94 MR cabover speedo

[HeavyHaulinMac]

I have a 1994 MR 690S cabover with a T2060 trans.

 

The tach has intermittent fault where it does not read correctly but still reads low rpm, about 400-600 rpm max. Sometimes it reads properly.

 

Tach has one of those magnetic pickups on the rear engine flywheel, which I replaced with new. Adjustment could be off... what I did was screw in until I hit the flywheel and backed off 180 degrees, then tightened lock nut. Still intermittent fault.

 

Any ideas on where the problem could be? Wiring? Gauge? Adjustment?

 

Any help is greatly appreciated

 

Edited post, talking tach not speedo

 

Sent from my SM-G892A using Tapatalk

 

 

 

 

 

 

[terry]

22 minutes ago, HeavyHaulinMac said:

 

I have a 1994 MR 690S cabover with a T2060 trans.

 

The speedo has intermittent fault where it does not read correctly but still reads low rpm, about 400-600 rpm max. Sometimes it reads properly.

 

Speedo has one of those magnetic pickups on the rear engine flywheel, which I replaced with new. Adjustment could be off... what I did was screw in until I hit the flywheel and backed off 180 degrees, then tightened lock nut. Still intermittent fault.

 

Any ideas on where the problem could be? Wiring? Gauge? Adjustment?

 

Any help is greatly appreciated

 

Sent from my SM-G892A using Tapatalk

 

 

 

I believe the speedometer pick up is on the trans. tailshaft.   terry

[HeavyHaulinMac]

My bad my bad, talking about tachometer not speedo. Ive been up too long to ask questions.

Sent from my SM-G892A using Tapatalk