BUCKET AS-GENERAL PURPOSE 2795368 - Caterpillar

Location of components in 9Y-3300 Prelube Pump Oil Lines Group. 2W-6317 Elbow (1). Jam Nut (2). 067-9921 Tee (3). Tube Nut (4). Oil Pump (A). Oil Pan (B). Prelube Pump (C).When the jam nut (2) can not be tightened, a customer may be tempted to back the tee (3) out of the elbow until the jam nut can be tightened. This can cause the O-ring seal to try to seal against the tee's threads instead of the intended smooth undercut. The result can be an oil leak. Additional tightening of the jam nut will not stop the oil leak and may result in stripped threads in the elbow or on the tee.
If an oil leak is present where the tee (3) screws into the elbow (1), count the exposed threads on the tee that are between the jam nut (2) and the body of the tee. Normally, if the tee is correctly tightened, there should be .5 to 1.5 threads exposed. If there is more than 2 threads exposed, check to be sure the tee is correctly installed. To check for correct installation do the procedure that follows:
1. Loosen tube nuts (4) and remove the tube or tubes that are connected to tee (3).2. Loosen jam nut (2).3. Screw tee (3) all the way into elbow (1).4. Unscrew tee (3) just far enough to align the tee with the tube or tubes to be connected to the tee.5. Install and tighten tube nuts (4) that connect the tube or tubes to tee (3).6. Use a "thin" wrench to tighten jam nut (2). A "thin" wrench can be made by removing approximately 2.0 mm (.08 in) from each side of a "standard" wrench.