Drops Alternator Modification kit

[martinsaunders06]

The last couple of years the Alternator on the drops has been a pain , no matter how tight the v-belt was etc it intermittently put the charge light on and belt squealed . At Xmas I fitted a complete new boxed Drops army modification kit from Daf bought from withams , in the kit it says it's a replacement for the obsolete original alternators , its a lot chunkier needing new brackets and also has new waterpump and alternator pulleys which take it from single to a double drive v-belt which is much better idea , extra wiring harness etc .

Everything works ok tho up until now I'd only driven it in the yard . Driving up the road the Engine Rev counter now reads really high to the actual engine speed -2000 rpm is showing like 2900rpm ?.

? Has anyone any experience of fitting this modification in service and come across this with the Rev counter , is there a solution that is extra to the modification kit like a different tacho interface relay or rev counter ? . . Any help is appreciated thanks . Martin

[martinsaunders06]

Sorted - bit of searching and there is a tiny screw under

tachometer interface top cover that trims or adjusts rev counter needle .

Martin

[john1950]

Good find, the new alternator must be higher speed than the old.