F 350 2WD Pickup V8-7.3L DSL (1988)
Power Take-Off: Technical Service Bulletins
Transfer Case/PTO - Lubrication Requirements
TRANSFER CASE-LUBRICATION REQUIREMENTS FOR VEHICLES EQUIPPED "DANA" POWER TAKE-OFF (PTO) UNITS
Article No. 89-6-19
LIGHT TRUCK:
1987-89 F-350
ISSUE:
Warner 356 transfer case assemblies with "Dana" P.T.O. units require 4.8 quarts more oil (Dexron II ATF) than transfer cases without
P.T.O's. Transfer cases equipped with P.T.O's that are operated under a continuous load in excess of 11 minutes may exhibit failures due to
a low fill.
ACTION:
When servicing transfer cases that have P.T.O's, refill the transfer case as described in the following service procedure.
FIGURE 1
NOTE:
SOME TRANSFER CASES HAVE A FILL PLUG LABELED "FOR P.T.O. FILL ONLY" ON THE FRONT OF THE CASE, FIGURE 1.
NOTE:
CUSTOMERS SHOULD BE GIVEN A COPY OF THIS INFORMATION FOR FUTURE REFERENCE.
1.
Locate the fill plug on the front of the transfer case labeled "FOR P.T.O. FILL ONLY", Figure 1. Fill oil to the level of this fill hole. If this fill
hole does not exist, proceed to Step 2.
NOTE:
THE UPPERMOST CAPSCREW ON THE OUTPUT SHAFT BEARING COVER OF THE P.T.O. SHOULD BE USED TO CHECK THE
OIL LEVEL.
FIGURE 2
2.
Remove the uppermost capscrew ("A") on the output shaft bearing cover of the P.T.O., Figure 2.