F 250 2WD Pickup V8-7.3L DSL (1990)
Propeller Shaft: Customer Interest
Drivetrain - Vibration/Moaning Noise
Article No.
91-8-26
04/17/91
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NOISE - "MOAN" FROM CAB FLOOR - CREW CAB MODELS WITH E40D TRANSMISSION
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VIBRATION IN CAB FLOOR AREA - CREW CAB MODELS WITH E40D TRANSMISSION
LIGHT TRUCK:
1989-90 F-350
ISSUE:
A "moaning" noise or floor vibration may be experienced in the 1500-1700 RPM range while in DRIVE or OVERDRIVE. This usually
occurs on a moderate "tip-in". This condition is caused by transmitted drivetrain vibrations.
ACTION:
Road test the truck to determine if a new driveshaft with a torsional damper is required. Refer to the following procedure for service details.
1. Drive the vehicle in both DRIVE and OVERDRIVE.
a. Operate the truck through the 1500-1700 RPM range.
b. Determine if the moan or vibration is from the cab floor.
c. If the moan/vibration is from the cab floor, proceed to Step # 2.
2. Install a driveshaft with a torsional damper. Refer to the 1989-90 F-Series Truck Shop Manual, Section 15-01, for service details.
NOTE: IF THE TRUCK IS A 4 X 2, ALSO REPLACE THE REAR AXLE COMPANION FLANGE (E7TZ-4851-A). INSTALL TWO (2) STRAP
RETAINERS AND FOUR (4) ALLEN HEAD SCREWS. TIGHTEN THE ALLEN SCREWS TO 25-40 LB.FT. (34-54 N-m).
PART NUMBER
PART NAME
CLASS
F1TZ-4602-AW
Driveshaft (4x4)
CG
F1TZ-4602-AY
Driveshaft (4x2)
CG
E7TZ-4851-A
Companion Flange
B
E4HZ-4A254-B
Strap Retainers (2 req.)
RM
390880-S100
Allen Head Screws (Pkg. of 4)
BS
OTHER APPLICABLE ARTICLES: None
WARRANTY STATUS: Eligible Under Basic Warranty
Coverage, Powertrain
Warranty Coverage
OPERATION DESCRIPTION
TIME
910826A
Install Driveshaft - 4 X 4
0.5 Hr.
910826B
Install Driveshaft - 4 X 2
1.0 Hr.
910826C
Additional Time If Required
0.2 Hr.
To Replace Collapsable Spacer - 4 X 2
DEALER CODING
BASIC PART NO.
CONDITION CODE
4602
67
OASIS CODES:
702000, 703000
