E 250 Van V8-7.3L DSL (1988)
Subframe: All Technical Service Bulletins
Driveline - Vibration Cross Member Cracks
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VIBRATION - DRIVELINE - VEHICLES WITH C6 TRANSMISSION
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DRIVELINE - VIBRATION - VEHICLES WITH C6 TRANSMISSION
Article No. 90-23-17
LIGHT TRUCK:
1987-88 E-350
ISSUE:
A driveline vibration may be caused by a crack in the crossmember between the transmission mounting bolts. This may occur on high
GVW applications and trucks making multiple stops and starts.
ACTION:
Install a new # 2 transmission cross member if any cracks are found during the inspection. Refer to the following procedure for service
details. If no cracks are found, refer to the NVH diagnostics in the 1987-88 Light Truck Shop Manual, Volume A, Section 18-01 for
corrective action.
Figure 1
1.
Remove and throw away the cracked transmission cross member. Refer to the 1987-88 Light Truck Shop Manual, Volume A, Section 17-01 for
removal procedure.
2.
Inspect the transmission insulator for damage.
a.
If any damage is detected, replace the transmission insulator. Clean the threads with Ford Spot & Stain Remover (B7A-19521-AA).
b.
If the transmission insulator is not damaged, clean the bolt threads with a wire brush and Ford Spot & Stain Remover (B7A-19521-AA).
3.
Replace the insulator nuts and washers with new ones (N621945-S2).
4.
Throw away the cross member to frame bolts and nuts. Replace them with new ones.
5.
Apply Threadlocker 262 to all fasteners (Cross member-to-frame and cross member-to-insulator nut). Be sure that all fastener surfaces are cleaned
with Ford Spot & Stain Remover (B7A-19521-AA).
6.
Loosely install the new # 2 transmission cross member (E8UZ-6A023-A) to the frame side rails.
