Type "A" Travel Motor
| Required Tools | ||
|---|---|---|
| Part Number | Description | Qty |
| 27 mm (1.06 inch) Spanner Wrench | 1 | |
| Plug 13/16-16UN | 1 | |
| Remote drain hose with an inside diameter of 18 mm (0.71 inch) |
1 | |
| Container for measuring | 1 | |
| Track block assembly | 1 | |
| NOTICE |
|---|
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, "Caterpillar Tools and Shop Products Guide" for tools and supplies suitable to collect and contain fluids on Caterpillar products. Dispose of all fluids according to local regulations and mandates. |
 | |
| Illustration 1 | g00863285 |
Travel Motor (1) Connector (2) Drain hose | |
To check the travel motor performance, use the following procedure to measure the amount of case drain oil.
- Disconnect case drain hose (2) from connector (1). Install a plug 13/16 - UN in the open end of case drain hose (2) .
- Connect one end of remote drain hose to connector (1). Place the other end of remote drain hose into the container for measuring case drain oil.
- Block the track in order to prevent forward travel.
- Move the travel control lever forward fully for one minute.
- Measure the amount of case drain oil.
- Remove the track block. Move the machine forward in order to place the travel motor in a different position.
- Repeat Steps 1 through 5.
The following values specify the maximum acceptable flow of case drain oil when the main relief valve pressure is set at 34300 ± 490 kPa (5000 ± 72 psi).
- New travel motor ... 15 L/min (4 US gpm)
- Rebuilt travel motor ... 18 L/min (4.8 US gpm)
Type "B" Travel Motor
| Required Tools | ||
|---|---|---|
| Part Number | Description | Qty |
29 mm (1.14 inch) Spanner Wrench |
1 | |
| Plug 13/16-16UN | 1 | |
| Remote drain hose with an inside diameter of 20 mm (.78 inch) |
1 | |
| Container for measuring | 1 | |
| Stopper | 1 | |
| NOTICE |
|---|
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, "Caterpillar Tools and Shop Products Guide" for tools and supplies suitable to collect and contain fluids on Caterpillar products. Dispose of all fluids according to local regulations and mandates. |
- Stop the engine.
- Release the pressure in the hydraulic system. Refer to Testing and Adjusting, "Hydraulic System Pressure - Release" in this manual.
- Place stopper (17) in sprocket (16) in order to block forward left travel. Refer to Illustration 2.
 | |
| Illustration 2 | g00341414 |
Sprocket (left track) (16) Sprocket (17) Stopper | |
- Disconnect case drain hose (1) from connector (2). Install a plug 13/16 - UN in the open end of case drain hose (1) .
 | |
| Illustration 3 | g00342212 |
Travel Motor (1) Case drain hose (2) Connector | |
- Connect one end of remote drain hose to connector (2). Place the other end of remote drain hose into the container for measuring case drain oil.
- Start the engine.
- Increase the hydraulic oil temperature to 55° ± 5°C (131° ± 9°F).
- Move the left travel control lever forward fully for one minute.
- Measure the amount of case drain oil.
- Remove stopper (17) from sprocket (16) .
- Move the left travel control lever in order to reposition the travel motor.
- Place stopper (17) in sprocket (16) in order to block forward left travel.
- Repeat Steps 8 through 12 in order to obtain three measurements of case drain oil.
The following values specify the maximum acceptable flow of case drain oil when the main relief valve pressure is set at 34300 ± 490 kPa (5000 ± 72 psi) and the travel crossover relief valves are set at 36800 ± 1470 kPa (5350 ± 215 psi).
- New travel motor ... 15 L/min (4 US gpm)
- Rebuilt travel motor ... 18 L/min (4.8 US gpm)