Re: Honda Helix CN250
Posted: Tue Sep 29, 2020 4:56 pm
Time to prepare the Helix for its visit to the transplant surgery (www.MattPopeMotorcycles.co.uk) for its dissection and fitting of replacement crankshaft together with other things including fitting new HAGON Shocks to the front and rear of the motorcycle......she’d stood on the lift ramp for a year and managed to drain most of her engine oil onto the lift platform - all from a single drip from its drain plug! Wow!
In preparation it’s engine was refilled with oil after refitting it’s drain plug, simples? Yes, but here it was found that some previous ham-fist ‘fixer’ had damaged the 12mm plug’s threads (through over-tightening) and drilled & re-tapped the orifice to14mm with the added complication of non-vertical (out of true) drilling leading to the aforementioned leak, at this point in time I’d ordered but not yet received a quantity of copper compression washers for the job so a flat copper washer was installed as a temporary measure knowing that the fresh oil would soon be drained in the forthcoming rebuild process, the bike was wheeled off the lift ramp back onto the concrete floor of the garage from where in a few days it would go to the repairers.
Removing the bike after just 4 days it was noticeable that a drip from the drain plug had already made its tell tale mark on the floor! By this time the ordered compression washers had arrived but too late for immediate installation so the appropriate washer was included in the bike’s ‘repair kit’ for later fitment to remedy the leakage once and for all.
Jim
In preparation it’s engine was refilled with oil after refitting it’s drain plug, simples? Yes, but here it was found that some previous ham-fist ‘fixer’ had damaged the 12mm plug’s threads (through over-tightening) and drilled & re-tapped the orifice to14mm with the added complication of non-vertical (out of true) drilling leading to the aforementioned leak, at this point in time I’d ordered but not yet received a quantity of copper compression washers for the job so a flat copper washer was installed as a temporary measure knowing that the fresh oil would soon be drained in the forthcoming rebuild process, the bike was wheeled off the lift ramp back onto the concrete floor of the garage from where in a few days it would go to the repairers.
Removing the bike after just 4 days it was noticeable that a drip from the drain plug had already made its tell tale mark on the floor! By this time the ordered compression washers had arrived but too late for immediate installation so the appropriate washer was included in the bike’s ‘repair kit’ for later fitment to remedy the leakage once and for all.
Jim



