Download DATSUN PICKUP 250 Series Service Repair Manual –

Replacing the planetary gear in the gearbox of a Datsun Pickup 250 can seem daunting, but with careful steps and some basic tools, you can tackle this project. click here for more details on the download manual…..

Here’s a straightforward guide to help you through the process:

### Tools and materials Needed:
– Socket set and wrenches
– Screwdrivers (flathead and Phillips)
– Pliers
– Torque wrench
– Replacement planetary gear set
– Gasket sealant or new gasket (if needed)
– Oil for the gearbox (check your vehicle’s manual for specifications)
– Clean rags
– Drain pan

### Safety Precautions:
1. **Work in a well-ventilated area** to avoid inhaling fumes.
2. **Wear safety glasses and gloves** to protect yourself.
3. **Ensure the vehicle is securely lifted** on jack stands if you’re working underneath it.

### Step-by-Step Guide:

#### 1. **Preparation:**
– **Disconnect the Battery:** Start by disconnecting the negative terminal of the battery to prevent any electrical issues.
– **Gather Your Tools:** Have all your tools and replacement parts ready.

#### 2. **Drain the Gearbox Oil:**
– Place a drain pan under the gearbox.
– Remove the drain plug (usually at the bottom of the gearbox) and let the oil completely drain out.

#### 3. **Remove the Gearbox:**
– **Disconnect the Gear Shifter:** Depending on the design, you may need to remove the gear shifter or linkage to access the gearbox.
– **Unbolt the Gearbox:** Locate the bolts holding the gearbox to the engine and remove them. There may also be bolts securing it to the frame or crossmember.
– **Support the Gearbox:** Use a jack to support the gearbox as you remove it.
– Carefully slide the gearbox out from the vehicle.

#### 4. **Disassemble the Gearbox:**
– **Remove the Cover:** Use the appropriate screwdriver or socket to remove the bolts holding the gearbox cover. Be cautious as there may be springs or components under pressure.
– **Take Note of Assembly:** As you remove parts, take pictures or notes to Remember how everything fits together.
– **Remove the Planetary Gear Set:** Locate the planetary gear set within the gearbox. Carefully remove it, noting how it is positioned.

#### 5. **Install the New Planetary Gear Set:**
– Place the new planetary gear set into the gearbox in the same position as the old one.
– Make sure it rotates freely and is seated properly.

#### 6. **Reassemble the Gearbox:**
– Reattach the gearbox cover, ensuring any gaskets are in good condition or replaced.
– Tighten the bolts securely but be careful not to overtighten, as this could damage the cover.

#### 7. **Reinstall the Gearbox:**
– Carefully lift the gearbox back into position under the vehicle.
– Reattach any bolts, ensuring everything is aligned properly and secured.
– Reconnect the gear shifter or linkage as necessary.

#### 8. **Refill Gearbox Oil:**
– Replace the drain plug and refill the gearbox with the appropriate oil. Check your vehicle’s manual for the correct type download DATSUN PICKUP 250 workshop manual and amount.

#### 9. **Reconnect the Battery:**
– Reconnect the negative terminal of the battery.

#### 10. **Test Drive:**
– Start the vehicle and let it idle for a few minutes. Check for any leaks around the gearbox.
– Take the vehicle for a short test drive to ensure everything is functioning properly.

### Final Tips:
– **Take Your Time:** Don’t rush through the process. Ensure each step is done correctly.
– **Consult a Manual:** If you have access to a service manual for your Datsun Pickup 250, it can provide specific torque specifications and additional details about your gearbox.
– **Ask for Help:** If you feel unsure at any stage, consider asking a friend with more mechanical experience for assistance.

By following these steps, you should be able to replace the planetary gear in your Datsun Pickup 250’s gearbox with confidence!
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