Results 1 to 3 of 3

Thread: Speedo pinion gear keeps wearing out.

  1. #1
    Registered User
    Member ID
    CZCC-4528
    Join Date
    Jul 2003
    Location
    Indiana
    Posts
    6

    Default Speedo pinion gear keeps wearing out.

    I own a 1972 240Z, and the speedometer did not work when I first bought it. I ordered a new pinion gear because the nylon cog was worn out on the first one. Well, after only about 350 miles, this one is worn out too and my speedometer does not work. It just abruptly stopped working one morning. Does anyone know what could be causing it to wear out the cogs so fast, and where to buy one? The one I ordered was from Courtesy Nissan, and it took about 2 months to get it, and was pretty expensive to only work for a few hundred miles. Any help is appreciated.

  2. #2
    HLS30165540
    Member ID
    CZCC-1052
    Join Date
    Jan 2001
    Location
    Houma, Louisiana
    Age
    55
    Posts
    2,297

    Default

    I would venture to guess that either the allignment of the cog was off somehow. Or there is something binding, maybe the cable is kinked? Dunno.
    The 1973 240Z 165540 Slightly modified. L28, 5sp, cam, headers, MSD 6AL, power windows, power door locks, leather seats, custom this and custom that.

  3. #3
    Registered User
    Member ID
    CZCC-7934
    Join Date
    Feb 2005
    Age
    61
    Posts
    36

    Default Speedo Gear Issue

    Tom,
    One thing that you probably have already noted is that all these plastic gears are not the same color. For instance, you may have removed a red one and received a yellow one from the dealer. These differ in the degree of "cut" angle and or tooth size. That is to ensure that the speed reading that is picked-up at the tranny is accurate as there were several trannys produced in 4 and 5 speed. I am not exactly sure which color is compatible with yours, but this may be contributing to the failure. Also older cables either from salvage yards or even still lying around these dealerships (God bless them all) may have gotten waxy or stiff, and the gear simply spins the teeth off.

    Hope that's helpful-
    72' 240
    Last edited by 72' 240; 02-23-2005 at 01:56 PM.

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Bookmarks

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •