Help: 5th gear cannot engage after transmission oil change

Discussion in 'Honda N-Series' started by naboil, Wednesday 10th Jul, 2019.

  1. naboil New Member Getting Started

    I replaced tranmission oil on my FR-V .2 I-CDTI and in the process removed the wrong bolt (12mm) instead of 10mm oil level bolt.
    The bolt I removed had at the end a spring letting me thing it was retaining a ball.
    I put iit back and complete the transmssion oil change, bt the 5th gear wo't go in with engine stopped.

    I guess this has to do with my removal of the wrong bolt.

    My questions are:
    Can the engine be started and the car run without any damage to the gearbox ?
    How to fix the pb: does the tanny needs to be removed and opened?

    Many thanks for you help!
  2. SayamaAccord Club Veteran ★ ★ ★ ★ ★

    United Kingdom Cliff County Durham
    I'm not expert but it looks from this like it could need the gearbox off to fix it - unless you can do without 5th. Unless maybe you can just buy a new ball and put it back in.
    If so you might as well replace the clutch at the same time.
  3. naboil New Member Getting Started

    Thanks for the reply.
    Below some follow up on the issue.
    It turns out, taking out the wrong bolt had no consequence as the ball did not fall out of its cavity.
    The false perception I had tat the 5th gear won't go in with engine stopped was probably due to mishandling of the shift gear.
    everything is in order and the car has been extensively test-driven since.

    So conclusion is, be extremely careful when replacing gearbox oil, and follow closely manual and/or specialised forum guidelines.
    The level bolt is a small bolt (10mm wrench) just over and on the right of the gearbox drain bolt.