Oil Pump, 2ND Brake and 2ND Coast Brake Inspection
Oil Pump, 2nd Brake and 2nd Coast Brake InspectionReference: Oil Pump, 2nd Coast Brake and 2nd Brake Disassembly and Reassembly
1. Check body clearance of driven gear (1).
Push driven gear (2) to one side of oil pump body (3). Using a feeler gauge, measure clearance between driven gear (2) and body (3). If clearance exceeds standard value, replace oil pump assembly.
Clearance between driven gear and body
Standard: 0.075 - 0.15 mm (0.00295 - 0.0059 inch)
Limit: 0.20 mm (0.0079 inch)
2. Check tip clearance of both drive and driven gears.
Measure radial clearance between gear tooth tip and crescent (1). If clearance exceeds standard value, replace oil pump assembly.
Clearance between drive gear and crescent
Standard: 0.004 - 0.248 mm (0.0001 - 0.010 inch)
Limit: 0.298 mm (0.0117 inch)
3. Check side clearance of both gears.
Using a straightedge (1) and a feeler gauge, measure side clearance between gears and pump body.
If clearance exceeds standard value, replace oil pump assembly.
Side clearance between gears and oil pump body
Standard: 0.03 - 0.05 mm (0.001 - 0.002 inch)
4. Measure inside diameter of oil pump body bushing, using special tools.
If inside diameter exceeds limit, replace oil pump body.
Oil pump body bushing inside diameter limit: 38.18 mm (1.503 inch)
Special Tool
(A): 09900-20607
(B): 09900-22403
NOTE: Perform measurement at several points.
5. Measure inside diameter of starter shaft bushing, using special tools.
If inside diameter exceeds limit, replace starter shaft.
Starter shaft bushing inside diameter limit: 21.57 mm (0.849 inch)
Special Tool
(A): 09900-20607
(B): 09900-22403
NOTE: Perform measurement at several points.
6. Check that sliding surface of friction, separator and cushion plates are not worn or burnt. If necessary, replace.
NOTE:
^ If friction plate lining is exfoliated, discolored or worn hardly, replace all friction plates.
^ Before assembling new friction plates, soak them in A/T fluid for at least two hours.
7. Measure height of 2nd brake return spring and 2nd coast brake return spring. If necessary, replace.
2nd brake return spring height
Standard: 25.17 mm (0.99 inch)
2nd coast brake return spring height
Standard: 14.47 mm (0.57 inch)
NOTE: Do not apply excessive force when measuring spring height. Perform measurement at several points.
