STEP-BY-STEP INSTRUCTIONS

1. Press the button on the back panel of the Sany SY35U to lift the back panel off the machine and locate the two filters.
2. Find the underpanel on the bottom of the back of the machine. This is where you’ll access the oil drain. Remove the four bolts on the under panel to detach the panel and access the oil drain.
3. Place a pan under the oil drain and remove the cap so the oil can drain as you work on the filters.
4. Unscrew the old oil filter and fuel filter and remove them. Once the filters are removed, dispose of the used fuel appropriately.
5. Take your fresh filters and use a small amount of oil to pre-lubricate the rubber seal on the filters before you reattach them to the machine.
6. Twist the fresh filter back into place on the machine until it makes contact with the metal. Give the filter another half turn to secure it. For fuel filters with an upside down application, you can pre-fill them before installing them.
7. Once the oil has finished draining into the pan, remove it. Replace the oil drain cap and under the panel at the bottom of the machine. Inspect the back of the machine while it is open to be sure there are no other issues.
8. Refill the machine with fresh oil. Close the back of the machine if there are no other issues.
9. Replacing the fuel filter decreases fuel pressure throughout the machine. Turn the machine off and on to help rebuild fuel pressure. Do not turn the keys to start. After rebuilding your fuel pressure and checking that there are no other alerts, your service is complete.

IN-DEPTH NOTES

Step 1-2

Prepare Your EXCAVATOR

Open the back compartment of the Sany SY35U and locate the two fuel filters. Then, locate the underpanel on the bottom of the machine, this is where you will access the oil drain.

It’s a good idea to wear safety glasses while removing the panel because debris can get stuck underneath. To remove the panel, use a 15-millimeter socket wrench to unscrew the four bolts on the panel. While removing the panel, you can let the plate rest on the subframe to prevent the panel from crashing down.

Steps 3-4

Drain The Oil and Remove the Filters

Take a pan and place it underneath the oil drain opening so the oil can drain as you work on the filters. You can elevate the pan closer to the mouth of the drain to prevent the oil from splattering. Use a 19-millimeter socket wrench to remove the oil drain plug so the oil can drain as you work on the filters.

As the oil drains, it’s time to remove the used filters. Return to the back of the machine and unscrew the oil filter and fuel filter. Fuel filters are typically full and may spill out of the top once removed. Do not be alarmed. Once removed, dispose of the used fuel appropriately.

Steps 5-6

Install The New Oil And Fuel Filters

Prep the new filter by using some of the fresh oil to pre-lubricate the rubber seal on top. The lubricant allows the filter to make smooth contact when you twist it in. The lubricant also helps for easy removal of the filter in the future and prevents the rubber gasket from cracking. Hand-tighten the new oil filter into place until it makes contact with the metal. Once it makes contact, give the filter another half turn to secure it. For fuel filters with an upside down application, it's easier to pre-fill them with fuel before installing them. This will save time spent on priming the whole system.

Step 7-8

PUT THE MACHINE BACK TOGETHER

Once the oil is fully drained from the machine, remove the pan of oil from underneath. Screw the oil drain plug back in. Always properly dispose of your drained oil.

Before replacing the grate, we recommend partially screwing in one of the bolts. The machine has cutouts which allow you to slide the panel in and secure the bolt. Proceed to screw in the rest of the grate on the bottom back into the machine.

You can use this time to inspect the motor for any issues while the back of the machine is still open.

Step 9

REFILL THE MACHINE WITH FRESH OIL

Refill the machine with fresh oil. Make sure to use the dipstick to check the level. When the dipstick reads ¾ full, this is the perfect place to stop. Once the machine is filled and there are no issues found, you can close the back of the machine.

Step 10

FIRE UP YOUR EXCAVATOR

Now that the filters have been replaced, it is time to fire your machine back up. During this process, your machine loses fuel pressure. To rebuild it, prime the lines again by turning the ignition over a few times. Remember, do not start the machine.

The dashboard will alert you if there are any issues. Check for low oil levels, low fuel pressure or check engine lights. If there are no issues, your service is complete.