1 - Insert a 1/4” x 3/8” Flanged Bearing [80] into each of the rear ride
height sliders [19].
2 - Slide the rear axle [81] through the 2mm red spacer [82], then
through a 1/4” shim [83] and then through the 2 rear pod bearings.
3 - On the protruding axle, slip another 1/4” shim over the axle, then
the 5mm red spacer [84], and then finally the Left Clamping Hub
[85]. Slip the Left Hub on with the small flange toward the 5mm
spacer. The larger flange should face out toward where the wheel
will mount.
4 - Lock the hub with the small 2.5 x 6mm cap screw [86] so that the
axle has a very small amount of side to side play in it. The thickness
of 2 sheets of paper is plenty. You don’t want excessive play here,
you’re just making sure to not pinch the bearings.
Bag 9
Differential
10
Bag 8
Differential Axle
1/4” x 3/8”
Flanged Bearing
80
Toward car
Small flange
Large flange
81
83
1/4” Shim
83
Red Clamp Hub
85
m2.5 x 6mm
Socket Cap
86
80
83
84
85
19
19
82
80
86
1/4” x 3/8”
Plain Bearing
91
Lip
Diff Spacer
93
* Balls in outer ring
of holes in gear *
Small lip
toward bearing
1/4” x 3/8”
Flanged Bearing
80
D
IFF
A
SSEMBLY CONTINUED
...
The diff spacer [93] has a small machined
lip on one side, point that lip toward the
shims and bearing. Now, place the spring
washer [94] so that the cone points away
from the gear. The outside of the washer
should be against the diff spacer, and the
inside of the washer should be against the
diff nut [95], which now goes on last. *Be
sure the 2 “D” rings have settled into their
notches. Just snug the nut so the parts stay
together on the diff axle. Correct diff tension
needs to be set with tires on the car.
3 - Setting the Diff -
Once the tires are on: Adjust the diff nut so that the tires spin back and forth
freely when holding the spur gear, but it is very difficult to slip the spur gear with your thumb when holding
both tires.
over-tighten, or the outer diff hub bearing will get crushed and ruin the diff! Re-check
diff tension after the first run.
DO NOT
Spring Washer
94
Nylon Diff Nut
95
2 - D
IFF
A
SSEMBLY
-
*(Holding the car on it’s side, with the rear
axle pointing upright will ease assembly of the diff.) Place 1 diff ring
[90], and then a 1/4” x 3/8” plain bearing [91] over the end of the
axle. Align the diff ring so that it notches into the axle flange. Place
the assembled gear with the greased diff balls over the axle and
push it down over the plain bearing. Next, insert the other plain
bearing into the back of the Diff Hub [92]. Then, align the second diff
ring with the notch on the back of the diff hub. *(place a small dab of
the diff grease on the hub first to hold the ring in place.)* Now, slide
the hub, bearing, & diff ring down over the axle. Next, slide a flanged
bearing [80] over the axle and into the front of the diff hub. After the
bearing is seated into the hub, place two 1/4” shims [83] over the
axle and slide them up against the bearing.
1 - I
NSTALL AND GREASE THE DIFF BALLS
-
Pop the 3/32” diff balls [87] into each of the outer ring of holes in the
diff gear [88]. The balls should be inserted into the gear from the side that does NOT say CRC on it. The balls will
slide in easily from this side and not fall out the other side. After all the balls are in the gear, place a small dab of
silicone diff grease [89] on each ball. Use very little! Just enough to keep the balls from falling back out will be the
perfect amount for lubricating the diff.
1/4” Shim
83
90
91
88
89
87
90
91
92
80
83
93
95
94
