Return to the BUILD
“Next you’ll build the gearbox and install it on your engine, then cover the lower engine up by adding the crankcase closure.”
Materials: All of the parts in this stage are plastic.
Attaching the Gearbox
Press the two pins of the Housing Cap into the matching holes at this location on the Left Differential Cover. The D-shaped holes in both parts should be aligned, as shown:
Slide the two posts on the back of this Left Differential Cover assembly through these holes of the Differential Body, then firmly press them together until flush, as shown:
Firmly press the two pins of the Right Differential Cover into the holes of the Left Differential Cover, capturing the Differential Body in between them, as shown:
Fit this Differential assembly to the Transmission/Differential Housing as shown, aligning the locating pin to the center hole:
Secure these parts together from the other side with two (2) Type B screws.
To create a more solid connection, I also used a drop of super glue on the locating pin here:
Retrieve your Engine assembly from the previous stage. Fit the Transmission/Differential Housing assembly to this side of the Engine Base, as shown:
Align the tall posts of the Transmission/Differential Housing assembly under the holes in the two tabs of the Engine Base and secure these parts together with two (2) Type B screws, as shown:
Fit the raised posts of the Lower Engine Crankcase Closure (cover) over the matching posts inside the Engine Base.
On the bottom of the engine, there is a T-shaped tab (circled below) and a alignment hole (arrow below):
On the Lower Engine Crankcase Closure, there are a matching slot (circled below) and locating pin (arrow below):
As you install this Crankcase Closure, align the slot to the T-shaped tab and press the locating pin into the alignment hole, as shown:
The locating pin may take a bit of force to fit completely flush. Just make sure this side of the Closure is seated all the way, as shown:
Secure the Lower Engine Crankcase Closure to the Engine Base with two (2) Type A screws.
This is your friendly reminder to try using 3-in-One Oil on all screws going into metal:
Once again, almost all of the bolt heads on these transmission parts was already painted so I didn’t need to add any color. Fantastic!
Stage 19 – Crankcase Cover, Oil Sump/Cover