[Roadsters] 5-Speed Transmission Speedometer Pinion Carrier

[Scott Sheeler]

Bob,

It doesn't unscrew - it just slides in the side of the case and is sealed by an o ring.  The pinion is secured in the sleeve by a small spilt pin.

>From Part II of the Datsun Roadster Book.

Remove the speedometer drive gear by releasing the set bolt and retainer plate from the side of the tail shaft housing.  Pull the speedometer drive sleeve out of the casing.  Inspect the plastic gear for wear and replace it if the teeth are damaged.  Do this by driving the teeny split pin out of the side of the sleeve.  If you replace the gear, you can also renew the seal that is inside the sleeve.  Replace the outer sleeve o-ring.  Oil the o-ring to ease assembly into the tail shaft housing, reinsert the sleeve, and secure the retaining plate in the sleeve’s notch with the set bolt and lock washer.



Scott Sheeler

________________________________
From: Datsun-roadsters <datsun-roadsters-bounces at autox.team.net> on behalf of RWM via Datsun-roadsters <datsun-roadsters at autox.team.net>
Sent: Wednesday, April 28, 2021 11:59 AM
To: 'Datsun Roadster List' <datsun-roadsters at autox.team.net>
Subject: [Roadsters] 5-Speed Transmission Speedometer Pinion Carrier

Any ideas on why a 5-speed speedometer pinion carrier would refuse to
budge from the side of the transmission (so pinion and carrier can be
replaced with correct # teeth and alternate carrier)?

The locking tab was removed, but the pinion carrier will not rotate CCW.

Pinion carrier hasn't been removed in 50 years, but trying to think of a
reason it would not unscrew.

TIA.

- Bob Mann, '68 2000 Solex

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