Recalls for your 1974 Mack Mb

Recalls for 1974 Mack Mb

RSS Feed


4 recalls found.
All Mack Recalls
Panhandle Fire Co. Mack MB/Minotaur Brute Engine 76

Trackside Gorilla posted a photo:

Panhandle Fire Co. Mack MB/Minotaur Brute Engine 76

Panhandle District, Prince Street Station, Kucamonga City. E-76 a rebuilt 1970 Mack MB rests outside the station while E-42 (under 76's bumper) rolls out of the bay. 76 is one of 10 active Mack MB's on the fleet.

DEFECT #1 - SERVICE BRAKES, AIR:ANTILOCK:CONTROL UNIT/MODULE


Posted on: 1979-10-12
Description
An axle no brake condition could result from an eaton controller internal electrical malfunction.  This condition may cause the anti-wheel lock valve solenoid to be continuously energized and prevent the brakes from being applied on one of the axles.  As a result, the anti-wheel lock warning lamp is not activated.

Consequence


Corrective Action
The dealer will inspect and, if necessary, replace the anti-wheel lock controller without charge to owner.

Notes
Vehicle description: trucks equipped with eaton 21 anti-lock controllers.system: service brakes; anti-wheel lock solenoid.consequences of defect: loss of brakes on any one axle will result in extendedvehicle stopping distances, which could lead to a vehicle accident.

DEFECT #2 - STEERING:LINKAGES:KNUCKLE:SPINDLE:ARM


Posted on: 1979-10-12
Description
Deficiencies, in the form of forging laps, cracks and excessive decarburization during heat treatment, exist in the steering knuckles.  Stresses imposed with integral hydraulic power steering may lead to a failure in the area of the steering arm attaching boss.  This type of failure would cause loss of steering control.

Consequence


Corrective Action
Dealer will inspect and, if necessary, replace the left steering knuckle with an improved type of knuckle.

Notes
Vehicle description: truck tractors.system: steering; steering knuckle.consequences of defect: loss of steering control could cause a vehicleaccident.

DEFECT #3 - STEERING:LINKAGES:KNUCKLE:SPINDLE:ARM


Posted on: 1979-10-12
Description
The existing cross steering arms may have insufficient fatigue life in the neck area.  This is near the boss for the cross steering tube ball joint connection.  Failure of either of the cross steering levers could lead to loss of steering control of the right front wheel.

Consequence


Corrective Action
The dealer will inspect and, if necessary, install cross steering arms of improved design and greater strength.

Notes
Vehicle description: truck tractors.system: steering; steering arm.consequences of defect: loss of steering control could lead to loss of vehiclecontrol and an accident.

DEFECT #4 - STRUCTURE


Posted on: 1979-10-12
Description


Consequence


Corrective Action


Notes
Mack truck campaign no sco#50.fire apparatus equipped with cab lift cylinder.possibility that the velocity fuse in the cab hydraulic lift cylinder mayfail.this fuse is incorporated in the lift cylinder to prevent the cabfalling unchecked in the event of certain failures, such as a broken hydraulicfluid hose.(correct by inspecting and replacing with new cylinder wherenecessary).