F 350 4WD Pickup V8-351 5.8L VIN G 2-bbl (1985)
Differential Case: All Technical Service Bulletins
Axle - Rear Axle Hub Seals Leak
Article No. 86-22-23
AXLE (10.25") - REAR - HUB SEALS LEAK - VENT PLUGGED
LIGHT TRUCK 1985-86 F-250/350
A plugged rear axle vent may cause water to be sucked in through the seals and grease to be pushed out. This happens when pressures rise and fall inside
the axle during various driving conditions and temperatures. The purpose of the vent is to relieve those pressures. If the vent is plugged with mud or
other foreign materials, the axle cannot "breathe".
To eliminate this concern, perform the following procedure:
Figure 17
1.
Remove the vent from the axle (Figure 17).
2.
Place the vent in a vise so as not to damage the threads.
3.
Drill out the vent using a 3/16 inch drill bit. Clean all shavings from vent.
4.
Install vent.
5.
Make sure entire vent hose is clear of dirt and mud, etc.
6.
Install hose.
OTHER APPLICABLE ARTICLES: None
WARRANTY STATUS: Reimbursable within the provisions of the Warranty and Policy Manual.
OPERATION: SP4022A86
TIME:
0.5 Hr. DLR. CODING: Basic Part No. 4022 - Code: 55
