Service Manual

Reassembly
Check all mating surfaces. Replace any parts that have
scr
atches or burrs that could cause leakage. Clean all
metal parts in clean solvent. Blow dry with air. Do not
wipe dry with cloth or paper towel because lint or other
matter can get into the hydraulic system and cause
damage. Do not use a coarse grit or try to file or grind
these parts.
NOTE: Lubricate all seals with clean petroleum jelly
suc
h as Vaseline.
Do not use excessive lubricant on seals for meter
sec
tion.
Refer to parts listings covering your steering control unit
when ordering replacement parts. A good service policy
is to replace all old seals with new seals.
Control End Reassembly
1. Use a needle nose pliers to lower check ball retainer
into check valve hole of housing. Make sure retainer is
straight (not tilted on edge) in housing.
2 Install check ball in housing.
3 Lubricate 5/8" diameter seal and 7/16" diameter seal.
Install seals on check ball seat as shown
4. Lubricate check ball seat and seals thoroughly before
installing seat in housing. When installing seat do not
twist or damage seals. Install check ball seat in housing,
insert open end of seat first. Push check ball seat to
shoulder of hole.
5. Install set screw
. Use a 1/4" allen wrench to torque
set screw to 100 inch pounds. To prevent interference,
make sure top of set screw is slightly below housing
mounting surface.
6. Assemble spool and sleeve carefully so that the
spr
ing slots line up at the same end. Rotate spool while
sliding parts together. Some spool and sleeve sets have
identification marks, align these marks as shown. Test
for free rotation. Spool should rotate smoothly in sleeve
with finger tip force applied at splined end.
Figure 54
Figure 55
Repairs Page 4 - 66 Greensmaster
®
3100