Optima Opus 34 recalls

What is wrong

On certain transit vehicles and trolleys equipped with cummins isb-02 diesel engines built with emc controlled fuel lift pumps. Erratic voltage supply to the fuel lift pump causes premature electric brush wear internal to the fuel lift pump. This premature wear could result in fuel lift pump failure and in some cases may cause an engine stall condition.

Risk

Should the engine stall, a vehicle crash could occur.

Remedy

Cummins, in conjunction with optima bus, will notify owners and repair the engines by emc recalibration and replacement of the fuel lift pump at no charge to the customer. Owners may contact cummins assistance center at 1-800-diesels or optima bus at 1‑316‑779‑7700.

Recall number 05V405000 · Recall details

What is wrong

On certain transit buses, there is a possibility that the hydraulic line coming from the radiator fan motor to the cac motor is rubbing on the chassis.

Risk

This rubbing may cause the hydraulic line to be rubbed through resulting in a leak and a loss of hydraulic fluid. This fluid could ignite if it comes in contact with a hot source.

Remedy

Dealers will install a p-clamp on the radiator motor support bracket that holds and secures the hose away from the chassis eliminating the possibility of chaffing. The recall began on august 24, 2005. Owners may contact optima at 1‑888‑391‑1777.

Recall number 05V358000 · Recall details

What is wrong

On certain transit buses with cummins isb02 engines, the hydraulic line coming off of the power steering pump is rubbing on top of the air governor.

Risk

This rubbing may cause the hydraulic line to be rubbed through resulting in a leak and a loss of hydraulic fluid. This fluid could ignite if it comes in contact with a hot source.

Remedy

Dealers will mail a modification kit with instructions on how to install a bracket and clamp that will lift and secure the lines away from the air governor eliminating the possibility of chaffing. The recall began on may 20, 2005. Owners may contact optima at 1‑888‑391‑1777.

Recall number 05V167000 · Recall details

What is wrong

On trolleys and transit coaches equipped with cummins isb diesel engines, the fuel lift pump could fail in a manner which results in engine fuel starvation, which could result in a stall condition. Potential lift pump failure modes include: brush wear out, bushing failure, rotor tab insert failure, or any other failure mode that would cause the fuel pumping element to stop spinning.

Risk

If the fuel lift pump pumping element stops spinning and the fuel pumping vanes stop in a location which blocks fuel flow through the lift pump, the engine will be starved of fuel. Fuel starvation could cause low engine power, engine misfire, or engine stall. Prior to the engine stalling, the operator could experience low engine power, engine misfire, and/or dash-mounted fault lamp illumination.

Remedy

Cummins is conducting the owner notification and remedy for this campaign. Owners may contact cummins at 1‑800‑343‑7357 or optima at 316‑779‑7700.

Recall number 05V110000 · Recall details

What is wrong

On certain transit buses equipped with arvinmeritor urresko tie rod clamps, heat treatment of clamps created a surface hardness that could lead to a fracture of the clamps.

Risk

In the event of a crack the clamps could break off affecting toe-in and alignment. The tie rod can come loose resulting in steering loss and a crash could occur without prior warning.

Remedy

Arvinmeritor is conducting the owner notification and remedy for this campaign. Owners may contact arvinmeritor at 1‑866‑668‑7221 or optima at 316‑779‑7700.

Recall number 05V029000 · Recall details