TRUCK SERVICE MANUAL
CLEANING, INSPECTION AND REPAIR
Cleanliness is of utmost importance. Use clean
solvent to wash grease, oil or dirt from all metal parts.
Clean machined parts individually to avoid damage due
to "bumping" togPther of parts. Use lint-free cloths
dipped in a clean solvent to clean all machined surfaces.
After all parts are cleaned, dry parts with compressed air.
A careful visual inspection of the steering gear
parts is very important. Inspect components for burrs or
nicks, especially on or near the rack (teeth) on the piston.
If a raised burr is found on the piston, it should
be removed with a fine hand stone. All 0rings, seals and
gaskets should be replaced Inspect the output shaft
bushings for wear.
1. Install new bushings (if removed) in the gear
housing and cover, using a press and a straight
line pushing action. The bushing is pushed into
the gear housing, so that the inside face of
bushing is flush with inside face of gear housing,
When a new bushing is pressed into the cover,
the face of the bushing must be flush with the cover, Fig.
24. When reinstalling bushing in output shaft bore of
housing, if it goes in easily and heavy press resistance is
not encountered, carefully remove bushing. Thoroughly
clean bushing of oil and grease and clean bore of foreign
material by scraping with a piece of brass sheet. Bushing
3. Position the relief valve spring and one relief
and bore should then be completely washed and dried.
valve ball into the valve bore. Then using a 3/16"
Coat exterior of bore and bushing with Loc-tite high
Allen wrench, install one of the valve seats. The
strength retainer compound. Reinstall bushing and allow
valve seats must be tight and flush with or
a minimum of six hours curing time. When the curing
slightly below the end surface of the piston.
time has elapsed, any excess Loc-tite in quad ring
groove or elsewhere should be -removed by washing
4. Install the second relief valve ball seat in the
2. Install a new quad ring in the groove in the gear
5. Position one of the reversing springs in bottom of
valve bore. Be sure spring is centered. The end
of the valve must enter the inside diameter of the
6. Install the valve positioning pin in the piston. Turn
pin inward with a screwdriver until it is below the
outside surface of the piston. The flats must
enter into the piston 1/4" to engage the mating
slot in the valve.