wsm B2420 - Servicing; Hydraulic Pump for Power Steering; Power Steering Controller Body

STEERING
B2420, WSM
7-S15
[4] SERVICING
(1) Hydraulic Pump for Power Steering
Clearance between Tip of Gear Tooth and Casing
1. Measure the clearance between gear and casing at several
points with feeler gauge.
2. If the clearance exceeds the allowable limit, replace the
hydraulic pump assembly.
9Y1210436STS0020US0
Clearance between Bushing and Shaft
1. Measure the gear shaft O.D. with an outside micrometer.
2. Measure the bushing I.D. with a cylinder gauge.
3. If the clearance exceeds the allowable limit, replace it.
9Y1210436STS0021US0
Side Plate Thickness
1. Measure the side plate thickness with an outside micrometer.
2. If the thickness is less than the allowable limit, replace it.
9Y1210436STS0022US0
(2) Power Steering Controller Body
Clearance between Steering Gear Box and Rack (Piston)
1. Measure the steering gear box cylinder I.D. with a cylinder
gauge.
2. Measure the rack (piston) O.D. with an outside micrometer, and
calculate this clearance.
3. If the clearance exceeds the allowable limit, replace the steering
gear box or rack (piston) assembly.
9Y1210436STS0023US0
Clearance between tip of
gear tooth and casing
Allowable limit
0.15 mm
0.0059 in.
Clearance between
busing and shaft
Factory specification
0.020 to 0.091 mm
0.00079 to 0.0035 in.
Allowable limit
0.12 mm
0.0047 in.
Gear shaft O.D. Factory specification
14.970 to 14.980 mm
0.58937 to 0.58976 in.
Bushing I.D. Factory specification
15.000 to 15.061 mm
0.59056 to 0.59295 in.
Side plate thickness
Factory specification
2.48 to 2.50 mm
0.0977 to 0.0984 in.
Allowable limit
2.40 mm
0.0945 in.
Clearance between
steering gear box and
rack (piston)
Factory specification
0.030 to 0.079 mm
0.0012 to 0.0031 in.
Allowable limit
0.14 mm
0.0055 in.
KiSC issued 06, 2012 A