Download Kobelco SK135SRLC-1E Hydraulic Crawler Excavator Service –

Posted on February 18, 2025 by Repair Manual

Repairing the differential gear on a Kobelco SK135SRLC 1E Hydraulic Crawler Excavator is a complex task that requires a good understanding of mechanical systems, proper tools, and safety procedures. click here for more details on the download manual…..

Below, I’ll provide a detailed overview of the components involved, the repair process, and some safety considerations. However, please remember that working on heavy machinery can be dangerous, and it is advisable to consult the manufacturer’s service manual or seek help from a professional mechanic if you are not experienced.

### Components Involved in Differential Gear Repair

1. **Differential Housing**: This houses the differential gears and is connected to the axle shafts. It protects the internal components from dirt and debris.

2. **Differential Gears**: This includes the ring gear, pinion gear, and spider gears (or planetary gears). These gears allow for the transfer of power from the drive motor to the wheels while accommodating speed differences during turns.

3. **Axle Shafts**: These connect the differential to the wheels and transfer torque from the differential to the wheel hub.

4. **Bearings**: These support the differential gears and ensure smooth rotation. Common types include tapered roller bearings and ball bearings.

5. **Seals**: These prevent fluid leaks and keep contaminants out of the differential housing.

6. **Lubricating Oil**: This is used to lubricate the gears and bearings, reducing friction and heat.

7. **Fasteners**: Bolts and nuts are used to secure the differential housing and other components.

### Tools Required

– Socket set and ratchet
– Torque wrench
– Screwdrivers (flat and Phillips)
– Pry bar
– Gear puller
– Cleaning materials (degreaser, rags)
– Safety gear (gloves, goggles, etc.)
– Hydraulic jack and jack stands
– Engine hoist or crane (if necessary)

### Repair Process

#### Step 1: Safety First
– **Wear personal Protective Equipment (PPE)**: Gloves, goggles, and steel-toe boots.
– **Work in a well-ventilated area**: To avoid inhaling fumes from the machinery.
– **Ensure the machine is turned off** and completely cooled down before starting work.

#### Step 2: Prepare the Excavator
1. **Park the Excavator on a level surface**.
2. **Engage the parking brake**.
3. **Disconnect the battery** to prevent any accidental starts.

#### Step 3: Remove the Tracks
1. **Remove the track guards** to access the undercarriage.
2. **Use a hydraulic jack** to lift the crawler excavator.
3. **Remove the track tension** to allow for easier disassembly.

#### Step 4: Access the Differential
1. **Remove any protective covers** that are obstructing access to the differential.
2. **Drain the differential oil** using a pump or by removing the drain plug.
3. **Unbolt the differential housing** from the axle assembly. This may involve removing several fasteners.

#### Step 5: Disassemble the Differential
1. **Carefully remove the differential housing**. You may need to use a pry bar or similar tool if it’s stuck.
2. **Inspect the condition of the bearings and seals**. If they are worn or damaged, they will need to be replaced.
3. **Remove the differential gears** (ring gear, pinion gear, download Kobelco SK135SRLC 1E Hydraulic Crawler Excavator workshop manual and spider gears) using a gear puller if necessary.
4. **Take note of the order and orientation of components** for reassembly.

#### Step 6: Inspect Components
1. **Check for wear, pitting, or damage** on all gears and bearings.
2. **Measure the backlash** and tooth contact patterns using a dial indicator to ensure proper alignment.
3. **Replace any worn or damaged components** with OEM parts.

#### Step 7: Clean and Reassemble
1. **Thoroughly clean all components** with a degreaser and rags.
2. **Inspect and replace seals** to prevent leaks.
3. **Reassemble the differential** in the reverse order of disassembly. Ensure that all gears are aligned as per specifications.
4. **Tighten all fasteners** to the manufacturer’s torque specifications using a torque wrench.

#### Step 8: Reinstall and Test
1. **Reinstall the differential housing** and secure with bolts.
2. **Refill the differential with lubricating oil** as per the manufacturer’s specifications.
3. **Reattach the tracks** and any protective covers.
4. **Reconnect the battery**.
5. **Test the excavator** to ensure that the differential operates smoothly without any unusual noises or issues.

### Conclusion

Repairing the differential gear on a Kobelco SK135SRLC 1E Hydraulic Crawler Excavator is a detailed process that requires precision and attention to detail. Always refer to the specific manufacturer’s service manual for detailed specifications and instructions. If you are not confident in your ability to perform this repair, consider consulting a professional mechanic or technician.
A tow hook is a crucial automotive component designed to facilitate the towing of vehicles, particularly in situations where a vehicle is immobilized due to mechanical failure, accidents, or when it needs to be transported. Typically made from durable materials, such as steel, tow hooks are engineered to withstand substantial forces and stresses during towing operations.

Tow hooks are usually mounted Either at the front or rear of a vehicle, and their design allows for easy attachment of a towing strap or chain. Many modern vehicles are equipped with built-in tow hooks, while others may require aftermarket installation. The positioning and accessibility of the tow hook are essential, as they must be readily reachable to ensure a quick and efficient towing process.

In off-road vehicles, tow hooks are particularly vital, as they often encounter challenging terrains where getting stuck is common. During off-roading, having robust tow hooks can mean the difference between a minor inconvenience and a significant recovery operation. Additionally, tow hooks are often required in motorsport and racing applications, where quick recovery is essential to maintain competitive momentum.

Safety is a paramount concern when using tow hooks. Proper installation and adherence to weight limits are critical to prevent accidents during towing. When utilized correctly, tow hooks provide a practical solution for vehicle recovery, ensuring that drivers can safely navigate unforeseen circumstances.