specequip;
The forktruck is a 36 Volt, 4000 lb lift capacity Clark that was produced in Apr 1985 with GE EV100 oscillating speed controller and 24 Volt traction control power relays. It also had a Sevcon accelerator speed controller. The wiring diagram is IN-24012. The first item to check would be your truck's battery along with the electrical cleanliness of the truck's chassis. If these items check out to be alright, then check your truck's speed controller capacitor's charge up rate and in addition see what the voltage split T2 to Positive is.