ATF Pump Inspection

Install the ATF pump drive gear (A), driven gear (B), and ATF pump driven gear shaft (C) in the main valve body (D). Lubricate all parts with ATF, and install the ATF pump driven gear with its grooved and chamfered side facing up.

Fig 1: Installing ATF Pump Drive Gear (A), Driven Gear (B) And ATF Pump Driven Gear Shaft (C) In Main Valve Body
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Measure the side clearance of the ATF pump drive gear (A) and driven gear (B).
ATF Pump Gears Side (Radial) Clearance:

Standard (New):

ATF Pump Drive Gear

0.210-0.265 mm (0.0083-0.00104 in.)

ATF Pump Driven Gear

0.070-0.125 mm (0.0028-0.0050 in.)

Fig 2: Measuring Side Clearance Of ATF Pump Drive Gear (A) And Driven Gear (B)
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Remove the ATF pump driven gear shaft. Measure the thrust clearance between the ATF pump driven gear (A) and the valve body (B) with a straight edge (C) and a feeler gauge (D).
ATF Pump Drive/Driven Gear Thrust (Axial)

Clearance:

Standard (New): 0.03-0.06 mm (0.001-0.002 in.)

Service Limit: 0.07 mm (0.003 in.)

Fig 3: Identifying ATF Pump Driven Gear (A), Valve Body (B), Straight Edge (C) And Feeler Gauge (D)
Courtesy of AMERICAN HONDA MOTOR CO., INC.