驚愕 新品バルブスプリング折れ騒動
- 「･122」AMAZON健康維持大作戦
- by suna
- 2010/02/26 金 11:39
昨日、小春日和の中、「気持ち良く」エンジンオーバーホール後の「手掛けワックス」を入念に行い、「しっかりエンジン暖気をして」ガレージへ、、、と、アイドリング中に「カン、！！」と異音がして、エンジンがストップ。すかさず水温計を見ると、７０℃。直感で、エンジン内の部品が壊れたと判断。「まさか」の出来事で、一瞬、頭が真っ白になったものの、以後は、一切エンジンを回さず、ＪＡＦのレッカーを呼んで、工場へ搬送しました。工場で、プラグを抜いて各シリンダーの圧縮を計ると、なんと、３番ピストンが圧縮無し！！！。エンジンヘッドカバーを外してみると、３番の吸気（インテーク）バルブスプリングが、真ん中あたりで、ポッキリと折れてブラブラになっていました。ピストン・ヘッドを傷めていることが頭をかすめ、すぐにチェックをしたところ、幸いにも構造上からも、接触していないようで一安心。アイドリング中に折れたのが、不幸中の幸いでした。走行中に折れていたら、、、と思うとゾッとします。さらに、幸運がかさなり、一昨日にエンジンオーバーホールが終了し、旧いエンジン部品などを処分すべく、工場のゴミ箱に捨ててあったバルブスプリングが、午後のゴミ収集直前だったことで、間一髪で回収に成功。これまた不幸中の幸い、、、でした。早速、ヘッドカバーを外した状態で、エンジン上部からバルブスプリングを交換。折れたバルブスプリングは、スウェーデンのＣＶＩから購入した８本の中の１本なのですが、オーバーホール組み付け後、「たった」２１Ｋｍしか走らずに折れてしまったということは、部品の欠陥しか考えられません。早々に、ＣＶＩに写真を添付してクレームを出そうと思っています。それにしても、他の７本は大丈夫なのか？製造ロットの関係もあるでしょうが、とても心配です。差し当たって、３番のインテークバルブスプリングのみ、今まで使っていた旧いスプリングを取り付けましたが、疲労度やバネ強度の違いもあるでしょうし、どの道、再びＣＶＩから取り寄せる新品に交換するつもりですが、それさえも信用出来なくなってしまいました。現況、オイルもすべて交換し、オイル内の金属片も詳細にチェックしたところ異常なく、再び元気にエンジンは回ってくれていますが、当面、無理はせずに様子を見ながら新しいバルブスプリングが届くのを待つことにします。「一難去れば、また一難、、」ＡＭＡＺＯＮは、いろいろ気をもませてくれます。
Yesterday, under balmy weahter, I was working on the last touches of priming up my .122 with its overhauled engine by waxing the car with my hands again. In order to bring the car back into my garage, I put turned on the engine to warm it up when suddenly there was this big "clang" sound and the engine stopped. I rushed to look at the temperature which showed 70C and I immediately guessed that something had happened to the engine. I called a wrecker and called a JAF truck to haul the car to the workshop again. At the garage, the engine plugs were taken out and pressure on the cylinder was checked. There was no pressure on piston #3! When we took off the engine head cover, the valve spring on the intake side of the piston #3 was hanging broken in two. It was very fortunate that it broke while the car was idling. My luck was still holding. When I got to the workshop, I found that they had not yet disposed of my old springs as I had just taken the car home the day before. The broken spring was one of 8 I have bought from CVI in Sweden and was a genuine Volvo part. I had only driven 21km after the replacement so I believe the part was faulty. I am planning to communicate this to CVI. This has gotten me really worried about the other 7 springs. Normally, these parts are made in one lot and if one is bad, the others can also be faulty. Right now, only one spring is old. The other are new so the spring strength is different between the new 7 and old one. I had the oil changed and checked for metal parts in the oil but found nothing. The engine is running without any problems.
Yesterday, under balmy weahter, I was working on the last touches of priming up my .122 with its overhauled engine by waxing the car with my hands again. In order to bring the car back into my garage, I put turned on the engine to warm it up when suddenly there was this big "clang" sound and the engine stopped. I rushed to look at the temperature which showed 70C and I immediately guessed that something had happened to the engine. I called a wrecker and called a JAF truck to haul the car to the workshop again. At the garage, the engine plugs were taken out and pressure on the cylinder was checked. There was no pressure on piston #3! When we took off the engine head cover, the valve spring on the intake side of the piston #3 was hanging broken in two. It was very fortunate that it broke while the car was idling. My luck was still holding. When I got to the workshop, I found that they had not yet disposed of my old springs as I had just taken the car home the day before. The broken spring was one of 8 I have bought from CVI in Sweden and was a genuine Volvo part. I had only driven 21km after the replacement so I believe the part was faulty. I am planning to communicate this to CVI. This has gotten me really worried about the other 7 springs. Normally, these parts are made in one lot and if one is bad, the others can also be faulty. Right now, only one spring is old. The other are new so the spring strength is different between the new 7 and old one. I had the oil changed and checked for metal parts in the oil but found nothing. The engine is running without any problems.
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