7-S15
L4400 , WSM
STEERING
[3] SERVICING
(1) Hydraulic Pump (Power Steering
Housing Bore (Depth of Scratch)
1. Check for the scratch on the interior surface of the housing
caused by the gear.
2. If the scratch reaches more than half the area of the interior
surface of the housing, replace at pump assembly.
3. Measure the housing I.D. where the interior surface is not
scratched, and measure the housing I.D. where the interior
surface is scratched.
4. If the values obtained in the two determinations differ by more
than the allowable limit, replace the hydraulic pump as a unit.
(Reference)
• Use a cylinder gauge to measure the housing I.D.
W1014451
Cliarance between Bushing and Gear Shaft
1. Measure the gear shaft O.D. with and outside micrometer.
2. Measure the bushing I.D. with and inside micrometer or cylinder
gauge, and calculate the clearance.
3. If the clearance exceeds the allowable limit, replace the gear
shaft and the bushings as a unit.
W1258963
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.
W1022126
Depth of scratch
Allowable limit
0.09 mm
0.0035 in.
Clearance between
bushing and gear shaft
Factory spec.
0.020 to 0.081 mm
0.0008 to 0.0032 in.
Allowable limit
0.15 mm
0.0059 in.
TighteGear shaft O.D.
Factory spec.
14.970 to 14.980 mm
0.5894 to 0.5898 in.
Bushing I.D.
Factory spec.
15.000 to 15.051 mm
0.5906 to 0.5926 in.
Side plate thickness
Factory spec.
2.48 to 2.50 mm
0.0976 to 0.0984 in.
Allowable limit
2.40 mm
0.0945 in.
KiSC issued 07, 2007 A
Tractor Manuals Scotland - Please Do Not Copy
Tractor Manuals Scotland
