
3412E Engine for Caterpillar Built Machines Injection Actuation Pressure Control Valve - Test
C4.4 and C6.6 Engines for Caterpillar Built Machines 5 Volt Sensor Supply Circuit - Test
140M and 150 Motor Grader Power Train Transmission - Assemble
216B3, 226B3, 236B3, 242B3 and 252B3 Skid Steer Loaders, 247B3 and 257B3 Multi Terrain Loaders and 259B3 Compact Track Loader Sprocket - Inspect
247B2 and 257B2 Multi Terrain Loaders Caterpillar Approved Work Tools