K 2500 Truck 4WD V8-454 7.4L (1988)
FIGURE 2
SERVICE PROCEDURE
1.
Drain crankcase.
2.
Remove oil filter.
3.
Disconnect oil cooler pipes at pipe bracket (attached to engine mount).
4.
Disconnect oil cooler pipes from adapter and drain.
5.
Remove oil cooler adapter (retain attaching bolts and plugs), see Figure 1.
6.
Inspect the adapter to determine which condition exists. Part should be cleaned prior to inspection.
CONDITION A - Oil Cooler Bypass Using a straight round shaft (not to exceed 5/16" dia.), insert it into oil filter mounting boss hole, see Figure
2.
Mark shaft and measure depth of hole. Depth of hole should not exceed 2". If it does, condition "A" exists.
CONDITION B - Oil Filter Bypass Using a "bright" light such as a penlight, etc. shine it into passage indicated in Figure 2. Rotate adapter and look
down into second passage indicated in Figure 2 and check for the presence of light at the bottom of hole. If light is present, condition "B" exists.
For CONDITION C - Neither of the above exists.
7.
Install new adapter (P/N 14092393) using new seals (P/N 14092399 and 14015353), see Figure 1. Install retaining bolts and torque to 18-25 N-m
(15-18 ft.lbs.). Install plugs using sealer (P/N 1052080) and torque plugs to 14-20 N-m (11-15 ft.lbs.)
