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Traxxas 45104-1 User Manual

Page 14

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14

STEP

15:

Remove the connecting rod and piston through the

top of the crankcase.

STEP

16:

To remove the connecting rod from the piston, use

a sharp-pointed tool to remove the small metal

G-clip

in

the

side

of the

piston.

Do

not

re-use

the

old G-clip. When installing a new connecting

rod,

use the supplied new G-clip.

STEP

21:

Remove the crankshaft by pulling it straight out of

the crankcase.

STEP

22:

The bearings are press-fit into the crankcase. To

remove them, the crankcase must be heated with

a heat gun or torch. The crankcase will expand

with heat and release the bearings. To avoid

the possibility of burns

or other damage, do not

attempt

to remove the

bearings.

Clean

the

bearings

by flushing them with denatured alcohol and then

place one or two drops of after-run oil on the races.

STEP

23:

Before

installing

a

new

connecting

rod,

you

can

increase connecting rod life by polishing the

crankshaft journal. Use 1200 grit sandpaper to

remove the surface scratches followed by liquid

metal polish to buff the crankshaft journal to a bright,

sm

oo

th

sh

ine

.

R

in

se

th

o

ro

ug

hl

y

wi

th

d

en

at

ur

ed

alcohol. Lube with after-run oil.

STEP

24:

Use the 1200 grit sandpaper and the liquid metal

polish on the wrist pin also. Rinse thoroughly with

denatured alcohol and lube with after-run oil.

STEP

13:

Pull the sleeve straight up and out of the crankcase.

If

the

sleeve

will

not

move,

rotate

the

crankshaft

until

the sleeve pushes up.

STEP

14:

Rotate the crankshaft to bottom dead center. Lightly

grab the connecting rod with a pair of needlenose

pliers and gently pull it off of the crankshaft journal.

Removing the clutch and

flywheel

STEP

17:

It is not necessary to remove the clutch assembly

unless

you

are

servicing

the

clutch,

crankshaft,

or

engine bearings. Use the tip of a small screwdriver

to remove the E-clip that holds the clutch bell gear.

STEP

18:

Remove the clutch bell gear and the clutch shoes.

Note

that

there are

two

5x8mm PTFE

washers, one

on each side of the clutch

bell gear. Check the clutch

shoes for

excessive wear

or

cracking

around

the

pin

holes. If the clutch shoes

are worn to

the point

that

the clutch spring contacts

the clutch bell, then the

shoes must be replaced.

STEP

19:

Grip the flywheel with a

pair of pliers (locking pliers

work best). Remove the

clutch adapter nut with a

10mm deep socket. Hold

the engine just above

your workbench and tap

the flywheel from behind

with a non-marring hammer (plastic or wood).

Several easy blows may be necessary to release the

flywheel and split beveled cone.

STEP

20:

The flywheel and the split-beveled

cone should pull

smoothly

off of the crankshaft.