Traxxas 45104-1 User Manual

Page 15

STEP

36:

Reinstall the carburetor with a new o-ring, header,

NEW glow plug, and engine mount. Use a new

header

gasket when reinstalling the header on

the engine. Reinstall the engine in the truck in the

reverse order of removal. Don’t forget to reconnect

the yellow grounding wire to the engine mount.

The rebuilt engine must now be broken in.

STEP

31:

Reinstall the backplate and a new backplate gasket

with the 3x8mm cap-head machine screws. Tighten

the screws in small

increments in a criss-cross

pattern until all the screws are tight.

STEP

32:

Install the appropriate size ball bearing into one

side of the clutch bell gear. The Nitro Sport comes

stock

with an

18-tooth

clutch

bell gear

that

requires

5x11mm ball bearings.

STEP

33:

Turn the gear over and install the other ball bearing.

STEP

34:

Install the split-beveled cone onto the crankshaft.

Next, install the flywheel. Install the clutch adapter

nut with a 10mm deep

socket. Grip the flywheel

with pliers while

tightening the adapter

nut.

STEP

35:

Install the clutch shoes

exactly as shown in the

drawing (leading edge

engagement). Next,

install a 5x8mm PTFE

washer followed by the

clutch bell gear (with

bearings installed). Install

the remaining 5x8mm

PTFE washer followed by

the E-clip (see step 14).

STEP

25:

To assemble the connecting rod and piston, place

a drop of castor oil in the top end of the connecting

rod. Insert the wrist pin through

the piston and the

top of the connecting rod. Secure the wrist pin with

the G-clip. Make sure the G-clip fits securely into

the groove machined in the piston. Be careful not to

scratch the sides of the piston.

STEP

26:

Reinstall the crankshaft into the engine and make

sure that it spins freely. Insert the connecting

rod and piston assembly through the top of the

crankcase. The G-clip should face the carburetor.

Put a drop of castor or after-run oil in the bottom

end of the connecting rod. Use your fingers to

gently push the end of the connecting rod over the

crankshaft journal.

STEP

27:

Place another

drop of oil

on the connecting

rod

bushing.

Rotate

the

crankshaft

several

times

distribute the oil.

STEP

28:

Insert the sleeve into the top of the crankcase.

Rotate the sleeve so that the notch in the sleeve will

line up with the pin in the crankcase. Holding the

engine upside down will make it easier for the sleeve

to go over the piston.

STEP

29:

Install

new

head

gaskets

the

head.

Use

one

thick

and one thin gasket. Reinstall the head using the

3x12mm

cap-head

machine

screws.

Tighten

the

screws in small increments, in a criss-cross pattern,

until all the screws are tight.

STEP

30:

Reinstall the starter shaft. Align the notch in the

starter shaft with the crankshaft journal pin (arrow).