1991 Oshkosh S Series
Safety record from NHTSA: recalls, owner complaints, investigations and service bulletins.
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Vehicles › Oshkosh › S Series › 1991
These records cover every 1991 Oshkosh S Series. To see whether one car still needs a recall repair, decode its VIN or check it with NHTSA.
Recalls
2 recalls name the 1991 Oshkosh S Series. Newest first.
The stainless steel fasteners for the cab entry steps and grab handles can crack and break.
Risk and remedy
Risk
The steps and grab handles can separate from the truckbody under load from cab occupants entering or exiting the cab, which couldresult in an injury to users.
Remedy
Replace the step and grab handle stainless steel fasteners with grade 5 zinc and yellow coated fasteners. Oshkosh will send the replacement fasteners to owners with the notification letters. Owners will be requested to replace the fasteners on their vehicles, and will be reimbursed for the labor to perform the repair.
The rear tandem axle brakes do not meet the service brake application time requirements of fmvss 121.
Risk and remedy
Risk
Failure to meet standards of fmvss 121 increases brakingdistance and increases the possibility of an accident.
Remedy
The O.625 inch nylon air tubing between the chassis air manifold and the tandem service relay will be replaced with .75 inch nylon tubing, which will allow brake system to meet the service brake application time requirements of fmvss 121.
Service bulletins
Technical service bulletins and other communications the manufacturer sent dealers about this vehicle. Ask a dealer for the full document by its number.
- 10244977This bulletin provides instruction for installing a hydraulic system charge pump filter.
- 10240400This bulletin provides information on updating hydraulic hose clamping below the cab to match current production. Engineering recommends changing out the front STAUFF clamp using the following procedure. The second STAUFF clamp can be changed out using this procedure if desired.
- 10198993This bulletin provides information for vehicle owners that have a Dana series 172 or 175 rear axle without a lubricant drain plug in the bottom of the axle housing.
- 10198992This bulletin provides instruction for replacing the mixer pump PTO shaft, mixer pump input yoke, and mixer pump input yoke bearing U-bolts to the current production configuration. The new PTO shaft is larger with greaseable crosses and requires a new mixer pump input yoke and replacing the input yoke bearing U-bolts with bearing straps.
- 10198991This bulletin provides instructions for bolting the water tank mounting feet to the water tank if the bonded feet become loose.
- 10198990This bulletin provides instruction for replacing the water pump impeller due to corrosion. Oshkosh has received reports of non-working water pumps due to the pump impeller becoming corroded and seized, causing the pump not to spin. A new impeller made of an improved alloy was developed to eliminate corrosion issues.
- 10194921This bulletin provides instruction for checking electrical connections at various critical locations. Loose electrical connections can cause false readings and lead to electrical system errors.
- 10194920This bulletin provides instruction on replacing the frame ground stud nut located at the rear of the vehicle on the inside right-hand frame rail. Engineering has changed the nut from a jam nut to a lock nut after receiving reports of the jam nut being loose when inspected.
Every Oshkosh S Series model year
Bars are owner complaints, dots mark years with recalls. Select a year to open its report.