|Required Tools    |
|Tool    ||Part Number    ||Part Description    ||Qty    |
|A    ||159-3337    ||Chain Tension Adjuster    ||1    |
|B    ||-    ||Loctite 5900    ||-    |
|C    ||-    ||Loctite 5127    ||-    |
|D    ||1U-8846    ||Gasket Sealant    ||1    |
Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting, and repair of the product. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids.
Refer to Special Publication, NENG2500, "Dealer Service Tool Catalog" for tools and supplies suitable to collect and contain fluids on Cat products.
Dispose of all fluids according to local regulations and mandates.
Note: Cleanliness is an important factor. Before assembly, thoroughly clean all parts in cleaning fluid. Allow the parts to air dry. Do not use wiping cloths or rags to dry parts. Lint may be deposited on the parts which may cause trouble. Inspect all parts. If any parts are worn or damaged, use new parts for replacement. Dirt and other contaminants can damage the precision component. Perform assembly procedures on a clean work surface. Keep components covered and protected at all times.
- The front axle assemblies and the rear axle assemblies are driven by different drive chains. The drive chains are installed on Drive Sprocket (B) and Drive Sprocket (D) . The drive sprockets are mounted on the drive shaft of the hydrostatic piston motor. The two drive sprockets are the same component. The drive sprocket on the hydrostatic piston motor has sprocket drives on different planes. The drive sprockets on the front and rear axles are the same component. The sprockets on the front and rear axles are mounted at 180 degrees of opposite direction. Note that Sprocket (A) is in line with Drive Sprocket (D) and that Sprocket (C) is in line with Drive Sprocket (B) . The drive sprockets are installed in a manner that will allow the drive chains to turn in a straight line. If any of the sprockets are installed incorrectly the drive chains cannot be installed properly. Note the orientation of all of Drive Sprocket (B) and Drive Sprocket (D) . Note the orientation of Sprocket (A) and Sprocket (C) on the axles.
- Clean the mating surfaces of the tandem drive and the piston motor.
- Apply Tooling (B) on the edge of piston motor (16) .
Note: If you are replacing the studs, clean the mating surfaces, and apply Tooling (C) or Tooling (D) to the flange of the stud.
- Use a suitable lifting device to install piston motor (15) . The weight of the piston motor is approximately 47 kg (104 lb). Install nuts (14) . Tighten the nuts according to the pattern in Illustration 4. Torque the nuts to 125 ± 20 N·m (92 ± 15 lb ft).
- Connect hose assemblies (13) .
- Install spacer (12) onto the shaft of the piston motor. The spacer must be to the inside of the sprockets.
Note: The chamfered side of the spacer must face toward the piston motor.
- Install drive chain assembly (11) . Install inner sprocket (10) .
- Install drive chain assembly (9) . Install outer sprocket (8) .
- Install washer (7) . Install bolt (6) . Torque the bolt to 100 ± 20 N·m (74 ± 15 lb ft).
- Adjust the drive chain tension. Refer to Disassembly and Assembly, RENR4838, "Chain (Drive) Tension - Adjust".
- Refill the drive chain oil into the tandem housing. Refer to Operation and Maintenance Manual, SEBU7468, "Drive Chain Case Oil - Change".
- Refill the hydraulic tank. Refer to Operation and Maintenance Manual, SEBU7468, "Refill Capacities".
- Install the tire and rim. Refer to Disassembly and AssemblyRENR4838, "Tire and Rim - Remove and Install".
- Install the gear pump. Refer to Disassembly and AssemblyRENR4838, "Gear Pump - Install".