engine balancer shaft

derwen1959 · Mar 27, 2016

can someone explain why a Leyland 272 tractor engine is fitted with a balancer shaft and the same engine was used in JCB excavators but no balancer shaft fitted

Janicholson · Mar 27, 2016

Balance shafts can be used to prevent internal harmonics that destroy lower end structures, or to prevent vibration transferred to operators. The tractor chassis might be much lighter and thus prone to let the operator get vibrational buzz, compared to the excavator. Jim

richardinnz · Mar 28, 2016

It is either an older 3.8TD engine, older Nuffield tractors did not have the balancer but were used as skidded units by Bamfords for their backhoe/loaders, or it is a 4.98NT which is what your 272 should have, but mounted on rubber engine mounts, the 4.98NV engine which is the road version of the same engine used in some of the small Leyland and Austin FG lorrys did not have the balancer, I had one of those motors in a Land Rover years ago, real slow even with a Fairy overdrive but it would go almost anywhere in top gear, after chewing out it's gearbox, along with major rust in the bulkhead, the Land Rover was scrapped. the engine ended up in a JCB 3CII, but the engine that came out had the balancer.

engine balancer shaft

derwen1959

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Janicholson

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richardinnz

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