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Trekker - Squab
REFITTING / FITTING
12
2
752127
752361
1
C. Refit the primary
transmission.
Fitting a variator
Warning: do not delete any piling up
element or reduce the dimensions.
This would lead to a tightening of the
nut on the grooves of the crankshaft
assembly and not on the fixes driven
face and hence would destroy the
crankshaft assembly.
- Place the washer 12.35 x 19.75 X 1
on the crankshaft assembly.
- Position the variable speed drive
while keeping the movable driven
face, the 6 rollers and the variation
ramp with the thrust spacer under
pressure.
- Fit the drive belt.
- Position the start ring gear plate
while checking that it is properly fitted
on the grooves of the crankshaft as-
sembly, position the nut and tighten by
hand.
- Check that the ring is flush with the
tool 752370.
- Tighten the nut to 4m.da.N.
Instailing the kick starter (LH
cover)
- Fit the spindle bushing and the nylon
spacer (mark 1).
- Position the return spring, fit the
longest hook onto the pin on the cover.
- Instail the spindle into the bushing
after lubrication.
- Fit the second hook of the spring
onto the toothed section.
- Wind the spring slightly so as to
position the kick starter spindle onto
the central rib of the cover.
- Install the washer and circlips onto
the axis of the toothed section.
- Position the drive ratchet:
place the washer over the boss of the
ratchet shaft housing
load the kick starter by about 1/8 of a
turn in order to position the ratchet
(after lubricating the
shaft),
position the ratchet stop in its housing.
(Mark 2).
PRIMARY
TRANSMISSION
A. Clutch and driven puiley
assembly :
1. Dismantling:
- Hold the assembly using tool 752127
in a vice and loosen the special nut
with the wrench 752361 (39) or a 34
mm wrench depending on the clutch.
- Remove in the followin’g order :
. the clutch shoe assembly
. the spring
. the spring guiding sleeve
. take out the three guide pins of the
variable speed drive,
. separate the movable driven face
from the fixed driven face.
2. Refitting
- Check the oil seals of the movable
driven face.
- Assemble the fixed and movable
driven faces.
- Refit the 3 guide pins and lubricate
the ramp of the variable speed drive.
- Position the sleeve having checked
that both «0» rings are in good
condition.
- Position the spring and the clutch
assembly.
- Using the tool 752127, compress the
spring and check that the nut is
tightened to 5m.daN.
B. Drive pulley - variator
assembly :
1. Dismantling
- Remove the thrust spacer L = 38mm
and the 3 bolts that secure the
housing and the stop (no 7 wrench).
- Remove the housing using a
screwdriver.
- Remove the stop, the ramp plate, the
3 plastic spacers and the 6 rollers, the
«0»ring (81/1.5).
2. Inspection
- After cleaning, check the rollers in
particular. Their diameter should not
show any flat spots.
3. Refitting
- Reverse opérations to dismantling
having lubricated the 6 rollers, the
ramp, and the movable
clutch plate bore with high
température grease 752093.
NOTE :
On the first generation FB engines
(Zenith, Buxy, Speedake), the rollers
of the drive pulley were assembled
without grease.