evo našao sam nešto. opis je više amaterski ali bar ima slika da vidim izbliza jer je na autu mnogo tesno
speedometer drive - removal and refitting
General information
1 Two types of speedometer drive
mechanism have been fitted. Vehicles built
before 1987 have a conventional cable drive,
which consists of a helical-cut gear driven
directly from the differential by a dedicated
pinion gear. The gear drives the speedometer
remotely, by means of a cable with a rotating,
flexible inner shaft.
2 An erratic or inconsistent speedometer
display, such as needle flickering or jumping,
that cannot be cured by renewal of the
speedometer drive cable, may be caused by
gear wear; refer to the following sub-section
for details of its removal and refitting.
3 Vehicles built after 1987 are fitted with an
electronic transducer in place of the drive
gear. This device measures the rotational
speed of the transmission final drive, and
converts the information into an electronic
signal, which is then sent to the speedometer
module in the instrument panel. The signal is
also used as an input by the engine
management system ECU (and where fitted,
by the cruise control ECU, the trip computer
and the traction control system ECU).
Mechanical speedometer drive Removal
Caution: When removing the drive
gear from transmissions built
prior to serial number 310568, it is
possible for the gear to
accidentally drop down inside the
transmission as the locating ring is
removed; subsequent design changes
have eliminated the possibility of this
happening on later transmissions.
4 Trace the speedometer drive cable back to
the connection point on the right-hand side of
the differential housing, at the rear of the
transmission casing.
5 Unscrew the knurled nut by hand, and
withdraw the end of the drive cable. Where
fitted, recover the washer.
6 Wrap a length of thin copper wire around
the thread of the gear, and secure the free end
to a fixed point on the transmission; this will
prevent the gear dropping down inside the
transmission casing when the locating ring is
removed.
7 Prise out the locating ring using a thin, flatbladed
instrument such as a watchmaker's
screwdriver.
8 Pull the gear out of its seat, then extract and
discard the 0-ring seal.
9 Clean the gear thoroughly, and examine the
teeth for signs of wear or damage. Renew the
component if necessary, but bear in mind that
the drive pinion inside the differential casing is
likely to be worn as well, and this can only be
renewed as part of a complete transmission
overhaul.
Caution: Do not allow the gear to
fall into the transmission casing.
Refitting
10 Lubricate a new O-ring seal with clean oil,
and fit it into the groove in the gear body.
11 Fit the gear into its seat, using the length
of wire as before to prevent it from dropping
into the transmission. Rotate the gear to
ensure that the teeth engage with those on the
drive pinion inside the transmission.
12 Snap the locating ring into the groove in
the transmission housing, and remove the
anchoring piece of wire.
13 Push the drive cable into the socket at the
top of the gear, and screw on the knurled nut,
tightening it securely. Note: Where a washer
was fitted between the nut and the gear body,
ensure that it is fitted before the drive cable is
reconnected.
Electronic speedometer drive
Removal
14 Locate the speed transducer, which is on
the differential housing, at the rear of the
transmission case.
15 Unplug the wiring harness from the
transducer, at the connector.
16 Remove the transducer retaining screw,
and unscrew the unit from the transmission
casing (see illustration).
17 Recover and discard the O-ring seal.
Refitting
18 Refit the transducer by following the
removal procedure in reverse. Note: A new Oring
seal must be used on refitting.
7.16 Remove the speedometer transducer
retaining screw (arrowed) - post-1994
models