Tip Clearance

WARNING: This page is about a different car, the 2016 Jeep Wrangler and 2015 Jeep Wrangler. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Oil Pump Tip Clearance

Courtesy of CHRYSLER GROUP, LLC

1 - MEASURE 37 MM FROM THE CORNER OF CRESCENT

2 - TIGHT MESH HERE

3 - MEASURE TIP CLEARANCE HERE

Tip clearance is the difference between the tip diameters of the gear teeth and the corresponding diameters of the pocket in the pump housing.

Tip clearance for the inner gear can be checked by moving the inner gear into tight mesh (2) (Fig 1) with the outer gear as shown in illustration. Clearance between the ID of the crescent feature of the housing and the OD of the teeth of the inner gear (3) should then be measured at a point 37 mm (1.45 in.) from the corner of the crescent (1) feature, as shown in measurement below.

Acceptable tip clearance for inner gear:

0.85 mm (0.033 in) max